EP1333700A2 - Verfahren zur Frequenzunsetzung in einem Hörgerät und ein solches Hörgerät - Google Patents
Verfahren zur Frequenzunsetzung in einem Hörgerät und ein solches Hörgerät Download PDFInfo
- Publication number
- EP1333700A2 EP1333700A2 EP03005047A EP03005047A EP1333700A2 EP 1333700 A2 EP1333700 A2 EP 1333700A2 EP 03005047 A EP03005047 A EP 03005047A EP 03005047 A EP03005047 A EP 03005047A EP 1333700 A2 EP1333700 A2 EP 1333700A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- frequency
- transposition
- function
- hearing device
- frequency transposition
- 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- Withdrawn
Links
- 230000017105 transposition Effects 0.000 title claims abstract description 71
- 230000013707 sensory perception of sound Effects 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 30
- 230000006870 function Effects 0.000 claims abstract description 34
- 238000001228 spectrum Methods 0.000 claims abstract description 23
- 230000001131 transforming effect Effects 0.000 claims abstract description 6
- 230000008447 perception Effects 0.000 claims description 12
- 230000009466 transformation Effects 0.000 claims description 12
- 230000002194 synthesizing effect Effects 0.000 claims description 3
- 208000032041 Hearing impaired Diseases 0.000 abstract description 5
- 230000006835 compression Effects 0.000 description 30
- 238000007906 compression Methods 0.000 description 30
- 230000005236 sound signal Effects 0.000 description 6
- 230000003595 spectral effect Effects 0.000 description 5
- 208000016354 hearing loss disease Diseases 0.000 description 4
- 239000011295 pitch Substances 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 206010011878 Deafness Diseases 0.000 description 2
- 206010011891 Deafness neurosensory Diseases 0.000 description 2
- 208000009966 Sensorineural Hearing Loss Diseases 0.000 description 2
- 230000003321 amplification Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 231100000888 hearing loss Toxicity 0.000 description 2
- 230000010370 hearing loss Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 231100000879 sensorineural hearing loss Toxicity 0.000 description 2
- 208000023573 sensorineural hearing loss disease Diseases 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 240000006409 Acacia auriculiformis Species 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 210000003027 ear inner Anatomy 0.000 description 1
- 210000000959 ear middle Anatomy 0.000 description 1
- 210000005069 ears Anatomy 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 210000000867 larynx Anatomy 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
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
- H04R25/35—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception using translation techniques
- H04R25/353—Frequency, e.g. frequency shift or compression
-
- 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
- G10L21/0316—Speech enhancement, e.g. noise reduction or echo cancellation by changing the amplitude
- G10L21/0364—Speech enhancement, e.g. noise reduction or echo cancellation by changing the amplitude for improving intelligibility
-
- 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
- G10L21/06—Transformation of speech into a non-audible representation, e.g. speech visualisation or speech processing for tactile aids
- G10L2021/065—Aids for the handicapped in understanding
-
- 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
- H04R2225/43—Signal processing in hearing aids to enhance the speech intelligibility
Definitions
- the present invention relates to a method for frequency transposition in a hearing device according to the pre-characterizing part of claim 1, to a hearing device according to the pre-characterizing part of claim 7 as well as to a use of the method for a binaural hearing device.
- frequency shifting The many techniques for frequency transposition reported previously can be subdivided into three broad types: frequency shifting, frequency compression, and reducing the playback speed of recorded audio signals while discarding portions of the signal in order to preserve the original duration.
- frequency-transposing hearing instruments available commercially are those manufactured by AVR Ltd., a company based in Israel and Minnesota, USA (see http://www.avrsono.com ).
- the reported-algorithm multiplies each frequency bin by a constant factor (less than 1) to produce the desired output signal in the frequency domain.
- a constant factor less than 1
- Data loss resulting from this compression of the spectrum is minimized by linear interpolation across frequencies.
- the output signal is then converted back into the time domain by means of an inverse FFT (IFFT).
- IFFT inverse FFT
- a feature extraction and signal resynthesis procedure and system based on a vocoder have been described by Thomson CSF, Paris in EP-1 006 511. Information about pitch, voicing, energy, and spectral shape is extracted from the input signal. These features are modified (e.g. by compressing the formant frequencies in the frequency domain) and then used for synthesis of the output signal by means of a vocoder (i.e. a relatively efficient electronic or computational device or technique for synthesizing speech signals).
- a vocoder i.e. a relatively efficient electronic or computational device or technique for synthesizing speech signals.
- a very similar approach has also been described by Strong and Palmer in US-4 051 331. Their signal synthesis is also based on modified speech features. However, it synthesizes voiced components using tones, and unvoiced components using narrow-band noises. Thus, these techniques are spectrum-destroying rather than spectrum-preserving.
- a phase vocoder system for frequency transposition is described in a paper by H. J. McDermott and M. R. Dean ("Speech perception with steeply sloping hearing loss", British Journal of Audiology, vol 34, pp 353-361, December 2000).
- a non-real-time implementation is disclosed using a computer program. Digitally recorded speech signals were low pass filtered, down sampled and windowed, and then processed by a FFT. The phase values from successive FFTs were used to estimate a more precise frequency for each FFT bin, which was used to tune an oscillator corresponding to each FFT bin. Frequency lowering was achieved by multiplying the frequency estimates for each FFT-bin by a constant factor.
- a problem with each of the above feature-extraction and resynthesis processing schemes is that it is technically extremely difficult to obtain reliable estimates of speech features (such as fundamental frequency and voicing) in a wearable, real-time hearing instrument, especially in unfavorable listening conditions such as when noise or reverberation is present.
- EP-0 054 450 describes the transposition and amplification of two or three different bands of the frequency spectrum into lower-frequency bands within the audible range.
- the number of "image" bands equals the number of original bands.
- the frequency compression ratio can be different across bands, but is constant within each band.
- the image bands are arranged contiguously, and transposed to frequencies above 500 Hz. In order to free this part of the spectrum for the image bands, the amplification for frequencies between 500 and 1000 Hz decreases gradually with increasing frequency. Frequencies below 500 Hz in the original signal are amplified with a constant gain.
- the input signal is subjected to adaptive noise canceling before filtering into at least two pass-bands takes place. Frequency compression is then carried out in at least one frequency band.
- frequency transposition is a potential means for providing profoundly hearing impaired patients with signals in their residual range.
- the process of frequency transposition is illustrated in Fig. 1, wherein the magnitude spectrum
- a frequency band FB is transposed by a frequency transposition function to obtain a transposed magnitude spectrum
- linear frequency transposition (as it is shown in Figs. 3 and 4 by the dashed line), or linear frequency transposition applied to only parts of the spectrum of a acoustic signal, is the only meaningful scheme since all nonlinear frequency transposition methods of the state of the art distort the signal in such a manner that potential subjects reject the processing.
- the application of linear frequency transposition is however limited in that in order to preserve a reasonable intelligibility of the speech signal, the frequency span of the compressed signal should not be less that 60 to 70% of the original bandwidth.
- Nonlinear transposition schemes were not considered so far because the distortion of the harmonic relationship in lower frequencies has a detrimental effect on vowel recognition and is therefore totally unacceptable.
- Fig. 2 shows a simplified block diagram of a digital hearing device according to the present invention comprising a microphone 1, an analog-to-digital converter unit 2, a transformation unit 3, a signal processing unit 4, an inverse transformation unit 5, a digital-to-analog converter unit 5 and a loudspeaker 7, also called receiver.
- the invention is not only suitable for implementation in a digital hearing device but can also readily be implemented in an analog hearing device. In the latter case, the analog-to-digital converter unit 2 and the digital-to-analog converter unit 6 are not necessary.
- a so called VOCODER is used in which the output signal is synthesized.
- VOCODER for further information regarding the functioning of a VOCODER, reference is made to H. J. McDermott and M. R. Dean ("Speech perception with steeply sloping hearing loss", British Journal of Audiology, vol 34, pp 353-361, December 2000).
- an implementation of the invention is not only limited to conventional hearing devices, such as BTE-(behind the ear), CIC-(completely in the canal) or ITE-(in the ear) hearing devices.
- An implementation in implantable devices is also possible.
- a transducer is used instead of the loudspeaker 7 which transducer is either operationally connected to the signal processing unit 4, or to the inverse transformation unit 5, or to the digital-to-analog converter unit 6, and which transducer is made for direct transmitting acoustical information to the middle or inner ear of the patient.
- the sampled acoustic signal s(n) is transformed into the frequency domain by an appropriate frequency transformation function in order to obtain the discrete spectrum S(m).
- a Fast Fourier Transformation is applied in the transformation unit 3.
- a frequency transposition is being applied to the spectrum S(m) in order to obtain a transposed spectrum S'(m'), whereby the frequency transposition is being defined by a nonlinear frequency transposition function.
- the nonlinear frequency transposition function has a perception-based scale, such as the Bark, ERB or SPINC scale.
- Bark reference is made to E. Zwicker and H. Fastl in "Psychoacoustics - Facts and Models” (2nd edition, Springer, 1999)
- ERB reference is made to B. C. J. Moore and B. R. Glasberg in "Suggested formulae for calculating auditory-filter bandwidths and excitation patterns" (J. Acoust. Soc. Am., Vol. 74, no. 3, pp.
- Figs. 3 and 4 show different frequency transposition functions and transposition factors, wherein the horizontal axis represents the input frequency f and the vertical axis represents the corresponding output frequency f'.
- the graphs drawn by a dotted line represent different frequency transposition functions according to the present invention.
- the graphs drawn by solid and dashed lines are for comparison and show corresponding state of the art frequency transposition functions.
- the frequency transposition function is stored in a look-up table which is provided in the signal processing unit 4, or which look-up table can be easily accessed by the signal processing unit 4.
Landscapes
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Human Computer Interaction (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Quality & Reliability (AREA)
- Computational Linguistics (AREA)
- Multimedia (AREA)
- General Health & Medical Sciences (AREA)
- Neurosurgery (AREA)
- Otolaryngology (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03005047A EP1333700A3 (de) | 2003-03-06 | 2003-03-06 | Verfahren zur Frequenzunsetzung in einem Hörgerät und ein solches Hörgerät |
EP20040005270 EP1441562B1 (de) | 2003-03-06 | 2004-03-05 | Verfahren zur Frequenzumsetzung und Nutzung des Verfahrens in einem Hörgerät und einer Kommunikationsvorrichtung |
DK04005270T DK1441562T3 (da) | 2003-03-06 | 2004-03-05 | Fremgangsmåde til frekvenstransposition og anvendelse af fremgangsmåden i et høreapparat og et kommunikationsapparat |
DE200460026233 DE602004026233D1 (de) | 2003-03-06 | 2004-03-05 | Verfahren zur Frequenzumsetzung und Nutzung des Verfahrens in einem Hörgerät und einer Kommunikationsvorrichtung |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03005047A EP1333700A3 (de) | 2003-03-06 | 2003-03-06 | Verfahren zur Frequenzunsetzung in einem Hörgerät und ein solches Hörgerät |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1333700A2 true EP1333700A2 (de) | 2003-08-06 |
EP1333700A3 EP1333700A3 (de) | 2003-09-17 |
Family
ID=8185870
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03005047A Withdrawn EP1333700A3 (de) | 2003-03-06 | 2003-03-06 | Verfahren zur Frequenzunsetzung in einem Hörgerät und ein solches Hörgerät |
EP20040005270 Expired - Lifetime EP1441562B1 (de) | 2003-03-06 | 2004-03-05 | Verfahren zur Frequenzumsetzung und Nutzung des Verfahrens in einem Hörgerät und einer Kommunikationsvorrichtung |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20040005270 Expired - Lifetime EP1441562B1 (de) | 2003-03-06 | 2004-03-05 | Verfahren zur Frequenzumsetzung und Nutzung des Verfahrens in einem Hörgerät und einer Kommunikationsvorrichtung |
Country Status (3)
Country | Link |
---|---|
EP (2) | EP1333700A3 (de) |
DE (1) | DE602004026233D1 (de) |
DK (1) | DK1441562T3 (de) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1661434A1 (de) * | 2003-08-11 | 2006-05-31 | Vast Audio Pty Ltd | Klangverbesserung für hörbehinderte zuhörer |
DE102008049466A1 (de) * | 2008-09-29 | 2010-04-08 | Siemens Medical Instruments Pte. Ltd. | Verfahren zum Betrieb einer Hörhilfe und Hörhilfe |
DE102008064382A1 (de) * | 2008-12-22 | 2010-07-08 | Siemens Medical Instruments Pte. Ltd. | Hörvorrichtung mit Transpositionsmöglichkeit und entsprechendes Verfahren |
EP2252081A2 (de) | 2009-05-14 | 2010-11-17 | Siemens Medical Instruments Pte. Ltd. | Binaurale Hörvorrichtung und Verfahren zum Betrieb einer binauralen Hörvorrichtung mit Frequenzverzerrung |
AU2004201374B2 (en) * | 2004-04-01 | 2010-12-23 | Phonak Ag | Audio amplification apparatus |
EP2372707A1 (de) | 2010-03-15 | 2011-10-05 | Svox AG | Adaptive Spektralumwandlung für akustische Sprechsignale |
EP2375782A1 (de) * | 2010-04-09 | 2011-10-12 | Oticon A/S | Verbesserungen in der Geräuschwahrnehmung mittels Frequenztransposition durch Verschiebung des Tonumfangs |
DE102010041653A1 (de) | 2010-09-29 | 2012-03-29 | Siemens Medical Instruments Pte. Ltd. | Verfahren und Vorrichtung zur Frequenzkompression mit selektiver Frequenzverschiebung |
EP2337378A3 (de) * | 2009-12-16 | 2013-01-09 | Siemens Medical Instruments Pte. Ltd. | Verfahren zur Frequenztransposition bei einem Hörhilfegerät sowie Hörhilfegerät |
US9179222B2 (en) | 2013-06-06 | 2015-11-03 | Cochlear Limited | Signal processing for hearing prostheses |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU2005201813B2 (en) * | 2005-04-29 | 2011-03-24 | Phonak Ag | Sound processing with frequency transposition |
CN101208991B (zh) | 2005-06-27 | 2012-01-11 | 唯听助听器公司 | 具有加强的高频再现功能的助听器以及处理声频信号的方法 |
WO2007045240A2 (en) * | 2005-10-18 | 2007-04-26 | Widex A/S | Equipment for programming a hearing aid and a hearing aid |
DK2177054T3 (en) | 2007-07-31 | 2014-05-26 | Phonak Ag | Method for adjusting a hearing device with frequency transposition and corresponding arrangement |
DE102010041643B4 (de) | 2010-09-29 | 2014-01-30 | Siemens Medical Instruments Pte. Ltd. | Hörhilfegerät zur Frequenzkompression |
DE102011006148B4 (de) * | 2010-11-04 | 2015-01-08 | Siemens Medical Instruments Pte. Ltd. | Kommunikationssystem mit Telefon und Hörvorrichtung sowie Übertragungsverfahren |
DE102011006515A1 (de) | 2011-03-31 | 2012-10-04 | Siemens Medical Instruments Pte. Ltd. | Verfahren zur Verbesserung der Sprachverständlichkeit mit einem Hörhilfegerät sowie Hörhilfegerät |
DE102011006511B4 (de) | 2011-03-31 | 2016-07-14 | Sivantos Pte. Ltd. | Hörhilfegerät sowie Verfahren zum Betrieb eines Hörhilfegeräts |
DE102011006472B4 (de) | 2011-03-31 | 2013-08-14 | Siemens Medical Instruments Pte. Ltd. | Verfahren zur Verbesserung der Sprachverständlichkeit mit einem Hörhilfegerät sowie Hörhilfegerät |
WO2012175134A1 (en) * | 2011-06-23 | 2012-12-27 | Phonak Ag | Method for operating a hearing device as well as a hearing device |
US10129659B2 (en) | 2015-05-08 | 2018-11-13 | Doly International AB | Dialog enhancement complemented with frequency transposition |
US11184715B1 (en) | 2020-10-05 | 2021-11-23 | Sonova Ag | Hearing devices and methods for implementing an adaptively adjusted cut-off frequency |
US11962980B2 (en) | 2021-01-28 | 2024-04-16 | Sonova Ag | Hearing evaluation systems and methods implementing a spectro-temporally modulated audio signal |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0054450A1 (de) * | 1980-11-28 | 1982-06-23 | Jean-Claude Lafon | Hörhilfsgeräte |
US4982434A (en) * | 1989-05-30 | 1991-01-01 | Center For Innovative Technology | Supersonic bone conduction hearing aid and method |
WO1999014986A1 (en) * | 1997-09-19 | 1999-03-25 | University Of Iowa Research Foundation | Hearing aid with proportional frequency compression and shifting of audio signals |
WO2000075920A1 (en) * | 1999-06-03 | 2000-12-14 | Telefonaktiebolaget Lm Ericsson (Publ) | A method of improving the intelligibility of a sound signal, and a device for reproducing a sound signal |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AT398670B (de) * | 1991-11-13 | 1995-01-25 | Viennatone Gmbh | Verfahren zur verschiebung der frequenz von signalen |
FR2706103B1 (fr) * | 1993-06-03 | 1997-01-31 | Ericsson Ge Mobile Communicat | Appareil radiotéléphonique. |
US5479522A (en) * | 1993-09-17 | 1995-12-26 | Audiologic, Inc. | Binaural hearing aid |
-
2003
- 2003-03-06 EP EP03005047A patent/EP1333700A3/de not_active Withdrawn
-
2004
- 2004-03-05 DE DE200460026233 patent/DE602004026233D1/de not_active Expired - Lifetime
- 2004-03-05 DK DK04005270T patent/DK1441562T3/da active
- 2004-03-05 EP EP20040005270 patent/EP1441562B1/de not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0054450A1 (de) * | 1980-11-28 | 1982-06-23 | Jean-Claude Lafon | Hörhilfsgeräte |
US4982434A (en) * | 1989-05-30 | 1991-01-01 | Center For Innovative Technology | Supersonic bone conduction hearing aid and method |
WO1999014986A1 (en) * | 1997-09-19 | 1999-03-25 | University Of Iowa Research Foundation | Hearing aid with proportional frequency compression and shifting of audio signals |
WO2000075920A1 (en) * | 1999-06-03 | 2000-12-14 | Telefonaktiebolaget Lm Ericsson (Publ) | A method of improving the intelligibility of a sound signal, and a device for reproducing a sound signal |
Non-Patent Citations (1)
Title |
---|
XUEDONG HUANG, ALEX ACERO, HSIAO-WUEN HON: "Spoken Language Processing" 2001 , PRENTICE HALL PTR , UPPER SADDLE RIVER, NEW JERSEY XP002248543 ISBN: 0-13-022616-5 * page 29, line 1 - page 36, line 8 * * |
Cited By (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1661434A4 (de) * | 2003-08-11 | 2007-08-22 | Vast Audio Pty Ltd | Klangverbesserung für hörbehinderte zuhörer |
EP1661434A1 (de) * | 2003-08-11 | 2006-05-31 | Vast Audio Pty Ltd | Klangverbesserung für hörbehinderte zuhörer |
US8351626B2 (en) | 2004-04-01 | 2013-01-08 | Phonak Ag | Audio amplification apparatus |
AU2004201374B2 (en) * | 2004-04-01 | 2010-12-23 | Phonak Ag | Audio amplification apparatus |
DE102008049466A1 (de) * | 2008-09-29 | 2010-04-08 | Siemens Medical Instruments Pte. Ltd. | Verfahren zum Betrieb einer Hörhilfe und Hörhilfe |
DE102008064382A1 (de) * | 2008-12-22 | 2010-07-08 | Siemens Medical Instruments Pte. Ltd. | Hörvorrichtung mit Transpositionsmöglichkeit und entsprechendes Verfahren |
EP2252081A2 (de) | 2009-05-14 | 2010-11-17 | Siemens Medical Instruments Pte. Ltd. | Binaurale Hörvorrichtung und Verfahren zum Betrieb einer binauralen Hörvorrichtung mit Frequenzverzerrung |
DE102009021310A1 (de) * | 2009-05-14 | 2010-12-30 | Siemens Medical Instruments Pte. Ltd. | Binaurale Hörvorrichtung und Verfahren zum Betrieb einer binauralen Hörvorrichtung mit Frequenzverzerrung |
DE102009021310B4 (de) * | 2009-05-14 | 2011-02-24 | Siemens Medical Instruments Pte. Ltd. | Binaurale Hörvorrichtung und Verfahren zum Betrieb einer binauralen Hörvorrichtung mit Frequenzverzerrung |
US8611571B2 (en) | 2009-05-14 | 2013-12-17 | Siemens Medical Instruments Pte. Ltd. | Binaural hearing apparatus and method for operating a binaural hearing apparatus with frequency distortion |
EP2337378A3 (de) * | 2009-12-16 | 2013-01-09 | Siemens Medical Instruments Pte. Ltd. | Verfahren zur Frequenztransposition bei einem Hörhilfegerät sowie Hörhilfegerät |
EP2372707A1 (de) | 2010-03-15 | 2011-10-05 | Svox AG | Adaptive Spektralumwandlung für akustische Sprechsignale |
CN102354497A (zh) * | 2010-04-09 | 2012-02-15 | 奥迪康有限公司 | 使用频率变换通过移动包络对声音感知的改进 |
EP2375782A1 (de) * | 2010-04-09 | 2011-10-12 | Oticon A/S | Verbesserungen in der Geräuschwahrnehmung mittels Frequenztransposition durch Verschiebung des Tonumfangs |
US8949113B2 (en) | 2010-04-09 | 2015-02-03 | Oticon A/S | Sound perception using frequency transposition by moving the envelope |
CN102354497B (zh) * | 2010-04-09 | 2015-08-12 | 奥迪康有限公司 | 使用频率变换通过移动包络对声音感知的改进 |
EP2437258A2 (de) | 2010-09-29 | 2012-04-04 | Siemens Medical Instruments Pte. Ltd. | Verfahren und Vorrichtung zur Frequenzkompression mit selektiver Frequenzverschiebung |
DE102010041653A1 (de) | 2010-09-29 | 2012-03-29 | Siemens Medical Instruments Pte. Ltd. | Verfahren und Vorrichtung zur Frequenzkompression mit selektiver Frequenzverschiebung |
EP2437258A3 (de) * | 2010-09-29 | 2013-09-04 | Siemens Medical Instruments Pte. Ltd. | Verfahren und Vorrichtung zur Frequenzkompression mit selektiver Frequenzverschiebung |
DE102010041653B4 (de) * | 2010-09-29 | 2015-04-02 | Siemens Medical Instruments Pte. Ltd. | Verfahren und Vorrichtung zur Frequenzkompression mit selektiver Frequenzverschiebung |
US9031269B2 (en) | 2010-09-29 | 2015-05-12 | Siemens Medical Instruments Pte. Ltd. | Method and device for frequency compression with selective frequency shifting |
US9179222B2 (en) | 2013-06-06 | 2015-11-03 | Cochlear Limited | Signal processing for hearing prostheses |
US9794698B2 (en) | 2013-06-06 | 2017-10-17 | Cochlear Limited | Signal processing for hearing prostheses |
Also Published As
Publication number | Publication date |
---|---|
EP1441562A3 (de) | 2007-11-21 |
EP1441562B1 (de) | 2010-03-31 |
DE602004026233D1 (de) | 2010-05-12 |
EP1333700A3 (de) | 2003-09-17 |
DK1441562T3 (da) | 2010-07-19 |
EP1441562A2 (de) | 2004-07-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7248711B2 (en) | Method for frequency transposition and use of the method in a hearing device and a communication device | |
EP1333700A2 (de) | Verfahren zur Frequenzunsetzung in einem Hörgerät und ein solches Hörgerät | |
US20040175010A1 (en) | Method for frequency transposition in a hearing device and a hearing device | |
US7343022B2 (en) | Spectral enhancement using digital frequency warping | |
US8098859B2 (en) | Methods, devices and systems using signal processing algorithms to improve speech intelligibility and listening comfort | |
EP1661434B1 (de) | Klangverbesserung für hörbehinderte zuhörer | |
JP4759052B2 (ja) | 高周波数再生が強化された補聴器および音声信号処理方法 | |
US6212496B1 (en) | Customizing audio output to a user's hearing in a digital telephone | |
EP1236377B1 (de) | Hörhilfegerät mit signalverarbeitungstechniken | |
Kates et al. | Speech intelligibility enhancement | |
CN111107478B (zh) | 一种声音增强方法及声音增强*** | |
AU2002300314B2 (en) | Apparatus And Method For Frequency Transposition In Hearing Aids | |
US20090257609A1 (en) | Method for Noise Reduction and Associated Hearing Device | |
EP2675191B1 (de) | Frequenzumsetzung in Hörhilfegeräten unter Verwendung einer zusätzlichen Spektralsynthese | |
DK2584795T3 (da) | Fremgangsmåde til bestemmelse af en kompressionskarakteristik | |
US9258655B2 (en) | Method and device for frequency compression with harmonic correction | |
Muñoz et al. | Frequency lowering processing for listeners with significant hearing loss | |
JPH07146700A (ja) | ピッチ強調方法および装置ならびに聴力補償装置 | |
US8644538B2 (en) | Method for improving the comprehensibility of speech with a hearing aid, together with a hearing aid | |
Czyzewski et al. | A method for spectral transposition of speech signal applicable in profound hearing loss | |
Marotta et al. | Comparison of two frequency lowering algorithms for digital hearing aids. | |
WO2017025107A2 (en) | Talker language, gender and age specific hearing device | |
Madhusudhanan et al. | Vlsi Based Performance Improvement in Digital Hearing Aid Using Reconfigurable Filter |
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 |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
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 SE SI SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL LT LV MK RO |
|
AK | Designated contracting states |
Kind code of ref document: A3 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 SE SI SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL LT LV MK RO |
|
17P | Request for examination filed |
Effective date: 20031129 |
|
17Q | First examination report despatched |
Effective date: 20040212 |
|
AKX | Designation fees paid |
Designated state(s): CH DE DK LI |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20040623 |