WO2000075920A1 - Procede permettant d'ameliorer l'intelligibilite d'un signal sonore, et dispositif de reproduction d'un signal sonore - Google Patents

Procede permettant d'ameliorer l'intelligibilite d'un signal sonore, et dispositif de reproduction d'un signal sonore Download PDF

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Publication number
WO2000075920A1
WO2000075920A1 PCT/SE2000/001100 SE0001100W WO0075920A1 WO 2000075920 A1 WO2000075920 A1 WO 2000075920A1 SE 0001100 W SE0001100 W SE 0001100W WO 0075920 A1 WO0075920 A1 WO 0075920A1
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WIPO (PCT)
Prior art keywords
signal
sound
sound signal
additional
signals
Prior art date
Application number
PCT/SE2000/001100
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English (en)
Inventor
Alberto JIMENEZ-FELTSTRÖM
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Telefonaktiebolaget Lm Ericsson (Publ)
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 Telefonaktiebolaget Lm Ericsson (Publ) filed Critical Telefonaktiebolaget Lm Ericsson (Publ)
Priority to AU52641/00A priority Critical patent/AU5264100A/en
Publication of WO2000075920A1 publication Critical patent/WO2000075920A1/fr

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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
    • H04R25/50—Customised settings for obtaining desired overall acoustical characteristics
    • H04R25/505—Customised settings for obtaining desired overall acoustical characteristics using digital signal processing
    • 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
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0208—Noise filtering
    • G10L21/0216—Noise filtering characterised by the method used for estimating noise
    • G10L2021/02161—Number of inputs available containing the signal or the noise to be suppressed
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
    • G10L21/0208—Noise filtering
    • G10L21/0216—Noise filtering characterised by the method used for estimating noise
    • G10L21/0232—Processing in the frequency domain
    • 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

Definitions

  • the invention relates to a method of improving the intel ⁇ ligibility of a sound signal having a certain frequency spectrum, and wherein at least one additional sound sig ⁇ nal is generated comprising a transposition of the spectrum of the first sound signal in the frequency range. Further, the invention relates to a corresponding device.
  • Hearing deficiency generally manifests itself as a poor perception of sounds located within a certain frequency band.
  • the position and width of this frequency band vary depending on the individuals. Generally, as people become older, their sensitivity at higher frequencies decreases, and for them it is thus easier to hear speech with a lower pitch level.
  • the noise energy is concentrated in a narrow frequency band. This band might coincide with the pitch of the speech to be heard, in which case it will decrease the intelligibility of the speech considerably. If the band and the pitch do not, on the other hand, coincide, the hearing mechanism will act as an adaptive band-pass filter filtering out the undesired noisy frequency bands. Normally, therefore, a user will only have problems of understanding speech whose pitch more or less coincides with the noise frequency band. The information in speech is carried in different sound frequencies. If some of the speech information is never heard, the result will be a lower intelligibility of the speech.
  • US 4 764 957 discloses a device intended to correct individual hearing deficiencies.
  • the device comprises a band- pass filter, the central frequency and/or width of which can be adjusted to coincide with the frequency range in which the person has a poor perception of sounds.
  • the frequencies in this range are given an additional amplification in order to compensate for the decreased sensi- tivity of the person. It provides some help, but it only works when the person has at least a certain remaining sensitivity in the relevant frequency range and this is not always the case.
  • this device might also be used in the noise situation, the frequency of the noise might change during the use of the device, and in this situation the user would have to readjust the device during its use, which would be rather complicated.
  • EP 54 450 This is a hearing aid for acutely or profoundly deaf persons. Samples of acoustic signals in frequency bands such as 1500 to 2400 Hz and 4800 to 6000 Hz, which are inaudible to the deaf person, are transposed into samples in a region of lower frequency (500 to 1000 Hz) which is audible to the deaf person.
  • a corresponding, but less drastic, solution is described in an article by Ian B. Thomas and Francis E. Flavin, "The Intelligibility of Speech Transposed Downward in Frequency by One Octave, " Journal of the Audio Engineering Society, February 1970, Volume 18, Number 1, Pages 56 to 62.
  • speech is transposed down one octave in real time in order to improve the intelligibility of speech for partially deaf persons.
  • the idea is that the pitch of the speech is transposed from a frequency band within which the person has a poor perception of sounds to another frequency band in which the person has a better perception.
  • these solutions incorporating a pitch transposition have the very important drawback that the natural sound of the speaker is changed, i.e. the voice of a woman might sound like the voice of a man, or vice versa.
  • Such a change of the natu- ral sound is normally unwanted, mainly because it makes it difficult to recognize specific and well known voices, but also because people do not, generally, like to know that their own voices are distorted in this way, violating the natural sound characteristics of their speech.
  • a combined signal is generated comprising the first sound signal as well as the at least one additional sound signal, said combined signal being reproduced to a user.
  • the resulting sound signal will probably contain speech information in a frequency band in which the person has a better perception, while at the same time the natural sound of the speaker is maintained due to the fact that the original sound signal is also contained in the resulting signal.
  • the effect will be that the speech is pronounced by one or more fictive voices simultaneously with the original voice .
  • At least one of the additional signals is generated at frequencies below those of the first sig- nal, and at least one other of the additional signals at frequencies above those of the first signal.
  • This embodi ⁇ ment is advantageous in the noise situation or in cases where a hearing deficiency manifests itself as a poor perception of sounds located within a narrow frequency band.
  • an alternative embodiment is preferable, in which all the additional signals are generated at lower frequencies than the original sound signal.
  • the combined signal is generated such that the amplitude of the first sound signal is higher than the amplitude of the at least one additional sound signal,- the natural sound of the speaker is recognized more easily, while the intelligibility is still im- proved by the other signals.
  • the invention further relates to a device comprising means for reproducing a sound signal to a user, said means comprising means for receiving a first sound signal having a certain frequency spectrum, and means for generating at least one additional sound signal comprising a transposition of the spectrum of the first sound signal in the frequency range.
  • the device further comprises means for generating a combined signal comprising the first sound signal as well as the at least one additional sound signal, and means for reproducing the combined signal to the user, the intelligibility of a sound signal is improved, while it is still possible to recognize the original sound of a speaker .
  • the resulting sound signal will probably contain speech information in a frequency band in which the person has a better perception, while at the same time the natural sound of the speaker is maintained due to the fact that the original sound signal is also contained in the resulting signal.
  • the effect will be that the speech is pronounced by one or more fictive voices simultaneously with the original voice .
  • the device is adapted to generate several additional sound signals and to generate the combined signal such that it comprises each of these additional signals, the probability that at least one or some of the additional signals will be located within an area in which the person has a better perception is increased.
  • the effect will be a chorus in the background to the original voice.
  • the device is adapted to generate at least one of the additional signals at frequencies below those of the first signal, and at least one other of the additional signals at frequencies above those of the first signal.
  • This embodiment is advantageous in the noise situation or in cases where a hearing deficiency manifests itself as a poor perception of sounds located within a narrow frequency band.
  • an alternative embodiment is preferable, in which all the additional signals are generated at lower frequencies than the original sound signal.
  • the device is adapted to generate the combined signal such that the amplitude of the first sound signal is higher than the amplitudes of the additional sound signals, the natural sound of the speaker is recognized more easily, while the intelligibility is still improved by the other signals.
  • the device comprises means for regulating the amplitude of each of the additional sound signals individually, it will be easier to adapt the device to the hearing deficiency of a specific person or to the noise in an specific environment.
  • the device comprises means for disabling the means for generating the combined signal, it will be able to switch the effect on and off according to actual demand. This possibility will e.g. be useful when a user enters or leaves noisy environments.
  • the device may expediently be a cellular telephone, or, as stated in claim 12, a hearing aid.
  • figure 1 shows a device according to a first embodiment of the invention
  • figure 2 shows a sketch of a frequency spectrum for the device of figure 1
  • figure 3 shows a device according to a second embodiment of the invention
  • figure 4 shows a sketch of a frequency spectrum for the device of figure 3
  • figure 5 shows a sketch of an alternative frequency spec ⁇ trum for the device of figure 3.
  • Figure 1 shows a device according to a first embodiment of the invention.
  • An electronic signal S ⁇ n representing an original sound signal is taken to the input of an in ⁇ put circuit 1.
  • the signal S ⁇ r may be in analog or digital form.
  • a signal m analog form may be the output from a microphone, while a signal m digital form may represent received speech information m a cellular telephone.
  • the circuit of figure 1 comprises a digital signal processor, and m the case of an analog input signal, the input circuit 1 thus includes an A/D- converter .
  • the digital signal S from the circuit 1 is connected through the summation point 2 to a D/A-converter 6 m which an analog signal corresponding to the original sound signal is regenerated.
  • the output of D/A-converter 6 is connected to a loudspeaker or another sound reproducing unit 7, either directly or through an amplifier (not shown) .
  • the lower part of figure 1 shows the circuit elements used to improve the intelligibility of the sound signal m case this is needed, either because of noisy environ- ments or because of the hearing deficiency of the person listening to the loudspeaker 7.
  • the pitch transposing circuit 4 transposes the frequency spectrum of the sound signal to a frequency range different from that of the original sound signal.
  • the result is a new sound signal Si containing the same speech information as the original one, but sounding as if it was pronounced by a different per- son.
  • ⁇ sound signal is here taken to mean also the digital signal representing the sound signal .
  • the solution according to the invention is different.
  • the new signal Si is combined with the original signal S,, at the summation point 2, such that a combined signal S+ is generated.
  • the original signal component will ensure that the speaker can be recognized, while the transposed signal component will improve the intelligibility.
  • an amplifier 5 can be inserted between the pitch transposing circuit 4 and the summation point 2.
  • the gain q 1 of the amplifier 5 can be adjusted by means of a control signal ai, and it will normally be adjusted to a value less than one. In this way, the original voice will have the highest level, while the transposed voice will be heard in the background.
  • Figure 2 shows a sketch of how the frequency spectrum of the combined signal S + could look.
  • the part 14 of the spectrum corresponds to the spectrum of the original signal Sn, while the part 15 corresponds to the transposed signal S : .
  • the part 15 corresponding to the transposed signal S ⁇ is shown at frequencies lower than those of the original signal. This situation is helpful to e.g. elderly people whose sensitivity at higher frequencies is decreased.
  • the part corresponding to the transposed signal S x could alternatively be located at frequencies higher than those of the original signal.
  • the frequency transposition should be loga- rithmic (pitch scaling) instead of linear (true pitch shift) .
  • Small logarithmic frequency transpositions (a few percent) in speech are hardly noticed, i.e. both the intelligibility and the quality of the speech remain very high.
  • the transposition is increased the natural sound of the speech will change, as described above, while the intelligibility will remain high. Greater variations (about 50%) causes deterioration of speech quality as well as intelligibility and should thus be avoided.
  • the human perception is quite intolerant of linear frequency shifts.
  • a linear transposition of the frequency spectrum by even a few hertz e.g. by heterodyning
  • linear shifts of the order of 100 Hz will cause marked deterioration also in speech intelligibility.
  • pitch transposing circuit 4 Several methods of implementing the pitch transposing circuit 4 are known in the art. In pitch transposition or pitch scaling the pitch of a signal is changed without changing its length. In practical applications, however, this is often achieved by changing the length of a sound and then performing a sample rate conversion to change the pitch. The different methods will not all perform equally well on all different types of signals. The good methods will provide up to a one-octave pitch scaling, corresponding to a 200% time scaling, with no audible loss in quality.
  • One applicable method is the technique of Time Domain Harmonic Scaling (TDHS) . Since this method is well disclosed in the literature, it will only be described briefly here. In one implementation of this technique, the Short Time Autocorrelation of the signal is taken and the fundamental frequency is found by picking the maximum.
  • TDHS Time Domain Harmonic Scaling
  • the timebase is changed by copying the input to the output in an overlap-and add manner, while simultaneously incrementing the input pointer by the overlap-size minus a multiple of the fundamental frequency. This results in the input being traversed at a different speed than the original data was recorded at, while aligning to the estimated basic period.
  • FIG 3 shows an improved embodiment of the invention in which several transposed signals Si, S 2 , ..., S r , are generated, differing only in the amount of transposition.
  • Each of these signals is generated in a pitch transposing circuit 4, 9, 12 of the same type as the one described in figure 1.
  • each signal can be amplified individually in the amplifiers 5, 10, 13 and switched individually in or out by the switches 3, 8, 11.
  • the combined signal S + is now the sum of S 0 and all the transposed signals Si, S 2 , ..., S n , and the sound reproduced in the loudspeaker 7 will be the original sound in combination with a synthetic chorus of a number of different voices, each corresponding to one of the transposed signals Si, S:, ..., S r ⁇ .
  • the gain of the amplifiers 5, 10, 13 will normally be adjusted to a value less than one, such that the original voice will have the highest level while the synthetic chorus will be heard in the background. In this way it is still possible to recognize the original speaker. All the amplifiers 5, 10, 13 may be adjusted to the same gain, or they may be adjusted individually ac- cording to e.g. the hearing characteristics of a specific person.
  • Figure 4 shows a sketch of how the frequency spectrum of the combined signal S + could look in this situation.
  • the part 14 of the spectrum corresponds to the spectrum of the original signal S
  • the parts 16 and 17 correspond to the transposed signals Si, S 2 , ..., S n .
  • Some of the transposed signals 16 are transposed to frequencies lower than the frequency of the original signal, while other signals 17 are transposed to higher frequencies. This arrangement will be advantageous in cases where the hearing problem is due to noise in a specific frequency band or to poor perception of sounds located within a relatively narrow frequency band.
  • Figure 5 shows how the spectrum could look when all the transposed signals 18 are located at frequencies lower than the frequency of the original signal. This situation is helpful to e.g. elderly people whose sensitivity at higher frequencies is decreased.

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  • 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)
  • Circuit For Audible Band Transducer (AREA)

Abstract

L'invention concerne un procédé permettant d'améliorer l'intelligibilité d'un premier signal sonore (S0) ayant un certain spectre de fréquences. Ce procédé consiste à générer au moins un signal sonore additionnel (S1; S1, S2, ..., Sn), ce qui comprend la transposition du spectre du premier signal en fréquence ; à générer un signal combiné (S+) contenant le premier signal (S0) et le signal ou les signaux additionnel(s) (S1; S1, S2, ..., Sn) et à reproduire le signal combiné pour un utilisateur. Ainsi l'intelligibilité d'un signal sonore est améliorée mais on reconnaît toujours le son originel d'un locuteur. Le son naturel du locuteur est conservé puisque le signal résultant contient toujours le signal sonore original. Grâce aux signaux additionnels, le signal résultant contiendra aussi probablement des informations de parole dans une bande de fréquence dans laquelle la personne a une meilleure perception.
PCT/SE2000/001100 1999-06-03 2000-05-29 Procede permettant d'ameliorer l'intelligibilite d'un signal sonore, et dispositif de reproduction d'un signal sonore WO2000075920A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU52641/00A AU5264100A (en) 1999-06-03 2000-05-29 A method of improving the intelligibility of a sound signal, and a device for reproducing a sound signal

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9902057A SE9902057D0 (sv) 1999-06-03 1999-06-03 A Method of Improving the Intelligibility of a Sound Signal, and a Device for Reproducing a Sound Signal
SE9902057-0 1999-06-03

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1333700A2 (fr) * 2003-03-06 2003-08-06 Phonak Ag Procédé de transposition de fréquence dans une prothèse auditive et une telle prothèse auditive
GB2419071A (en) * 2004-10-06 2006-04-12 Vladimir Ivanovich Eliseev Method of sound signal restoration
US7248711B2 (en) 2003-03-06 2007-07-24 Phonak Ag Method for frequency transposition and use of the method in a hearing device and a communication device
EP1686566A3 (fr) * 2005-04-29 2009-05-13 Phonak AG Traitenment de son avec transposition de fréquence
EP2099235A2 (fr) 2008-03-06 2009-09-09 Starkey Laboratories, Inc. Transposition en fréquence par réajustement à haute fréquence de l'enveloppe spectrale pour prothèses auditives
EP2249587A2 (fr) 2009-05-06 2010-11-10 Starkey Laboratories, Inc. Transposition en fréquence par réajustement à haute fréquence de l'enveloppe spectrale pour prothèses auditives
EP2437520A1 (fr) * 2010-09-29 2012-04-04 Siemens Medical Instruments Pte. Ltd. Appareil auditif pour la compression de fréquence
EP2437522A1 (fr) * 2010-09-29 2012-04-04 Siemens Medical Instruments Pte. Ltd. Appareil auditif pour la compression de fréquence
US8787605B2 (en) 2012-06-15 2014-07-22 Starkey Laboratories, Inc. Frequency translation in hearing assistance devices using additive spectral synthesis
US8855342B2 (en) 2010-09-29 2014-10-07 Siemens Medical Instruments Pte. Ltd. Hearing aid device for frequency compression
EP3128765A1 (fr) * 2015-08-07 2017-02-08 Tain-Tzu Chang Procédé de traitement d'une bande sonore
US9843875B2 (en) 2015-09-25 2017-12-12 Starkey Laboratories, Inc. Binaurally coordinated frequency translation in hearing assistance devices
US20190362734A1 (en) * 2018-05-28 2019-11-28 Unlimiter Mfa Co., Ltd. Method for detecting ambient noise to change the playing voice frequency and sound playing device thereof
US10575103B2 (en) 2015-04-10 2020-02-25 Starkey Laboratories, Inc. Neural network-driven frequency translation

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4051331A (en) * 1976-03-29 1977-09-27 Brigham Young University Speech coding hearing aid system utilizing formant frequency transformation
US4241235A (en) * 1979-04-04 1980-12-23 Reflectone, Inc. Voice modification system
US4419544A (en) * 1982-04-26 1983-12-06 Adelman Roger A Signal processing apparatus
US5077800A (en) * 1988-10-14 1991-12-31 Societe Anonyme Dite: Laboratorie D'audiologie Dupret-Lefevre S.A. Electronic device for processing a sound signal
US5719346A (en) * 1995-02-02 1998-02-17 Yamaha Corporation Harmony chorus apparatus generating chorus sound derived from vocal sound

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4051331A (en) * 1976-03-29 1977-09-27 Brigham Young University Speech coding hearing aid system utilizing formant frequency transformation
US4241235A (en) * 1979-04-04 1980-12-23 Reflectone, Inc. Voice modification system
US4419544A (en) * 1982-04-26 1983-12-06 Adelman Roger A Signal processing apparatus
US5077800A (en) * 1988-10-14 1991-12-31 Societe Anonyme Dite: Laboratorie D'audiologie Dupret-Lefevre S.A. Electronic device for processing a sound signal
US5719346A (en) * 1995-02-02 1998-02-17 Yamaha Corporation Harmony chorus apparatus generating chorus sound derived from vocal sound

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
CZYZEWSKI A. ET AL.: "A method for spectral transportation of speach signal applicable in profound hearing loss", APPLICATIONS OF SIGNAL PROCESSING TO AUDIO AND ACOUSTICS, 1997 IEEE ASSP WORKSHOP, 19 October 1997 (1997-10-19) - 22 October 1997 (1997-10-22), pages 4 PAGES, XP002932500 *

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1333700A2 (fr) * 2003-03-06 2003-08-06 Phonak Ag Procédé de transposition de fréquence dans une prothèse auditive et une telle prothèse auditive
EP1333700A3 (fr) * 2003-03-06 2003-09-17 Phonak Ag Procédé de transposition de fréquence dans une prothèse auditive et une telle prothèse auditive
EP1441562A2 (fr) * 2003-03-06 2004-07-28 Phonak Ag Procédé de transposition de fréquence et utilisation du procédé dans une prothèse auditive et un dispositif de communication
US7248711B2 (en) 2003-03-06 2007-07-24 Phonak Ag Method for frequency transposition and use of the method in a hearing device and a communication device
EP1441562A3 (fr) * 2003-03-06 2007-11-21 Phonak Ag Procédé de transposition de fréquence et utilisation du procédé dans une prothèse auditive et un dispositif de communication
GB2419071A (en) * 2004-10-06 2006-04-12 Vladimir Ivanovich Eliseev Method of sound signal restoration
EP1686566A3 (fr) * 2005-04-29 2009-05-13 Phonak AG Traitenment de son avec transposition de fréquence
EP2099235A2 (fr) 2008-03-06 2009-09-09 Starkey Laboratories, Inc. Transposition en fréquence par réajustement à haute fréquence de l'enveloppe spectrale pour prothèses auditives
EP2249587A2 (fr) 2009-05-06 2010-11-10 Starkey Laboratories, Inc. Transposition en fréquence par réajustement à haute fréquence de l'enveloppe spectrale pour prothèses auditives
US9060231B2 (en) 2009-05-06 2015-06-16 Starkey Laboratories, Inc. Frequency translation by high-frequency spectral envelope warping in hearing assistance devices
AU2011226931B2 (en) * 2010-09-29 2013-09-05 Sivantos Pte. Ltd. Hearing aid device for frequency compression
EP2437522A1 (fr) * 2010-09-29 2012-04-04 Siemens Medical Instruments Pte. Ltd. Appareil auditif pour la compression de fréquence
US8855342B2 (en) 2010-09-29 2014-10-07 Siemens Medical Instruments Pte. Ltd. Hearing aid device for frequency compression
US8908892B2 (en) 2010-09-29 2014-12-09 Siemens Medical Instruments Pte. Ltd. Method and device for frequency compression in a hearing aid
EP2437520A1 (fr) * 2010-09-29 2012-04-04 Siemens Medical Instruments Pte. Ltd. Appareil auditif pour la compression de fréquence
JP2012075106A (ja) * 2010-09-29 2012-04-12 Siemens Medical Instruments Pte Ltd 補聴器の入力信号の周波数圧縮方法および補聴器
US8787605B2 (en) 2012-06-15 2014-07-22 Starkey Laboratories, Inc. Frequency translation in hearing assistance devices using additive spectral synthesis
US10575103B2 (en) 2015-04-10 2020-02-25 Starkey Laboratories, Inc. Neural network-driven frequency translation
US11736870B2 (en) 2015-04-10 2023-08-22 Starkey Laboratories, Inc. Neural network-driven frequency translation
US11223909B2 (en) 2015-04-10 2022-01-11 Starkey Laboratories, Inc. Neural network-driven frequency translation
EP3128765A1 (fr) * 2015-08-07 2017-02-08 Tain-Tzu Chang Procédé de traitement d'une bande sonore
US10313805B2 (en) 2015-09-25 2019-06-04 Starkey Laboratories, Inc. Binaurally coordinated frequency translation in hearing assistance devices
US9843875B2 (en) 2015-09-25 2017-12-12 Starkey Laboratories, Inc. Binaurally coordinated frequency translation in hearing assistance devices
US20190362734A1 (en) * 2018-05-28 2019-11-28 Unlimiter Mfa Co., Ltd. Method for detecting ambient noise to change the playing voice frequency and sound playing device thereof
US11367457B2 (en) * 2018-05-28 2022-06-21 Pixart Imaging Inc. Method for detecting ambient noise to change the playing voice frequency and sound playing device thereof

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AU5264100A (en) 2000-12-28

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