EP2311273A1 - Procédé et dispositif auditif pour le réglage de la suppression de la réaction - Google Patents

Procédé et dispositif auditif pour le réglage de la suppression de la réaction

Info

Publication number
EP2311273A1
EP2311273A1 EP10724377A EP10724377A EP2311273A1 EP 2311273 A1 EP2311273 A1 EP 2311273A1 EP 10724377 A EP10724377 A EP 10724377A EP 10724377 A EP10724377 A EP 10724377A EP 2311273 A1 EP2311273 A1 EP 2311273A1
Authority
EP
European Patent Office
Prior art keywords
feedback
events
frequency
unit
suppression
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.)
Withdrawn
Application number
EP10724377A
Other languages
German (de)
English (en)
Inventor
Dirk Junius
Stefan Petrausch
Nadine Seubert
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.)
Sivantos Pte Ltd
Original Assignee
Siemens Medical Instruments Pte Ltd
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 Siemens Medical Instruments Pte Ltd filed Critical Siemens Medical Instruments Pte Ltd
Publication of EP2311273A1 publication Critical patent/EP2311273A1/fr
Withdrawn legal-status Critical Current

Links

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
    • H04R25/70—Adaptation of deaf aid to hearing loss, e.g. initial electronic fitting
    • 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 specified in claim 1 method for setting a feedback suppression, a specified in claim 5 computer program product for performing the method and a specified in claim 6 hearing aid with a feedback suppression unit.
  • acoustic feedback shows an arrangement shown schematically in FIG. 1 with a hearing device 1.
  • An incidental acoustic signal 9 is picked up by a microphone 2 of the hearing device 1.
  • the recorded signal 9 is processed and amplified in a signal processing unit 6, among others, and emitted again via a receiver 3 as an acoustic signal.
  • Acoustic coupling from the receiver 3 back to the microphone 2 takes place via a physical feedback path 4.
  • the recorded signal 9 therefore consists of the sum of an incoming useful signal 8 and the signal of the feedback path 4.
  • feedback whistling can occur when superimpose the signals in phase. Sound artifacts can occur earlier.
  • the physical feedback path 4 can be digitally replicated.
  • the simulation takes place with the aid of an adaptive compensation filter 5, which is fed by the receiver signal.
  • the filtered listener signal is inverted and added to the microphone signal in an adder 7.
  • the resulting signals of both paths are subtracted from each other, ideally the effect of the physical feedback path 4 is canceled.
  • hearing aid manufacturers are making several settings available for feedback suppression. Although a “fast” setting responds quickly to changes in the feedback path, it picks up the useful signal and leads to artifacts.A "slow” setting has good sound quality with a consistent or slow-changing feedback path, but can not change the path quickly follow, which in turn leads to feedback whistles.
  • a hearing care professional must therefore specify one of the offered settings when setting the hearing aid. In his selection, he relies on his experience or on statements of the hearing aid wearer. This can lead to a suboptimal adjustment of the feedback suppression. In addition, the requirements for setting the feedback suppression frequently change in daily use. For example, if the wearer wears a hat or leans against a headrest, a "fast” setting is preferred, whereas a “slow” setting is desirable in the concert hall.
  • the stated object is achieved with the method for setting a feedback suppression of independent claim 1, with the computer program program.
  • the invention claims a method for adjusting a feedback suppression in a hearing device by determining feedback events, determining the frequency of the feedback events within a predeterminable first time period and by setting the feedback suppression according to the frequency of the feedback events. This offers the advantage that the hearing device can automatically select according to the feedback situation between different feedback algorithms and thus an optimum of sound and feedback quality can be achieved.
  • the feedback events may be events in which the feedback suppression responds and / or in which a feedback above a predefinable feedback threshold value is detected.
  • the method may include pre-optimized parameter sets for setting the feedback suppression. This makes it easy to switch between "fast” and “slow” feedback suppression algorithms.
  • the method may further comprise the following steps: determining the frequency of the feedback events within a predefinable second period of time,
  • the invention also claims a computer program product with a computer program which has software means for carrying out the method according to the invention when the computer program is executed in a control unit of a hearing apparatus.
  • the invention also claims a hearing device with a feedback suppression unit that responds when an acoustic feedback occurs, and / or with an acoustic feedback detection unit.
  • the hearing device also comprises an event unit for determining feedback events, a computing unit for determining the frequency of the feedback events within a predefinable first time interval and a control unit for setting the feedback suppression unit according to the frequency of the feedback events.
  • the feedback events may be events in which the feedback suppression responds and / or in which a feedback above a predefinable feedback threshold value is detectable.
  • the hearing device may comprise pre-optimized parameter sets for setting the feedback suppression unit.
  • the hearing device may comprise a memory unit for storing the frequency of the feedback events occurring within a predeterminable second time duration and an output unit for outputting the stored frequency.
  • the hearing device can be a hearing device with at least one microphone and at least one earpiece.
  • FIG. 1 shows a block diagram of a hearing aid with feedback suppression according to the prior art
  • FIG. 2 shows a block diagram of a hearing aid with feedback suppression according to the invention
  • FIG. 3 shows a flow diagram of a method according to the invention for setting the feedback suppression.
  • FIG. 2 shows a block diagram of a hearing device 1 with a microphone 2 for converting sound signals into an electrical microphone signal, a signal processing unit 6 which controls the microphone signal i.a. amplified and outputs as a receiver signal to a handset 3.
  • the electrical handset signal is again converted into a sound signal and fed to the eardrum of a hearing aid wearer.
  • the hearing aid 1 comprises a feedback suppression unit 10.
  • the feedback suppression unit 10 generates from the handset signal a compensation signal which is added in inverted form to the microphone signal by means of the adder 7. This can suppress feedback artifacts.
  • the feedback suppression unit 10 is controlled by a feedback detection unit 11. This controls, for example, an adaptive filter in the feedback suppression unit 10 in accordance with the occurrence of feedback.
  • the feedback suppression unit 10 has four pre-optimized parameter sets which enable a setting adapted to the feedback situation. For example, a fast change of a feedback path requires one fast variable feedback rejection, whereas a slow change of the feedback path only provides slowly variable feedback rejection.
  • the selection of a suitable parameter set is made by the inventive counting of feedback events within a predetermined first period of time.
  • the feedback events are determined which, for example, are above a predetermined feedback threshold value.
  • the frequency of the feedback events within the predeterminable first time period is determined and forwarded to a control unit 14, which selects one of the four pre-optimized parameter sets of the feedback suppression unit 10 in accordance with the determined frequency.
  • the frequency of the determined feedback events within a second time duration which may for example be the time between two visits to a hearing aid acoustician, is stored in a memory unit 15 and output via an output unit 16 as required.
  • the invention can also be used for hearing devices other than hearing aids.
  • FIG. 3 shows a flow chart of the method according to the invention for setting a feedback suppression.
  • feedback events RE are determined in which the feedback suppression responds and / or in which a feedback above a predefinable feedback threshold value is detected.
  • the frequency H 1 of the feedback events RE is determined within a predefinable first time duration T 1.
  • the feedback suppression is set according to the frequency Hl of the feedback events RE.
  • pre-optimized parameter sets are used.
  • the pre-optimized parameter sets may include feedback suppression settings with a different amount of feedback reduction and different sound quality. For example, if the frequency Hl of the feedback events RE is above a certain one
  • Threshold a parameter set with a stronger feedback effect but poorer sound quality is selected. If the frequency Hl has dropped below a certain threshold, a parameter set with better sound quality but less feedback effect is selected.
  • the frequency H2 of the feedback events RE is determined within a predefinable second time period T2.
  • the frequency H2 of the feedback events RE occurring within the predeterminable second time period T2 is stored and, if necessary, output in step 105. The output is for example at a hearing care professional.

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Neurosurgery (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

L'invention concerne un procédé et un dispositif auditif (1) correspondant, pour le réglage de la suppression de la réaction. Le procédé comprend les étapes suivantes : identifier (100) des événements de réaction (RE); déterminer (101) la fréquence (H1) des événements de réaction (RE) au cours d'une première période de temps (T1) prédéterminée; et régler (102) la suppression de la réaction en fonction de la fréquence (H1) des événements de réaction (RE). Il est avantageux que le dispositif auditif puisse choisir automatiquement, en fonction de la situation de réaction, entre différents algorithmes de réaction, et ainsi atteindre un niveau optimal de qualité du son et de la réaction.
EP10724377A 2009-07-02 2010-05-28 Procédé et dispositif auditif pour le réglage de la suppression de la réaction Withdrawn EP2311273A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009031536A DE102009031536A1 (de) 2009-07-02 2009-07-02 Verfahren und Hörvorrichtung zum Einstellen einer Rückkopplungsunterdrückung
PCT/EP2010/057387 WO2011000641A1 (fr) 2009-07-02 2010-05-28 Procédé et dispositif auditif pour le réglage de la suppression de la réaction

Publications (1)

Publication Number Publication Date
EP2311273A1 true EP2311273A1 (fr) 2011-04-20

Family

ID=42537945

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10724377A Withdrawn EP2311273A1 (fr) 2009-07-02 2010-05-28 Procédé et dispositif auditif pour le réglage de la suppression de la réaction

Country Status (5)

Country Link
US (1) US20120148078A1 (fr)
EP (1) EP2311273A1 (fr)
AU (1) AU2010268295B2 (fr)
DE (1) DE102009031536A1 (fr)
WO (1) WO2011000641A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9628923B2 (en) * 2013-12-27 2017-04-18 Gn Hearing A/S Feedback suppression
EP3481085B1 (fr) * 2017-11-01 2020-09-09 Oticon A/s Détecteur de rétroaction et dispositif auditif comprenant un détecteur de rétroaction

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997023117A1 (fr) * 1995-12-20 1997-06-26 Decibel Instruments, Inc. Audiometrie electroacoustique virtuelle pour evaluation auditive sans prothese, avec simulation de prothese et avec prothese

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK1367857T3 (da) * 2002-05-30 2012-06-04 Gn Resound As Fremgangsmåde til dataregistrering i en høreprotese
US8077889B2 (en) * 2004-01-27 2011-12-13 Phonak Ag Method to log data in a hearing device as well as a hearing device
EP2986033B1 (fr) * 2005-03-29 2020-10-14 Oticon A/s Prothèse auditive permettant d'enregistrer des données et apprentissage à partir de celle-ci

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997023117A1 (fr) * 1995-12-20 1997-06-26 Decibel Instruments, Inc. Audiometrie electroacoustique virtuelle pour evaluation auditive sans prothese, avec simulation de prothese et avec prothese

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2011000641A1 *

Also Published As

Publication number Publication date
AU2010268295B2 (en) 2014-07-10
AU2010268295A1 (en) 2011-01-06
WO2011000641A1 (fr) 2011-01-06
DE102009031536A1 (de) 2011-01-13
US20120148078A1 (en) 2012-06-14

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