EP1239700A2 - Verfahren zum Betrieb eines Hörhilfegerätes oder Hörgerätesystem sowie Hörhilfegerät oder Hörgerätesystem - Google Patents
Verfahren zum Betrieb eines Hörhilfegerätes oder Hörgerätesystem sowie Hörhilfegerät oder Hörgerätesystem Download PDFInfo
- Publication number
- EP1239700A2 EP1239700A2 EP02003475A EP02003475A EP1239700A2 EP 1239700 A2 EP1239700 A2 EP 1239700A2 EP 02003475 A EP02003475 A EP 02003475A EP 02003475 A EP02003475 A EP 02003475A EP 1239700 A2 EP1239700 A2 EP 1239700A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- hearing aid
- microphone
- feedback
- oscillations
- signal
- 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
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R25/00—Electric hearing aids
- H04R25/55—Electric hearing aids using an external connection, either wireless or wired
- H04R25/552—Binaural
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R25/00—Electric hearing aids
- H04R25/40—Arrangements for obtaining a desired directivity characteristic
- H04R25/407—Circuits for combining signals of a plurality of transducers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
- H04R25/00—Electric hearing aids
- H04R25/45—Prevention of acoustic reaction, i.e. acoustic oscillatory feedback
- H04R25/453—Prevention of acoustic reaction, i.e. acoustic oscillatory feedback electronically
Definitions
- the invention relates to a method for operating a hearing aid or hearing aid system with at least a first Microphone for generating a first microphone signal and a spaced-apart second microphone for generating a second microphone signal.
- the invention further relates to a Hearing aid or hearing aid system for performing the method.
- the first class includes the so-called compensation algorithms, which with the help of adaptive filters the feedback portion in the Estimate the microphone signal and neutralize it by subtraction and therefore do not impair hearing aid amplification. Indeed put these compensation methods uncorrelated, i.e. ideally "white", input signals ahead. Tonale Input signals that always have a high temporal correlation lead to an incorrect estimate of the feedback path, which can mistakenly lead to that tonal input signal itself is subtracted.
- the second class contains the algorithms that only then become active if there are feedback-related oscillations are. They generally contain a mechanism to detect oscillations of the microphone signal continuously supervised. Become feedback-typical oscillations detected, the hearing aid gain is reduced so far that the loop gain is below the critical limit sinks.
- the gain reduction can e.g. by lowering a frequency channel or by activating a suitable one narrow-band notch filter. adversely is that the oscillation detectors in principle not between tonal input signals and feedback whistles can distinguish. The result is that tonal input signals mistaken for feedback oscillations and then inadmissible through the reduction mechanism (e.g. notch filter) be lowered in level.
- the compensation algorithms often become decorrelating acting delay elements in the signal processing chain introduced to prevent tonal signal sections with a length that is characteristic of speech signals be attacked noticeably.
- due to Echo effects and irritation through desynchronized visual and auditory information only delays in the millisecond range allowed. Therefore, for example, the reduction of music signals, often over a significantly longer period Period are correlated, cannot be avoided.
- a another countermeasure is to adapt the filter so slow that all relevant tonal useful signals not be attacked.
- this also has the consequence that the compensation filter changes rapidly Feedback paths can no longer follow fast enough, so that feedback-related oscillations for a certain time arise and only disappear when the Feedback path has stabilized and the filter is sufficient again is adapted enough.
- the object of the present invention is to provide a method for Operation of a hearing aid or hearing aid system and a Specify hearing aid or hearing aid system in which feedback-related Oscillations can be avoided without doing so the sound quality deteriorate noticeably.
- T2 is one Feedback suppression arrangement with adaptive filtering known for a hearing prosthesis, which in a special Embodiment has two microphones. A detection of Oscillations are not carried out.
- the invention can be used with all common hearing aid types can be used, for example, behind the ear wearable Hearing aids, in the ear portable hearing aids, implantable hearing aids or handheld devices. Farther one of several can be used to care for the hearing impaired Existing hearing aid systems are used, e.g. a hearing aid system with two hearing aids worn on the head for binaural care.
- microphone signals are at least two spaced microphones generated. At least it has to a microphone be arranged so that it is feedback-related Hearing aid device does not oscillate or at most in a weakened form.
- useful signals are said to be similar in the microphones concerned Way to be included.
- the tonal useful signals then differ from the microphones hardly generated any microphone signals, so this are recognized as useful signals.
- feedback-related signals recorded very differently by the microphones, so that this results from the comparison of the microphone signals as feedback recognized and reduced by suitable measures can be.
- the distance between the microphones, their microphone signals can be compared with each other, for example by the Attaching a microphone to a collar clip become.
- Another possibility is a hearing aid system with two hearing aids for binaural care. The comparison can then between a microphone signal or a derived signal of a hearing aid with a Microphone signal or a signal derived therefrom second hearing aid. Useful signals are then from the two microphones recorded approximately the same and due to feedback Oscillations on a hearing aid arise, are not detected by the other hearing aid.
- a signal path is provided for signal transmission is between the hearing aids a signal path is provided. The signal transmission can done wirelessly or wired.
- the derived one Signal comprises characteristic parameters of the microphone signal, that are relevant to detecting oscillations are. For example, these are the oscillation frequencies of the Microphone signal and the signal strength at the respective oscillation frequencies.
- the invention forms oscillations by means of these narrow-band filter, whose cut-off frequencies roughly match the To eliminate oscillation frequencies.
- the Filters can e.g. be designed as a notch filter. Enough a notch filter does not turn off when it is detected again of oscillations further notch filters at the respective frequency activated.
- Is an adaptive filter for reduction in a hearing aid device feedback-related oscillations used so is detected according to a variant of the invention when feedback-related Oscillations the adaptive compensation filter customized.
- the operating parameters of the filter are changed so that an increase in the Adaptation speed takes place.
- the rate of adaptation is reversed of the adaptive compensation filter reduced, if no feedback-related oscillations are detected become.
- This principle can also be applied analogously to frequency range-based Apply compensation filter. Either the correlation analysis to identify feedback-related Oscillations as well as the regulation of the adaptation speed can advantageously be frequency-specific.
- Detects a hearing aid device due to feedback At least oscillations based on a correlation analysis two microphone signals (cross correlation), so there is another way to reduce these oscillations therein, uncorrelated frequency components of the microphone signals to suppress. Then only the signal components processed further, essentially in all microphone signals are equally present.
- the hearing aid shown schematically in Figure 1 includes a microphone 1, a signal processing unit 2 and one Handset 3. Receives sound that is output through the handset 3 becomes microphone 1 again, feedback-related Oscillations (feedback) arise. Conditions for this are that the so-called loop gain of the system, i.e. the product of hearing aid amplification and attenuation of the feedback path is greater than 1 and that the phase shift this loop gain an integer Corresponds to multiples of 360 °.
- an evaluation and control unit 5 in addition to the Microphone signal of the microphone 1 another microphone signal supplied by a microphone 4.
- the two microphones 1 and 4 are arranged so that useful sound from both microphones is in is recorded approximately equally.
- the microphone 4 for example on a collar clip outside the housing, in which the microphone 1 is arranged attached.
- the evaluation and control unit 5 are those emanating from the microphones Microphone signals analyzed and compared. For example, through auto correlation analysis Oscillations in the individual microphone signals are detected become. If there are oscillations in both microphone signals, so their frequencies are determined and compared with each other. With oscillations in both microphone signals are equally present, it is with great certainty around tonal input signals. With oscillations that only in a microphone signal, especially that of a microphone 1 outgoing microphone signal are present with a high probability of feedback-related oscillations. To eliminate them, the Signal processing unit 2 by means of the evaluation and control unit 5. For example, for filtering out the oscillation frequencies in the signal processing unit 2 narrowband Notch filter can be activated and adjusted.
- the microphone signals of the Microphones 1 and 4 also initially each have a signal preprocessing unit 6 and 7 can be supplied.
- the signal preprocessing can, for example, an A / D conversion or a Include signal pre-amplification.
- FIG. 2 shows two hearing aids 11 and 11 ', each with one Microphone 12 or 12 ', a signal processing unit 13 or 13 'and a receiver 14 or 14'.
- One oscillation detector each 15 or 15 ' continuously monitors the microphone signal on oscillations and determined when oscillations are detected the oscillation frequencies.
- the signal path 17 an exchange of the detected oscillation frequencies.
- the comparison units 16 and 16 ' the oscillation frequencies of the hearing aid in question with the oscillation frequencies of the other hearing aid compared.
- Notch filter does not turn off, so if Oscillations of further notch filters N2 to NN or N2 'to NN' be activated at the respective frequencies.
- the invention is not based on the illustrated embodiments limited, but expandable by a variety of variants.
- feedback-related can be used to identify Oscillations also have more than two microphone signals be compared with each other.
- the signal processing in parallel with a hearing aid according to the invention take place in several channels of the signal processing unit.
- the comparison of microphone signals or the correlation analysis can then also run in parallel in several channels respectively. Measures to reduce detected feedback-related Oscillations are then advantageous only to that channels concerned.
- the comparison or the correlation analysis of microphone signals continuously or depending on certain parameters e.g. the set hearing program or volume setting
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- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Neurosurgery (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Circuit For Audible Band Transducer (AREA)
- Electrically Operated Instructional Devices (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
Description
Claims (16)
- Verfahren zum Betrieb eines Hörhilfegerätes oder Hörgerätesystems (11, 11') mit wenigstens einem ersten Mikrofon (1; 12) zum Erzeugen eines ersten Mikrofonsignals und einem davon beabstandeten zweiten Mikrofon (4; 12') zum Erzeugen eines zweiten Mikrofonsignals, dadurch gekennzeichnet, dass durch Vergleich der Mikrofonsignale oder daraus abgeleiteter Signale rückkopplungsbedingte Oszillationen erkannt werden und bei erkannten rückkopplungsbedingten Oszillationen Maßnahmen zur Reduzierung der rückkopplungsbedingten Oszillationen durchgeführt werden.
- Verfahren zum Betrieb eines Hörhilfegerätes oder Hörgerätesystems nach Anspruch 1, dadurch gekennzeichnet, dass beide Mikrofonsignale auf das Vorhandensein von Oszillationen untersucht werden und eine rückkopplungsbedingte Oszillation bei einer Oszillationsfrequenz festgestellt wird, bei der nur in einem der beiden Mikrofonsignale eine Oszillation vorhanden ist.
- Verfahren zum Betrieb eines Hörhilfegerätes oder Hörgerätesystems nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Mikrofonsignale einer Korrelationsanalyse unterzogen werden und rückkopplungsbedingte Oszillationen bei den Frequenzen erkannt werden, bei denen zu einer Oszillation in einem Mikrofonsignal keine korrelierten Signalanteile in einem anderen Mikrofonsignal vorhanden sind.
- Verfahren zum Betrieb eines Hörhilfegerätes oder Hörgerätesystems nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass bei erkannten rückkopplungsbedingten Oszillationen die Hörgeräteverstärkung reduziert wird.
- Verfahren zum Betrieb eines Hörhilfegerätes oder Hörgerätesystems nach Anspruch 4, wobei die Signalverarbeitung in mehreren parallelen Kanälen einer Signalverarbeitungseinheit (2; 13, 13') erfolgt, dadurch gekennzeichnet, dass bei erkannten rückkopplungsbedingten Oszillationen die Hörgeräteverstärkung des Kanals reduziert wird, in dem die Oszillationsfrequenz liegt.
- Verfahren zum Betrieb eines Hörhilfegerätes oder Hörgerätesystems nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass erkannte rückkopplungsbedingte Oszillationen durch Aktivieren und/oder Anpassen von Filtern (N1, N2, NN, N1', N2', NN') reduziert werden.
- Verfahren zum Betrieb eines Hörhilfegerätes oder Hörgerätesystems nach einem der Ansprüche 1 bis 6 mit einem adaptiven Kompensationsfilter zur Reduzierung rückkopplungsbedingter Oszillationen, dadurch gekennzeichnet, dass bei erkannten rückkopplungsbedingten Oszillationen das adaptive Kompensationsfilter angepasst wird.
- Verfahren zum Betrieb eines Hörhilfegerätes oder Hörgerätesystems nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass zur Unterdrückung rückkopplungsbedingter Oszillationen unkorrelierte Frequenzanteile der Mikrofonsignale reduziert werden.
- Hörhilfegerät oder Hörgerätesystem (11, 11') mit wenigstens einem ersten Mikrofon (1; 12) zum Erzeugen eines ersten Mikrofonsignals, einem davon beabstandeten zweiten Mikrofon (4; 12') zum Erzeugen eines zweiten Mikrofonsignals und einer Signalverarbeitungseinheit (2; 13, 13'), dadurch gekennzeichnet, dass das Hörhilfegerät oder Hörgerätesystem (11, 11') Mittel zum Vergleich der Mikrofonsignale oder daraus abgeleiteter Signale zum Erkennen rückkopplungsbedingter Oszillationen sowie Mittel zum Reduzieren erkannter rückkopplungsbedingter Oszillationen umfasst.
- Hörhilfegerät oder Hörgerätesystem nach Anspruch 9, dadurch gekennzeichnet, dass das Hörhilfegerät oder Hörgerätesystem (11, 11') Mittel zum Erkennen einer Oszillation und zur Bestimmung der Oszillationsfrequenz in dem ersten Mikrofonsignal, Mittel zum Erkennen einer Oszillation und zur Bestimmung der Oszillationsfrequenz in dem zweiten Mikrofonsignal sowie Mittel zum Vergleich der in den beiden Mikrofonsignalen bestimmten Oszillationsfrequenzen aufweist.
- Hörhilfegerät oder Hörgerätesystem nach Anspruch 9 oder 10, gekennzeichnet durch Mittel zur Durchführung einer Korrelationsanalyse der Mikrofonsignale.
- Hörhilfegerät oder Hörgerätesystem nach einem der Ansprüche 9 bis 11, gekennzeichnet durch Mittel zur Reduzierung der Hörgeräteverstärkung.
- Hörhilfegerät oder Hörgerätesystem nach einem der Ansprüche 9 bis 12, bei dem die Signalverarbeitung in mehreren parallelen Kanälen der Signalverarbeitungseinheit (2; 13, 13') erfolgt, gekennzeichnet durch Mittel zur Reduzierung der Hörgeräteverstärkung in einem Kanal.
- Hörhilfegerät oder Hörgerätesystem nach einem der Ansprüche 9 bis 13, gekennzeichnet durch adaptive Filtermittel mit einstellbaren Betriebsparametern zum Reduzieren erkannter rückkopplungsbedingter Oszillationen.
- Hörgerätesystem nach einem der Ansprüche 9 bis 14 mit wenigstens einem ersten Hörhilfegerät und einem zweiten Hörhilfegerät, dadurch gekennzeichnet, dass das erste Mikrofon (12) zum Erzeugen des ersten Mikrofonsignals in dem ersten Hörhilfegerät (11) und das zweite Mikrofon (12') zum Erzeugen des zweiten Mikrofonsignals in dem zweiten Hörhilfegerät (11') angeordnet ist.
- Hörgerätesystem nach Anspruch 15, gekennzeichnet durch einen drahtlosen Signalpfad (17) zur Übertragung der Mikrofonsignale oder daraus abgeleiteter Signale zwischen den Hörhilfegeräten (11, 11').
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10110258A DE10110258C1 (de) | 2001-03-02 | 2001-03-02 | Verfahren zum Betrieb eines Hörhilfegerätes oder Hörgerätesystems sowie Hörhilfegerät oder Hörgerätesystem |
| DE10110258 | 2001-03-02 |
Publications (4)
| Publication Number | Publication Date |
|---|---|
| EP1239700A2 true EP1239700A2 (de) | 2002-09-11 |
| EP1239700A3 EP1239700A3 (de) | 2006-08-02 |
| EP1239700B1 EP1239700B1 (de) | 2008-05-07 |
| EP1239700B2 EP1239700B2 (de) | 2017-07-26 |
Family
ID=7676185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02003475.7A Expired - Lifetime EP1239700B2 (de) | 2001-03-02 | 2002-02-14 | Verfahren zum Betrieb eines Hörhilfegerätes oder Hörgerätesystem sowie Hörhilfegerät oder Hörgerätesystem |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US7013015B2 (de) |
| EP (1) | EP1239700B2 (de) |
| AT (1) | ATE394896T1 (de) |
| DE (2) | DE10110258C1 (de) |
| DK (1) | DK1239700T4 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1748678A3 (de) * | 2005-07-25 | 2009-09-23 | Siemens Audiologische Technik GmbH | Hörvorrichtung und Verfahren zur Reduktion von Rückkopplungen |
Families Citing this family (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7242778B2 (en) * | 2003-04-08 | 2007-07-10 | Gennum Corporation | Hearing instrument with self-diagnostics |
| US7639827B2 (en) * | 2003-10-01 | 2009-12-29 | Phonak Ag | Hearing system which is responsive to acoustical feedback |
| US20060139030A1 (en) * | 2004-12-17 | 2006-06-29 | Hubbard Bradley J | System and method for diagnosing manufacturing defects in a hearing instrument |
| DE102005008318B4 (de) * | 2005-02-23 | 2013-07-04 | Siemens Audiologische Technik Gmbh | Hörhilfegerät mit benutzergesteuerter Einmessautomatik |
| US20070183609A1 (en) * | 2005-12-22 | 2007-08-09 | Jenn Paul C C | Hearing aid system without mechanical and acoustic feedback |
| DE102006019694B3 (de) | 2006-04-27 | 2007-10-18 | Siemens Audiologische Technik Gmbh | Verfahren zum Einstellen eines Hörgeräts mit Hochfrequenzverstärkung |
| US8767975B2 (en) * | 2007-06-21 | 2014-07-01 | Bose Corporation | Sound discrimination method and apparatus |
| DE102007037659B4 (de) | 2007-08-09 | 2013-06-13 | Siemens Audiologische Technik Gmbh | Verfahren zum Betrieb eines Hörgerätesystems und Hörgerätesystem |
| EP2046073B1 (de) * | 2007-10-03 | 2017-03-08 | Oticon A/S | Hörgerätsystem mit Rückkoppelungsanordnung zur Vorhersage und Unterdrückung von akustischer Rückkoppelung |
| US8588445B2 (en) * | 2008-01-10 | 2013-11-19 | Panasonic Corporation | Hearing aid processing apparatus, adjustment apparatus, hearing aid processing system, hearing aid processing method, and program and integrated circuit thereof |
| DK2086250T3 (da) * | 2008-02-01 | 2020-07-06 | Oticon As | Lyttesystem med et forbedret feedback-undertrykkelsessystem, en fremgangsmåde og anvendelse |
| US8611554B2 (en) * | 2008-04-22 | 2013-12-17 | Bose Corporation | Hearing assistance apparatus |
| WO2010019660A2 (en) * | 2008-08-12 | 2010-02-18 | Intricon Corporation | A switch for a hearing aid |
| US8767987B2 (en) * | 2008-08-12 | 2014-07-01 | Intricon Corporation | Ear contact pressure wave hearing aid switch |
| DK2190217T3 (da) * | 2008-11-24 | 2012-05-21 | Oticon As | Fremgangsmåde til reduktion af tilbagekobling i høreapparater samt tilsvarende anordning og tilsvarende computerprogramprodukt |
| EP2246845A1 (de) * | 2009-04-21 | 2010-11-03 | Siemens Medical Instruments Pte. Ltd. | Verfahren und akustische Signalverarbeitungsvorrichtung zur Schätzung von linearen prädiktiven Kodierungskoeffizienten |
| DE112011102933T5 (de) * | 2010-09-03 | 2013-07-18 | Med-El Elektromedizinische Geräte GmbH | Im Mittelohr implantierbares Mikrofon |
| US9078077B2 (en) | 2010-10-21 | 2015-07-07 | Bose Corporation | Estimation of synthetic audio prototypes with frequency-based input signal decomposition |
| JP6069830B2 (ja) * | 2011-12-08 | 2017-02-01 | ソニー株式会社 | 耳孔装着型収音装置、信号処理装置、収音方法 |
| US9654874B2 (en) * | 2013-12-16 | 2017-05-16 | Qualcomm Incorporated | Systems and methods for feedback detection |
| US11109164B2 (en) * | 2017-10-31 | 2021-08-31 | Widex A/S | Method of operating a hearing aid system and a hearing aid system |
| US20250080905A1 (en) * | 2021-08-06 | 2025-03-06 | Nippon Telegraph And Telephone Corporation | Utterance feedback apparatus, utterance feedback method, and program |
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| FR856727A (fr) * | 1938-06-24 | 1940-08-03 | Telefunken Gmbh | Système permettant d'éviter les réactions acoustiques dans les installations de diffusion de parole |
| US3057960A (en) * | 1961-03-13 | 1962-10-09 | Bell Telephone Labor Inc | Normalized sound control system |
| DE6932799U (de) | 1969-08-19 | 1969-11-20 | Vaw Ver Aluminium Werke Ag | Blechprofil fuer dacheindeckungen, wandverkleidungen oder dergleichen |
| FR2533100B1 (fr) * | 1982-09-09 | 1986-06-27 | Sintra Alcatel Sa | Procede et dispositif d'attenuation de bruits parasites |
| US4658426A (en) * | 1985-10-10 | 1987-04-14 | Harold Antin | Adaptive noise suppressor |
| JPH01118900A (ja) * | 1987-11-01 | 1989-05-11 | Ricoh Co Ltd | 雑音抑圧装置 |
| DK159357C (da) | 1988-03-18 | 1991-03-04 | Oticon As | Hoereapparat, navnlig til anbringelse i oeret |
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| AU733433B2 (en) * | 1998-02-18 | 2001-05-17 | Widex A/S | A binaural digital hearing aid system |
| WO2000019605A2 (en) * | 1998-09-30 | 2000-04-06 | House Ear Institute | Band-limited adaptive feedback canceller for hearing aids |
| DE19922133C2 (de) * | 1999-05-12 | 2001-09-13 | Siemens Audiologische Technik | Hörhilfsgerät mit Oszillationsdetektor sowie Verfahren zur Feststellung von Oszillationen in einem Hörhilfsgerät |
| US6594367B1 (en) * | 1999-10-25 | 2003-07-15 | Andrea Electronics Corporation | Super directional beamforming design and implementation |
| US6778674B1 (en) * | 1999-12-28 | 2004-08-17 | Texas Instruments Incorporated | Hearing assist device with directional detection and sound modification |
| DE10048354A1 (de) † | 2000-09-29 | 2002-05-08 | Siemens Audiologische Technik | Verfahren zum Betrieb eines Hörgerätesystems sowie Hörgerätesystem |
-
2001
- 2001-03-02 DE DE10110258A patent/DE10110258C1/de not_active Revoked
-
2002
- 2002-02-14 DE DE50212199T patent/DE50212199D1/de not_active Expired - Lifetime
- 2002-02-14 AT AT02003475T patent/ATE394896T1/de not_active IP Right Cessation
- 2002-02-14 DK DK02003475.7T patent/DK1239700T4/da active
- 2002-02-14 EP EP02003475.7A patent/EP1239700B2/de not_active Expired - Lifetime
- 2002-03-01 US US10/086,289 patent/US7013015B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1748678A3 (de) * | 2005-07-25 | 2009-09-23 | Siemens Audiologische Technik GmbH | Hörvorrichtung und Verfahren zur Reduktion von Rückkopplungen |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10110258C1 (de) | 2002-08-29 |
| US20020176594A1 (en) | 2002-11-28 |
| DK1239700T3 (da) | 2008-09-01 |
| DK1239700T4 (da) | 2017-11-06 |
| EP1239700B1 (de) | 2008-05-07 |
| ATE394896T1 (de) | 2008-05-15 |
| EP1239700A3 (de) | 2006-08-02 |
| DE50212199D1 (de) | 2008-06-19 |
| EP1239700B2 (de) | 2017-07-26 |
| US7013015B2 (en) | 2006-03-14 |
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