WO2001022790A2 - Method for operating a hearing-aid and a hearing aid - Google Patents
Method for operating a hearing-aid and a hearing aid Download PDFInfo
- Publication number
- WO2001022790A2 WO2001022790A2 PCT/CH2001/000007 CH0100007W WO0122790A2 WO 2001022790 A2 WO2001022790 A2 WO 2001022790A2 CH 0100007 W CH0100007 W CH 0100007W WO 0122790 A2 WO0122790 A2 WO 0122790A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hearing aid
- unit
- features
- signal
- auditory
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
- H04R25/40—Arrangements for obtaining a desired directivity characteristic
- H04R25/402—Arrangements for obtaining a desired directivity characteristic using contructional means
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2225/00—Details of deaf aids covered by H04R25/00, not provided for in any of its subgroups
- H04R2225/41—Detection or adaptation of hearing aid parameters or programs to listening situation, e.g. pub, forest
Definitions
- the present invention relates to a method for operating a hearing aid and a hearing aid.
- the hearing program can be selected either via the remote control or via a switch on the hearing aid itself. Switching between different listening programs, however, is troublesome or difficult, if not impossible, for many users. It is not always easy for experienced hearing aid users to determine which program offers the best comfort and the best speech intelligibility at which time. Automatic detection of the acoustic surrounding situation and an associated automatic switching of the hearing program in the hearing aid is therefore desirable.
- Modulation frequency analysis "(1997, DAGA 97, pages 608 to 609) and" Classification of acoustic signals based on the analysis of modulation spectra for use in digital hearing aids "(1998, DAGA 98, pages 402 to 403).
- a similar approach is also given in an article by Edwards et al. entitled “Signal-processing algorithms for a new software-based, digital hearing device” (1998, The Hearing Journal 51, pages 44 to 52) .Other possible features are the level itself or the zero crossing rate as described, for example, in HL Hirsch, “Statistical Signal Characterization” (Artech House 1992). The features previously used for audio signal analysis are therefore purely technical.
- the known methods for noise classification consisting of feature extraction and pattern recognition, have the disadvantages that, although a clear and robust identification of speech signals is fundamentally possible, several different acoustic environmental situations cannot be classified or can only be classified in an inadequate manner. Thus, it is possible with the known methods to distinguish pure speech signals from "non-speech" - ie all other acoustic environmental situations. However, this is not sufficient for an optimal listening program to be used for a current acoustic ambient situation. As a result, either the number of possible hearing programs is limited to the two automatically recognizable acoustic ambient situations, or the hearing aid wearer must recognize the uncovered acoustic ambient situations themselves and activate the associated hearing program manually.
- Pattern identification methods can generally be used for noise classification.
- So-called distance estimators, Bayes classifiers, fuzzy logic systems or neural networks are particularly suitable as pattern recognizers. Further information on the first two methods can be found in the publication "Pattern Classification and Scene Analysis” by Richard O. Duda and Peter E. Hart (John Wiley & Sons, 1973).
- neural networks reference is made to the standard work by Christopher M. Bishop with the title “Neural Networks for Pattern Recognition” (1995, Oxford University Press). Furthermore, reference is made to the following publications: Ostendorf et. al. .
- the present invention is therefore based on the object of initially specifying a method for operating a hearing aid which is considerably more robust and precise than the known methods.
- the invention is based on an extraction of signal features and a subsequent separation of different noise sources as well as an identification of different noises, whereby Hidden Markov models are used in the identification phase in order to detect a current environmental situation or noises and / or a speaker or his words. This is the first time that dynamic properties of the classes of interest are taken into account, which significantly improves the accuracy of the method according to the invention in all areas of application, i.e. in the detection of the current environmental situation or noises as well as in the detection of a speaker and individual words.
- auditory-based features are taken into account in the extraction phase. These auditory-based features are preferably determined using methods of Auditory Scene Analysis (ASA) determined.
- ASA Auditory Scene Analysis
- the features are grouped in the extraction phase with the help of the design principles, regardless of the context or depending on the context.
- the invention is explained in more detail below with reference to a drawing, for example.
- the single figure shows a block diagram of a hearing aid in which the method according to the invention is implemented.
- hearing aid means both so-called hearing aids, which are used to correct a person's hearing impairment, and all other acoustic communication systems, such as radio devices ,
- the hearing device 1 initially consists of two electro-acoustic transducers 2a, 2b and 6, namely one or more microphones 2a, 2b and a loudspeaker 6 - also referred to as a listener.
- An actual main component of a hearing aid 1 is a transmission unit denoted by 4, in which the signal modifications — in the case of a hearing aid — are made to suit the user of the hearing aid 1.
- the operations carried out in the transmission unit 4 are not only of the type specified
- Target function of the hearing aid 1 dependent are also chosen in particular depending on the current acoustic environment.
- z. B. already offered hearing aids, in which the device wearer can make a manual switch between different hearing programs on certain acoustic environmental situations are adapted.
- Hearing aids are also known in which the acoustic ambient situation is recognized automatically.
- European patent specifications with the publication numbers EP-B1-0 732 036 and EP-AI-0 814 636 and to the US patent with the publication number US-5 604 812, and to the brochure "Claro Autoselect" from Phonak hearing systems (28148 (GB) / 0300, 1999).
- a signal analysis unit 7 and a signal identification unit 8 are provided in the hearing device 1.
- a signal analysis unit 7 and a signal identification unit 8 are provided in the hearing device 1.
- one or more analog / digital converters 3a, 3b are provided between the microphones 2a, 2b and the transmission unit 4 and a digital / analog converter 5 between the transmission unit 4 and the receiver 6.
- the signal analysis unit 7 receives the same input signal as the transmission unit. Finally, the signal identification unit 8, which is connected to the output of the signal analysis unit 7, is connected to the transmission unit 4 and to a control unit 9.
- a training unit is designated by 10, with the aid of which the determination of parameters required for the classification in the signal identification unit 8 in FIG an "off-line" operation is carried out.
- the settings of the transmission unit 4 and the control unit 9 determined by the signal analysis unit 7 and the signal identification unit 8 can be overwritten by the user by means of a user input unit 11.
- a preferred embodiment of the method according to the invention is based on the fact that characteristic features are extracted from an acoustic signal in an extraction phase, whereby instead of or in addition to technically based features - such as. B. the previously mentioned zero crossing rates, temporal level fluctuations, different modulation frequencies, or the level, the spectral focus, the amplitude distribution, etc. - also auditory-based features are used. These auditory-based features are determined with the help of Auditory Scene Analysis (ASA) and include in particular the loudness, the spectral shape (timbre), the harmonic structure (pitch), common settling and decay times (on- / offsets), coherent amplitude modulations , coherent frequency modulations, coherent frequency transitions, binaural effects, etc. B. in the works of A. Bregman, "Auditory Scene Analysis” (MIT Press, 1990) and W. A. Yost,
- ASA Auditory Scene Analysis
- the characterization of the tonality of the acoustic signal by analyzing the harmonic structure is given here, which is particularly suitable for the identification of tonal signals, such as speech and music.
- the features are further grouped in the signal analysis unit 7 by means of shape principles.
- the principles of Gestalt theory in which qualitative properties - such as continuity, closeness, similarity, common fate,
- the grouping can - like incidentally also the feature extraction in the extraction phase - either be carried out context-independently, ie without adding additional knowledge (so-called "primitive” grouping), or it can be context-dependent in the sense of human auditory perception using additional information or hypotheses about the signal content occur (so-called “schema-based” grouping).
- the context-dependent grouping is therefore adapted to the respective acoustic situation.
- the second aspect of the inventive method described here relates to pattern recognition or signal identification, which is carried out in the identification phase.
- the method of the Hidden Markov Models is used in the signal identification unit 8 for automatic classification of the acoustic environmental situation. This means that changes in the calculated characteristics over time can also be used for classification. Accordingly, dynamic and not only static properties of the environmental situations to be recognized or. Noise classes are taken into account. It is also possible to combine HMMs with other classifiers, e.g. B. in a multi-stage recognition process, to identify the acoustic environment.
- the second aspect of the method mentioned ie the use of hidden Markov models, is suitable, ideal for determining a current acoustic environment or noise.
- the recognition of a speaker as well as the detection of individual words or phrases can also be achieved with extremely good results, even on their own, ie without taking auditory-based features into account in the extraction phase or even without using ASA. (Auditory Scene Analysis) methods, which is used in a further embodiment to determine characteristic features.
- the output signal of the signal identification unit 8 thus contains information about the type of acoustic environment (acoustic environment situation). This information is applied to the transmission unit 4, in which the most suitable program or the most suitable parameter set for the identified environmental situation is selected for the transmission. At the same time, the information of the control unit 9 determined in the signal identification 8 is applied for further functions where, depending on the situation, any function - e.g. an acoustic signal - can be triggered.
- a complex procedure for determining the parameters necessary for the classification is necessary. This parameter determination is therefore preferably carried out in an "off-line" process, specifically for each class.
- the actual identification of various acoustic environmental situations requires only little storage space and little computing capacity. It is therefore proposed to provide a training unit 9 which has sufficient computing power for parameter determination and which can be connected to the hearing aid 1 by suitable means for the purpose of data transfer.
- suitable means can include, for example, a simple wire connection corresponding plugs.
- Hearing aid users often also have the desire for the automatic detection of the environmental situation described above and the associated automatic detection
- an input unit 11 is provided with which automatic reactions or automatic program selection can be overwritten.
- Such an input unit 11 can, for. B. a switch on the hearing aid 1 or
- Remote control which is operated by the user.
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- 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
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002400089A CA2400089A1 (en) | 2001-01-05 | 2001-01-05 | Method for operating a hearing-aid and a hearing aid |
JP2001526020A JP2004500750A (en) | 2001-01-05 | 2001-01-05 | Hearing aid adjustment method and hearing aid to which this method is applied |
DK01900013T DK1247425T3 (en) | 2001-01-05 | 2001-01-05 | Method of operating a hearing aid and a hearing aid |
PCT/CH2001/000007 WO2001022790A2 (en) | 2001-01-05 | 2001-01-05 | Method for operating a hearing-aid and a hearing aid |
EP01900013A EP1247425B1 (en) | 2001-01-05 | 2001-01-05 | Method for operating a hearing-aid and a hearing aid |
DE50114066T DE50114066D1 (en) | 2001-01-05 | 2001-01-05 | METHOD FOR OPERATING A HEARING DEVICE AND A HEARING DEVICE |
AU2001221398A AU2001221398A1 (en) | 2000-07-12 | 2001-01-05 | Method for operating a hearing-aid and a hearing aid |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/CH2001/000007 WO2001022790A2 (en) | 2001-01-05 | 2001-01-05 | Method for operating a hearing-aid and a hearing aid |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2001022790A2 true WO2001022790A2 (en) | 2001-04-05 |
WO2001022790A3 WO2001022790A3 (en) | 2002-04-18 |
Family
ID=4358166
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CH2001/000007 WO2001022790A2 (en) | 2000-07-12 | 2001-01-05 | Method for operating a hearing-aid and a hearing aid |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1247425B1 (en) |
JP (1) | JP2004500750A (en) |
CA (1) | CA2400089A1 (en) |
DE (1) | DE50114066D1 (en) |
DK (1) | DK1247425T3 (en) |
WO (1) | WO2001022790A2 (en) |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002005591A2 (en) * | 2001-11-09 | 2002-01-17 | Phonak Ag | Method for operating a hearing device and hearing device |
EP1320281A2 (en) | 2003-03-07 | 2003-06-18 | Phonak Ag | Binaural hearing device and method for controlling a such a hearing device |
EP1326478A2 (en) | 2003-03-07 | 2003-07-09 | Phonak Ag | Method for producing control signals, method of controlling signal transfer and a hearing device |
US6912289B2 (en) | 2003-10-09 | 2005-06-28 | Unitron Hearing Ltd. | Hearing aid and processes for adaptively processing signals therein |
EP1653773A2 (en) | 2005-08-23 | 2006-05-03 | Phonak Ag | Method for operating a hearing aid and hearing aid |
EP1858292A1 (en) | 2006-05-16 | 2007-11-21 | Phonak AG | Hearing device and method of operating a hearing device |
EP1670285A3 (en) * | 2004-12-09 | 2008-08-20 | Phonak Ag | Method to adjust parameters of a transfer function of a hearing device as well as a hearing device |
DE102007056221A1 (en) * | 2007-11-27 | 2009-05-28 | Siemens Ag Österreich | Method for speech recognition |
US7653205B2 (en) | 2004-10-19 | 2010-01-26 | Phonak Ag | Method for operating a hearing device as well as a hearing device |
US7680291B2 (en) | 2005-08-23 | 2010-03-16 | Phonak Ag | Method for operating a hearing device and a hearing device |
WO2011027004A2 (en) | 2010-12-20 | 2011-03-10 | Phonak Ag | Method for operating a hearing device and a hearing device |
EP2317777A1 (en) | 2006-12-13 | 2011-05-04 | Phonak Ag | Method for operating a hearing device and a hearing device |
US7957548B2 (en) | 2006-05-16 | 2011-06-07 | Phonak Ag | Hearing device with transfer function adjusted according to predetermined acoustic environments |
US8027495B2 (en) | 2003-03-07 | 2011-09-27 | Phonak Ag | Binaural hearing device and method for controlling a hearing device system |
US8111848B2 (en) | 2003-03-07 | 2012-02-07 | Phonak Ag | Hearing aid with acoustical signal direction of arrival control |
US8249284B2 (en) | 2006-05-16 | 2012-08-21 | Phonak Ag | Hearing system and method for deriving information on an acoustic scene |
US8873780B2 (en) | 2010-05-12 | 2014-10-28 | Phonak Ag | Hearing system and method for operating the same |
US9026821B2 (en) | 2008-02-01 | 2015-05-05 | Cochlear Limited | Optimizing power consumption of a digital circuit |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103379418A (en) * | 2003-06-24 | 2013-10-30 | Gn瑞声达A/S | A binaural hearing aid system with coordinated sound processing |
JP5069696B2 (en) | 2006-03-03 | 2012-11-07 | ジーエヌ リザウンド エー/エス | Automatic switching between omnidirectional and directional microphone modes of hearing aids |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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EP0681411A1 (en) * | 1994-05-06 | 1995-11-08 | Siemens Audiologische Technik GmbH | Programmable hearing aid |
EP0881625A2 (en) * | 1997-05-27 | 1998-12-02 | AT&T Corp. | Multiple models integration for multi-environment speech recognition |
US6002776A (en) * | 1995-09-18 | 1999-12-14 | Interval Research Corporation | Directional acoustic signal processor and method therefor |
WO2001076321A1 (en) * | 2000-04-04 | 2001-10-11 | Gn Resound A/S | A hearing prosthesis with automatic classification of the listening environment |
-
2001
- 2001-01-05 JP JP2001526020A patent/JP2004500750A/en active Pending
- 2001-01-05 DE DE50114066T patent/DE50114066D1/en not_active Expired - Lifetime
- 2001-01-05 CA CA002400089A patent/CA2400089A1/en not_active Abandoned
- 2001-01-05 DK DK01900013T patent/DK1247425T3/en active
- 2001-01-05 EP EP01900013A patent/EP1247425B1/en not_active Expired - Lifetime
- 2001-01-05 WO PCT/CH2001/000007 patent/WO2001022790A2/en active IP Right Grant
Patent Citations (4)
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EP0681411A1 (en) * | 1994-05-06 | 1995-11-08 | Siemens Audiologische Technik GmbH | Programmable hearing aid |
US6002776A (en) * | 1995-09-18 | 1999-12-14 | Interval Research Corporation | Directional acoustic signal processor and method therefor |
EP0881625A2 (en) * | 1997-05-27 | 1998-12-02 | AT&T Corp. | Multiple models integration for multi-environment speech recognition |
WO2001076321A1 (en) * | 2000-04-04 | 2001-10-11 | Gn Resound A/S | A hearing prosthesis with automatic classification of the listening environment |
Non-Patent Citations (1)
Title |
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MELLINGER D K: "Feature-map methods for extracting sound frequency modulation" SIGNALS, SYSTEMS AND COMPUTERS, 1991. 1991 CONFERENCE RECORD OF THE TWENTY-FIFTH ASILOMAR CONFERENCE ON PACIFIC GROVE, CA, USA 4-6 NOV. 1991, LOS ALAMITOS, CA, USA,IEEE COMPUT. SOC, US, 4. November 1991 (1991-11-04), Seiten 795-799, XP010026410 ISBN: 0-8186-2470-1 * |
Cited By (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002005591A2 (en) * | 2001-11-09 | 2002-01-17 | Phonak Ag | Method for operating a hearing device and hearing device |
WO2002005591A3 (en) * | 2001-11-09 | 2002-12-19 | Phonak Ag | Method for operating a hearing device and hearing device |
US7925034B2 (en) | 2001-11-09 | 2011-04-12 | Phonak Ag | Method for operating a hearing device as well as a hearing device |
EP1320281A2 (en) | 2003-03-07 | 2003-06-18 | Phonak Ag | Binaural hearing device and method for controlling a such a hearing device |
EP1326478A2 (en) | 2003-03-07 | 2003-07-09 | Phonak Ag | Method for producing control signals, method of controlling signal transfer and a hearing device |
US8111848B2 (en) | 2003-03-07 | 2012-02-07 | Phonak Ag | Hearing aid with acoustical signal direction of arrival control |
US7286672B2 (en) | 2003-03-07 | 2007-10-23 | Phonak Ag | Binaural hearing device and method for controlling a hearing device system |
US8027495B2 (en) | 2003-03-07 | 2011-09-27 | Phonak Ag | Binaural hearing device and method for controlling a hearing device system |
US6912289B2 (en) | 2003-10-09 | 2005-06-28 | Unitron Hearing Ltd. | Hearing aid and processes for adaptively processing signals therein |
US7653205B2 (en) | 2004-10-19 | 2010-01-26 | Phonak Ag | Method for operating a hearing device as well as a hearing device |
US7995781B2 (en) | 2004-10-19 | 2011-08-09 | Phonak Ag | Method for operating a hearing device as well as a hearing device |
EP1670285A3 (en) * | 2004-12-09 | 2008-08-20 | Phonak Ag | Method to adjust parameters of a transfer function of a hearing device as well as a hearing device |
EP1653773A2 (en) | 2005-08-23 | 2006-05-03 | Phonak Ag | Method for operating a hearing aid and hearing aid |
US7680291B2 (en) | 2005-08-23 | 2010-03-16 | Phonak Ag | Method for operating a hearing device and a hearing device |
US7957548B2 (en) | 2006-05-16 | 2011-06-07 | Phonak Ag | Hearing device with transfer function adjusted according to predetermined acoustic environments |
US8249284B2 (en) | 2006-05-16 | 2012-08-21 | Phonak Ag | Hearing system and method for deriving information on an acoustic scene |
EP1858292A1 (en) | 2006-05-16 | 2007-11-21 | Phonak AG | Hearing device and method of operating a hearing device |
US8594337B2 (en) | 2006-12-13 | 2013-11-26 | Phonak Ag | Method for operating a hearing device and a hearing device |
EP2317777A1 (en) | 2006-12-13 | 2011-05-04 | Phonak Ag | Method for operating a hearing device and a hearing device |
DE102007056221A1 (en) * | 2007-11-27 | 2009-05-28 | Siemens Ag Österreich | Method for speech recognition |
DE102007056221B4 (en) * | 2007-11-27 | 2009-07-09 | Siemens Ag Österreich | Method for speech recognition |
EP2068305A1 (en) | 2007-11-27 | 2009-06-10 | Siemens AG Österreich | Speech recognition method |
US9026821B2 (en) | 2008-02-01 | 2015-05-05 | Cochlear Limited | Optimizing power consumption of a digital circuit |
US8873780B2 (en) | 2010-05-12 | 2014-10-28 | Phonak Ag | Hearing system and method for operating the same |
WO2011027004A2 (en) | 2010-12-20 | 2011-03-10 | Phonak Ag | Method for operating a hearing device and a hearing device |
US9363612B2 (en) | 2010-12-20 | 2016-06-07 | Sonova Ag | Method for operating a hearing device and a hearing device |
Also Published As
Publication number | Publication date |
---|---|
CA2400089A1 (en) | 2001-04-05 |
DE50114066D1 (en) | 2008-08-14 |
WO2001022790A3 (en) | 2002-04-18 |
EP1247425B1 (en) | 2008-07-02 |
DK1247425T3 (en) | 2008-10-27 |
EP1247425A2 (en) | 2002-10-09 |
JP2004500750A (en) | 2004-01-08 |
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