EP1445761A1 - Appareil et méthode pour le fonctionnement de systèmes assistés par la parole dans des véhicules automobiles - Google Patents

Appareil et méthode pour le fonctionnement de systèmes assistés par la parole dans des véhicules automobiles Download PDF

Info

Publication number
EP1445761A1
EP1445761A1 EP04000822A EP04000822A EP1445761A1 EP 1445761 A1 EP1445761 A1 EP 1445761A1 EP 04000822 A EP04000822 A EP 04000822A EP 04000822 A EP04000822 A EP 04000822A EP 1445761 A1 EP1445761 A1 EP 1445761A1
Authority
EP
European Patent Office
Prior art keywords
microphone
signal
power
generated
frequency
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP04000822A
Other languages
German (de)
English (en)
Other versions
EP1445761B1 (fr
Inventor
Brian Michael Finn
Shawn K. Steenhagen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Volkswagen AG
Original Assignee
Volkswagen AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Volkswagen AG filed Critical Volkswagen AG
Publication of EP1445761A1 publication Critical patent/EP1445761A1/fr
Application granted granted Critical
Publication of EP1445761B1 publication Critical patent/EP1445761B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0208—Noise filtering
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers
    • H04R3/02—Circuits for transducers for preventing acoustic reaction, i.e. acoustic oscillatory feedback
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/13—Acoustic transducers and sound field adaptation in vehicles
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers
    • H04R3/005—Circuits for transducers for combining the signals of two or more microphones

Definitions

  • the invention relates to a method and a device for the operation of voice-assisted systems, such as communication and / or voice / intercom devices in motor vehicles, in which a microphone arrangement Voice signals recorded and passed to at least one speaker become.
  • the invention is therefore based on the object, a method and a device of the generic type in such a way that the verbal Communication of the occupants of a vehicle is improved.
  • This object is achieved by a method according to claim 1 and a device solved according to claim 28.
  • This is to operate a voice-assisted Systems, such as a communication and / or voice / intercom in a motor vehicle, with at least one microphone and at least one speaker for reproducing a signal generated by means of the microphone as well as between the bandpass filter arranged on the microphone and loudspeaker depending on a comparison of the power of the microphone signal generated at an examination frequency with the power of the means of Microphone generated signal at least one substantially integer Multiples, ie a substantially harmonic, the examination frequency or depending on a comparison of the power of the microphone generated by the Signal at an examination frequency with the power of the microphone generated signal at the examination frequency at least one earlier Time set.
  • the examination frequency is one or more Frequencies of the signal generated by the microphone in question.
  • Embodiment of the invention is the frequency as the examination frequency selected, in which the power of the signal generated by the microphone in the substantial maximum.
  • several frequency components with large Services selected as examination frequencies.
  • the bandpass filter is both depending on a comparison of the power of the microphone generated by the Signal at the examination frequency with the power of the microphone generated signal at least a substantially integer multiple of the Examination frequency as well as depending on a comparison of the performance of the by means of the microphone generated signal at the examination frequency with the Power of the signal generated by the microphone at the examination frequency set at least at an earlier date.
  • the bandpass filter is so set it to the proportion of the signal generated by the microphone with a Locking frequency (only) locks when the power of the microphone generated signal at the examination frequency by more than an upper Limit is greater than the power of the signal generated by the microphone at the first harmonic of the examination frequency.
  • Blocking frequency in the sense of Invention may also be a frequency range and not just a single frequency.
  • the upper limit is between 20 and 40dB.
  • the upper limit is substantially 30dB.
  • the bandpass filter is so set it to the proportion of the signal generated by the microphone with the Locking frequency does not lock when the power of the microphone generated by the Signal at the examination frequency less than a lower limit is greater than the power of the signal generated by the microphone at the first Harmonics of the examination frequency.
  • the lower limit is the lower limit between 5 and 20dB.
  • the lower limit is substantially 12dB.
  • the bandpass filter is so adjusted that the proportion of the signal generated by the microphone in the Locking frequency locks if it is decided that the power of the means of the Microphone at the examination frequency increases exponentially.
  • the bandpass filter is so set it to the proportion of the signal generated by the microphone with the Locking frequency (only) locks when the power of the microphone generated signal at the examination frequency longer than a first response time is greater than a threshold, with the first response time more advantageous greater than essentially 750ms.
  • the minimum dead time is advantageously 200ms to 300ms.
  • the bandpass filter is so adjusted that it the proportion of the signal generated by the microphone at a Frequency range around the blocking frequency blocks if after expiration of a Repetition time, which is greater than the minimum dead time, the performance of the means of Microphone generated signal at the examination frequency by more than the upper Limit is greater than the power of the signal generated by the microphone at the substantially first harmonic of the examination frequency and / or when It is decided that the power of the signal generated by the microphone at the examination frequency increases exponentially.
  • the bandpass filter is so adjusted that it the proportion of the signal generated by the microphone at a enlarged frequency range around the blocking frequency blocks when after expiration of a Repetition time, which is greater than the minimum dead time, the performance of the means of Microphone generated signal at the examination frequency by more than the upper Limit is greater than the power of the signal generated by the microphone at the substantially first harmonic of the examination frequency and / or when It is decided that the power of the signal generated by the microphone at the examination frequency increases exponentially.
  • the aforementioned object is also achieved by a method according to claim 30 and a device according to claim 53 solved. It is used to operate a voice-assisted system, such as a communication and / or voice / intercom device in a motor vehicle, with at least one microphone and at least one speaker for playing a generated by means of the microphone Signal and one between the microphone and the speaker arranged Bandpass filter the power of the signal generated by the microphone at least three examination frequencies determined by evaluating the performance of the detected by the microphone signal at the examination frequencies is whether there is feedback, and the bandpass filter is set such that it is a part of the microphone that is around a cutoff frequency generated signal locks when it is determined that feedback exists.
  • a voice-assisted system such as a communication and / or voice / intercom device in a motor vehicle
  • Bandpass filter the power of the signal generated by the microphone at least three examination frequencies determined by evaluating the performance of the detected by the microphone signal at the examination frequencies is whether there is feedback, and the bandpass filter is set such that it is a part
  • Notch frequency in the sense of the invention (and thus also in the sense of all claims) the examination frequency at which the power of the microphone generated signal is maximum.
  • the examination frequency at which the power of the microphone generated signal is maximum is the Rejection frequency but the examination frequency added with a correction frequency, where the power of the signal generated by the microphone is maximum, i. to the examination frequency at which the power of the microphone generated by the Signal is maximum, a correction frequency is added.
  • This correction frequency is Advantageously, depending on the power of the generated by means of the microphone Signal at the examination frequency at which the power of the microphone generated signal is maximum, as well as the power of the microphone generated by the Signal at least one, especially immediately, next to this Examination frequency lying examination frequency formed.
  • fkorr 40Hz * (2-4) / (16+
  • ) -4.44Hz
  • the examination frequency at which the power of the signal generated by the microphone is maximum is thus 3840 Hz and the blocking frequency 3835.56 Hz.
  • the distances between at least part of the examination frequencies or all examination frequencies equidistant are provided.
  • Embodiment of the invention is a presence of Feedback only detected when the power of the microphone signal generated at the examination frequency at which the power of the means of the Microphone generated signal maximum is greater by more than an upper limit is the power of the signal generated by the microphone at the first Harmonics of this examination frequency, the upper limit advantageously between 20 and 40 dB, in particular at substantially 30 dB, lies.
  • a presence of Feedback then detected when the power of the microphone signal generated at the examination frequency at which the power of the means of the Microphone generated signal is maximum, at least approximately, exponentially increases.
  • a presence of Feedback then detected when the power of the microphone generated signal at least one examination frequency longer than a first Response time is greater than a threshold.
  • the first response time is advantageously greater than substantially 750ms.
  • the threshold can depending on the power of the signal S or on the sum of the powers of all Examination frequencies are selected.
  • a presence of Feedback then detected when the power of the microphone generated signal at least one examination frequency longer than a first Response time greater than the power of the signal generated by the microphone at every other examination frequency is.
  • the second response time is advantageously greater than essentially 750ms.
  • the setting of Bandpass filter repeated at the earliest after expiration of a minimum dead time the advantageously between 100ms to 300ms.
  • the performance of the means of Microphone generated signal at least 50, especially at 150 to 300, Examination frequencies determined.
  • the bandpass filter is a Notch filter or a filter bank with at least one notch filter.
  • the filter bank can e.g. Include 10 notch filters.
  • Fig. 1 shows the interior view of a motor vehicle 1 from above.
  • Reference numerals 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19 and 20 designate speakers.
  • Reference numerals 21, 22, 23 and 24 denote microphones.
  • the Speakers 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19 and 20 are included partly to a music system and partly to a communication or speech / intercom device. They can also be used by both systems.
  • the speakers 9, 17, 18, 19, 20 enter from the microphone 21 generated signal, the speakers 7, 17, 18, 19, 20 a of the Microphone 22 generated signal, the speakers 7, 9, 19, 20 a from the microphone 23rd generated signal and the speakers 7, 9, 17, 18 a generated by the microphone 24 Signal off.
  • the communication is in principle the better ever stronger a signal between one of the microphones 21, 22, 23, 24 and one of the Loudspeaker 7, 9, 17, 18, 19, 20 is amplified.
  • a bandpass filter 32 is provided. This filters a signal S generated by the microphone 30 and provides a filtered signal S 'in which certain frequency ranges are filtered out, for which a decision logic 33 has recognized the risk of feedback.
  • the decision logic 33 determines filter parameters f c and Q by means of which the bandpass filter 32 is set.
  • Amplifier can be provided.
  • the amplifier function can also by the Bandpass filters are taken.
  • the bandpass filter 32 is advantageously designed as a filter bank, as shown in FIG.
  • the filter bank advantageously comprises up to 10 notch filters.
  • FIG. 5 shows an exemplary embodiment of a sequence chip implemented in a decision logic 33.
  • an examination frequency is first determined in a step 40.
  • the frequency f of the signal S analyzed and, as exemplified in Fig. 6, the power P of the signal S on, for example, 192 different test frequencies f n, f n + 1, f n + 2, f n + 3, f n + 4 , f n + 5 , f n + 6 , f n + 7 , f n + 8 determined, which are eg 40Hz apart.
  • the examination frequency f n + 5 at which the power is maximum, the subsequent sequence is run through. However, it is also possible to go through the following procedure for more than one examination frequency.
  • the term of the power according to the invention may include the amplitude or its time average. Also included in the sense of the invention are other modifications of the power, the amplitude or their time averages, such as normalized quantities.
  • the value of the power of the signal S at this examination frequency f n can be divided by the sum of the power of the signal S at all examination frequencies f n , f n + 1 , f n + 2 , f n + 3 , f n + 4 , f n + 5 , f n + 6 , f n + 7 , f n + 8 .
  • the step 40 is followed by a query 41, if there is a risk of feedback. Details of this query are made with reference to FIGS. 7 and 10. Unless the danger the feedback consists, the query 41 follows a query 42, whether that of the Microphone 30 already generates signal S by means of the bandpass filter the examination frequency has been reduced around.
  • the query 42 is followed by a step 43 in which the filter parameters, ie the center frequency f c and the quality Q of the bandpass filter Filters are generated.
  • the center frequency f c is an example of the blocking frequency in the sense of the claims.
  • the blocking frequency in the sense of the claims can also be, in particular, the frequency range around the center frequency f c , which the bandpass filter actually filters out of the signal S generated by the microphone 30.
  • the quality Q is set to a predetermined value of e.g. 1 / 40Hz set.
  • Step 43 is followed by inquiry 45 as to whether the program should be terminated. Should that If the program does not terminate, query 45 is followed by step 40. Otherwise the program is ended.
  • the query 43 is followed by a step 44, in which the quality Q is reduced.
  • the bandpass filter is adjusted so that it blocks the proportion of the signal generated by the microphone at an increased frequency range around the center frequency f c around.
  • Step 44 is followed by step 40.
  • query 41 is followed by query 45 or optionally, a step 46 in which the filtering of the microphone 30 generated by the microphone Signal S is terminated around the examination frequency.
  • the query 41 is repeated at the earliest after expiration of a minimum dead time, the minimum dead time in the present embodiment is 200ms to 300ms.
  • Fig. 7 shows an embodiment for the query 41.
  • a query 50 is first provided, whether the power of the signal generated by the microphone 30 S at the examination frequency by not less than a lower limit .DELTA.l greater than the power of the microphone 30 generated signal S at the first harmonic (ie twice) of the examination frequency.
  • the lower limit ⁇ 1 is for example between 5 and 20 dB.
  • the lower limit ⁇ 1 is substantially 12dB.
  • This query is illustrated by way of example in FIG. 8, where f H0 denotes the examination frequency, f H1 , f H2 , f H3 and f H4 the first, second, third and fourth harmonics of the examination frequency and f H1 / 2 the first subharmonic of the examination frequency.
  • query 50 is thus queried whether P (f H0 ) -P (f H1 ) ⁇ ⁇ 1
  • query 50 may be provided for one or more of the queries P (f H0 ) -P (f H1 / 2 ) ⁇ ⁇ 1 P (f H0 ) -P (f H2 ) ⁇ ⁇ 1 P (f H0 ) -P (f H3 ) ⁇ ⁇ 1 P (f H0 ) -P (f H4 ) ⁇ ⁇ 1 to supplement, where appropriate, other limits can be selected.
  • the examination frequencies fn , fn + 1 , fn + 2 , fn + 3 , fn + 4 , fn + 5 , fn + 6 , fn + 7 , fn + 8 in Fig. 6 are of to distinguish the subharmonic / harmonics f H1 / 2 , f H1 , f H2 , f H3 and f H4 in Fig. 8 and Fig. 9, respectively.
  • the query 50 is followed by a query 51.
  • the query 51 queries whether the power of the signal S generated by means of the microphone 30 at the examination frequency is not greater than an upper limit ⁇ 2 greater than the power of the signal S generated by the microphone 30 at the first harmonic of the examination frequency.
  • the upper limit ⁇ 2 is for example between 20 and 40 dB.
  • the upper limit ⁇ 2 is substantially 30 dB. This query is illustrated by way of example in FIG.
  • f H0 denotes the examination frequency
  • f H1 , f H2 , f H3 and f H4 the first, second, third and fourth harmonics of the examination frequency
  • f H1 / 2 the first subharmonic of the examination frequency.
  • P again denotes the power at a frequency f.
  • query 51 is thus queried whether P (f H0 ) -P (f H1 ) ⁇ ⁇ 2
  • query 51 may be provided for one or more of the queries P (f H0 ) -P (f H1 / 2 ) ⁇ ⁇ 2 P (f H0 ) -P (f H2 ) ⁇ ⁇ 2 P (f H0 ) -P (f H3 ) ⁇ ⁇ 2 P (f H0 ) -P (f H4 ) ⁇ ⁇ 2 to supplement, where appropriate, other limits can be selected.
  • the query 51 follows a query 52, by means of the signal generated by comparing the power of the microphone 30 S at the examination frequency with the power of the microphone 30th generated signal S at the examination frequency to at least one earlier Time is inquired whether the power of the signal generated by the microphone at the examination frequency increases exponentially.
  • Fig. 10 shows a further embodiment for the query 41. It is first a query 60 is provided as to whether the power generated by the microphone 30 Signal S at the examination frequency is greater than a predetermined limit value. In This case is followed by a query 61 corresponding to query 50. The queries 62 and 63 correspond to the queries 51 and 52.
  • Fig. 11 shows a preferred embodiment for one in the decision logic 33 implemented expiration.
  • the process starts with a step 81, which is the step 40 in Fig. 5 corresponds.
  • Step 81 is followed by a query 41 in FIG. 5 Query 82, if there is a risk of feedback.
  • Embodiments for the Query 82 is shown in FIG. 7 and FIG. 10.
  • FIG. 7 and FIG. 10 In connection with the exemplary embodiment Figure 11 has an implementation of a feedback detection (query 82), as is explained in more detail in Fig. 12, found to be advantageous.
  • query 82 is query 83 corresponding to query 45 to see if the program terminates shall be. If the program is not terminated, then query 93 follows Step 81. Otherwise, the program will exit.
  • query 82 is followed by query 42 corresponding query 83, whether the generated by the microphone 30 signal S already by means of the bandpass filter around signal portions around the examination frequency around is reduced. If the signal S generated by the microphone 30 is already using the Bandpass filter reduced by signal components around the examination frequency, so the query 83 follows a query 85 otherwise a query 84.
  • Query 84 queries whether a notch filter is available. If a notch filter is available, query 84 is followed by a step 88 corresponding to step 43, in which the filter parameters, ie the center frequency f c and the quality Q of the bandpass filter for the specific embodiment, are generated. If query 84 indicates that no notch filter is available, query 84 is followed by a step 86 in which the power of signal S is reduced by a reduction factor which is advantageously between 2 dB and 5 dB, in particular at substantially 3dB , Step 86 is followed by a step 87 in which the entire run is stopped for a stop time of substantially 3 seconds. However, this step should only be executed once per run.
  • the query 85 is queried whether by a further expansion of the Frequency range in which the bandpass filter blocks, so by further reduction of its quality Q, a predetermined minimum quality would be undercut.
  • the query 85 follows a step 89, otherwise a step 91.
  • step 91 corresponding to step 44 the Q is reduced.
  • Steps 87, 88 and 91 are followed by a step 92, in which the process has a minimum dead time long, wherein the minimum dead time in the present embodiment 100ms.
  • step 89 the power of the signal S is reduced by a reduction factor advantageously between 2dB and 5dB, especially at substantially 3dB, reduced.
  • the step 89 is followed by a step 90 in which the entire run for a Stopping time of substantially 3s is stopped.
  • FIG. 7 shows an exemplary embodiment for the query 82, according to which also query 41 can be implemented.
  • a query 95 is provided, whether the Power of the signal S generated by the microphone 30 at the examination frequency greater than 750ms greater than the power of the microphone 30 generated signal S every other examination frequency. Is the performance of by the microphone 30 generated signal S at the examination frequency longer than 750 ms is greater than the power of the signal generated by the microphone 30 S every other examination frequency, query 95 is followed by a query 96. Otherwise, query 95 follows query 93.
  • query 96 is queried whether the power of the microphone 30th generated signal S at the examination frequency by not less than 12dB larger is the power of the signal S generated by the microphone 30 at the first one Harmonic (that is twice) of the examination frequency. Is the power of the signal S generated by the microphone 30 at the examination frequency not less than 12dB greater than the power of the microphone 30 generated signal S at the first harmonic of the examination frequency, it follows query 96 has a query 97. Otherwise, query 96 follows query 93.
  • query 97 is queried whether the power of the microphone 30th generated signal S at the examination frequency longer than 750ms greater than one Threshold is. Is the power of the generated by the microphone 30 signal S at the examination frequency longer than 750ms greater than a threshold query 97 follows query 83. Otherwise, query 95 follows query 93.
  • the feedback detection according to the invention is not based on the embodiments limited according to Fig. 7, Fig. 10 and Fig. 12. It can e.g. be provided that the queries 52 and 63 follow the no outputs of the queries 50 and 61, respectively. moreover can be provided, the embodiments of FIG. 7, Fig. 10 and Fig. 12 with their binary decision logic by a fuzzy decision logic, so fuzzy logic or replace neural networks.

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • General Health & Medical Sciences (AREA)
  • Computational Linguistics (AREA)
  • Quality & Reliability (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Multimedia (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
EP04000822.9A 2003-02-07 2004-01-16 Appareil et méthode pour le fonctionnement de systèmes assistés par la parole dans des véhicules automobiles Expired - Lifetime EP1445761B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/360,889 US7467084B2 (en) 2003-02-07 2003-02-07 Device and method for operating a voice-enhancement system
US360889 2003-02-07

Publications (2)

Publication Number Publication Date
EP1445761A1 true EP1445761A1 (fr) 2004-08-11
EP1445761B1 EP1445761B1 (fr) 2016-05-25

Family

ID=32655663

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04000822.9A Expired - Lifetime EP1445761B1 (fr) 2003-02-07 2004-01-16 Appareil et méthode pour le fonctionnement de systèmes assistés par la parole dans des véhicules automobiles

Country Status (2)

Country Link
US (1) US7467084B2 (fr)
EP (1) EP1445761B1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005018277A1 (fr) * 2003-07-18 2005-02-24 Volkswagen Aktiengesellschaft Dispositif et procede pour exploiter des systemes a assistance vocale dans des automobiles
DE102006016593A1 (de) * 2006-04-06 2007-10-11 Bury Gmbh & Co. Kg Kommunikationseinrichtung für Fahrzeuge

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050153758A1 (en) * 2004-01-13 2005-07-14 International Business Machines Corporation Apparatus, system and method of integrating wireless telephones in vehicles
WO2008061205A2 (fr) * 2006-11-16 2008-05-22 Johnson Controls Technology Company Système de communication intégré pour véhicule
US8626516B2 (en) * 2009-02-09 2014-01-07 Broadcom Corporation Method and system for dynamic range control in an audio processing system
GB2471719A (en) * 2009-07-10 2011-01-12 Secomak Ltd A vehicular communications system
US10857909B2 (en) 2019-02-05 2020-12-08 Lear Corporation Electrical assembly
US10418019B1 (en) * 2019-03-22 2019-09-17 GM Global Technology Operations LLC Method and system to mask occupant sounds in a ride sharing environment
JP2023179092A (ja) * 2022-06-07 2023-12-19 アルプスアルパイン株式会社 コミュニケーション支援システム

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3925589A1 (de) 1989-08-02 1991-02-14 Blaupunkt Werke Gmbh Verfahren und anordnung zur stoerbefreiung von sprachsignalen
DE4106405C2 (de) 1990-03-23 1996-02-29 Ricoh Kk Geräuschunterdrückungseinrichtung für ein Spracherkennungsystem
DE19705471A1 (de) 1997-02-13 1997-07-24 Sibet Gmbh Sican Forschungs Un Verfahren und Schaltungsanordnung zur Spracherkennung und zur Sprachsteuerung von Vorrichtungen
WO1998056208A2 (fr) * 1997-06-03 1998-12-10 Ut Automotive Dearborn, Inc. Systeme d'information des passagers
EP0903726A2 (fr) 1997-09-11 1999-03-24 Digisonix, Inc. Système acoustique et active d'élimination de bruille et d'écho
DE19958836A1 (de) 1999-11-29 2001-05-31 Deutsche Telekom Ag Verfahren und Anordnung zur Verbesserung der Kommunikation in einem Fahrzeug
EP1077013B1 (fr) 1998-05-06 2002-03-06 Volkswagen Aktiengesellschaft Procede et dispositif pour le fonctionnement de systemes a commande vocale installes dans des vehicules automobiles
WO2002021817A2 (fr) 2000-09-09 2002-03-14 Harman International Industries Limited Procede et systeme d'elimination de la reaction acoustique
WO2002032356A1 (fr) * 2000-10-19 2002-04-25 Lear Corporation Traitement transitoire pour systeme de communication
WO2002069487A1 (fr) 2001-02-21 2002-09-06 Digisonix, Llc Systeme dve avec detection d'instabilite

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5870292A (ja) 1981-10-22 1983-04-26 日産自動車株式会社 車両用音声認識装置
ES2135408T3 (es) * 1991-05-29 1999-11-01 Pacific Microsonics Inc Sistema mejorado de codificacion/decodificacion de señales.
US5214708A (en) * 1991-12-16 1993-05-25 Mceachern Robert H Speech information extractor
US5574824A (en) * 1994-04-11 1996-11-12 The United States Of America As Represented By The Secretary Of The Air Force Analysis/synthesis-based microphone array speech enhancer with variable signal distortion
US5920840A (en) * 1995-02-28 1999-07-06 Motorola, Inc. Communication system and method using a speaker dependent time-scaling technique
US5903819A (en) 1996-03-13 1999-05-11 Ericsson Inc. Noise suppressor circuit and associated method for suppressing periodic interference component portions of a communication signal
US6674865B1 (en) * 2000-10-19 2004-01-06 Lear Corporation Automatic volume control for communication system

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3925589A1 (de) 1989-08-02 1991-02-14 Blaupunkt Werke Gmbh Verfahren und anordnung zur stoerbefreiung von sprachsignalen
DE4106405C2 (de) 1990-03-23 1996-02-29 Ricoh Kk Geräuschunterdrückungseinrichtung für ein Spracherkennungsystem
DE19705471A1 (de) 1997-02-13 1997-07-24 Sibet Gmbh Sican Forschungs Un Verfahren und Schaltungsanordnung zur Spracherkennung und zur Sprachsteuerung von Vorrichtungen
WO1998056208A2 (fr) * 1997-06-03 1998-12-10 Ut Automotive Dearborn, Inc. Systeme d'information des passagers
EP0903726A2 (fr) 1997-09-11 1999-03-24 Digisonix, Inc. Système acoustique et active d'élimination de bruille et d'écho
EP1077013B1 (fr) 1998-05-06 2002-03-06 Volkswagen Aktiengesellschaft Procede et dispositif pour le fonctionnement de systemes a commande vocale installes dans des vehicules automobiles
DE19958836A1 (de) 1999-11-29 2001-05-31 Deutsche Telekom Ag Verfahren und Anordnung zur Verbesserung der Kommunikation in einem Fahrzeug
WO2002021817A2 (fr) 2000-09-09 2002-03-14 Harman International Industries Limited Procede et systeme d'elimination de la reaction acoustique
WO2002032356A1 (fr) * 2000-10-19 2002-04-25 Lear Corporation Traitement transitoire pour systeme de communication
WO2002069487A1 (fr) 2001-02-21 2002-09-06 Digisonix, Llc Systeme dve avec detection d'instabilite

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005018277A1 (fr) * 2003-07-18 2005-02-24 Volkswagen Aktiengesellschaft Dispositif et procede pour exploiter des systemes a assistance vocale dans des automobiles
US7912228B2 (en) 2003-07-18 2011-03-22 Volkswagen Ag Device and method for operating voice-supported systems in motor vehicles
DE102006016593A1 (de) * 2006-04-06 2007-10-11 Bury Gmbh & Co. Kg Kommunikationseinrichtung für Fahrzeuge

Also Published As

Publication number Publication date
US7467084B2 (en) 2008-12-16
EP1445761B1 (fr) 2016-05-25
US20040158460A1 (en) 2004-08-12

Similar Documents

Publication Publication Date Title
DE60028779T2 (de) Rückkopplungsanullierung mit niederfrequenzeingang
DE602004004242T2 (de) System und Verfahren zur Verbesserung eines Audiosignals
EP1470735B1 (fr) Procede de determination d'une situation acoustique environnante, utilisation du procede et appareil de correction auditive
DE60031583T2 (de) Sprachverteilungssystem
WO1995007597A1 (fr) Appareil radiotelephonique mobile a dispositif mains libres
EP3337189A1 (fr) Procédé de détermination de direction d'une source de signal
WO2011101043A1 (fr) Procédé de perception latérale biauriculaire pour aides auditives
EP1445761B1 (fr) Appareil et méthode pour le fonctionnement de systèmes assistés par la parole dans des véhicules automobiles
EP3793209B1 (fr) Appareil auditif avec annulation active du bruit et procédé de fonctionnement de lequel
DE112016004394B4 (de) Heulunterdrückungsvorrichtung
DE10020756B4 (de) Vorrichtung und Verfahren zum geräuschabhängigen Anpassen eines akustischen Nutzsignals
EP1101390A1 (fr) Appareil auditif permettant une meilleure comprehension de la parole grace a un traitement de signal selectif en frequence, et procede permettant de faire fonctionner un tel appareil auditif
DE102013011761A1 (de) Kraftfahrzeug mit einer Freisprecheinrichtung und Verfahren zur Erzeugung eines Frequenzganges für Freisprecheinrichtungen
EP1649719B1 (fr) Dispositif et procédé pour exploiter des systèmes à assistance vocale dans des automobiles
DE102023104309A1 (de) Verfahren und System zur Verbesserung der Klangwiedergabe von Niederfrequenzen eines Audiosignals
DE10025496A1 (de) Audiosystem, insbesondere für Kraftfahrzeuge
EP3951780B1 (fr) Procédé de fonctionnement d'un appareil auditif et appareil auditif
EP3340656B1 (fr) Procédé de fonctionnement d'un dispositif de correction auditive
EP1077013B1 (fr) Procede et dispositif pour le fonctionnement de systemes a commande vocale installes dans des vehicules automobiles
DE2456468A1 (de) Vorrichtung zur verbesserung der hoerbarkeit und verstaendlichkeit einer elektroakustischen tonwiedergabe
DE3602000C2 (fr)
EP3956887B1 (fr) Atténuation de bruit pour des signaux audio dans un véhicule
DE102013221127A1 (de) Betrieb einer Kommunikationsanlage in einem Kraftfahrzeug
EP3955241A1 (fr) Procédé de fonctionnement d'un appareil auditif et appareil auditif
DE102010006285A1 (de) KFZ-Audiosystem

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK

RTI1 Title (correction)

Free format text: APPARATUS AND METHOD FOR OPERATING VOICE CONTROLLED SYSTEMS IN VEHICLES

RTI1 Title (correction)

Free format text: APPARATUS AND METHOD FOR OPERATING VOICE CONTROLLED SYSTEMS IN VEHICLES

17P Request for examination filed

Effective date: 20050211

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

17Q First examination report despatched

Effective date: 20050427

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: VOLKSWAGEN AKTIENGESELLSCHAFT

REG Reference to a national code

Ref country code: DE

Ref legal event code: R079

Ref document number: 502004015202

Country of ref document: DE

Free format text: PREVIOUS MAIN CLASS: G10L0021020000

Ipc: G10L0021020800

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

RIC1 Information provided on ipc code assigned before grant

Ipc: H04R 3/02 20060101ALI20151116BHEP

Ipc: G10L 21/0208 20130101AFI20151116BHEP

INTG Intention to grant announced

Effective date: 20151217

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 802905

Country of ref document: AT

Kind code of ref document: T

Effective date: 20160615

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502004015202

Country of ref document: DE

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20160525

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160525

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160525

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160525

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160826

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160926

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160525

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160525

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160525

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160525

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160525

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160525

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160525

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502004015202

Country of ref document: DE

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20170228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160525

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170131

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20170116

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160525

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20170929

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170131

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170131

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170131

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170116

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170116

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20170131

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170116

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 802905

Country of ref document: AT

Kind code of ref document: T

Effective date: 20170116

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170116

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20040116

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160525

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160525

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160525

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20200131

Year of fee payment: 17

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502004015202

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210803