EP2437258A3 - Method and device for frequency compression with selective frequency shifting - Google Patents

Method and device for frequency compression with selective frequency shifting Download PDF

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Publication number
EP2437258A3
EP2437258A3 EP20110183051 EP11183051A EP2437258A3 EP 2437258 A3 EP2437258 A3 EP 2437258A3 EP 20110183051 EP20110183051 EP 20110183051 EP 11183051 A EP11183051 A EP 11183051A EP 2437258 A3 EP2437258 A3 EP 2437258A3
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EP
European Patent Office
Prior art keywords
frequency
channel
dominant instantaneous
compression
shifted
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP20110183051
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German (de)
French (fr)
Other versions
EP2437258B1 (en
EP2437258A2 (en
Inventor
Robert BÄUML
Ulrich Kornagel
Thomas Pilgrim
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
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Publication date
Application filed by Siemens Medical Instruments Pte Ltd filed Critical Siemens Medical Instruments Pte Ltd
Publication of EP2437258A2 publication Critical patent/EP2437258A2/en
Publication of EP2437258A3 publication Critical patent/EP2437258A3/en
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Publication of EP2437258B1 publication Critical patent/EP2437258B1/en
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Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L21/00—Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
    • 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 OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/02—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders
    • G10L19/0204—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders using subband decomposition

Abstract

Bei der Frequenzkompression von Audiosignalen soll das Auftreten von Artefakten vermindert werden. Dazu wird ein Verfahren vorgeschlagen, bei dem das zu komprimierende Audiosignal in mehreren Frequenzkanälen bereitgestellt und ein Anteil des Audiosignals von einem ersten Frequenzkanal (14') der mehreren Frequenzkanäle in einen zweiten Frequenzkanal (11') der mehreren Frequenzkanäle verschoben wird. Eine dominante Momentanfrequenz (14") wird in dem ersten Frequenzkanal (14') ermittelt. Bei dem Verschieben oder Abbilden wird zunächst der gesamte erste Frequenzkanal (14') einschließlich der dominanten Momentanfrequenz in den zweiten Frequenzkanal (11') verschoben oder abgebildet, wobei die dominante Momentanfrequenz eine Zwischenfrequenzposition (fz) erhält. Eine endgültige Frequenzposition (fd) für die dominante Momentanfrequenz wird durch eine vorgegebene Kompressionskennlinie in dem zweiten Frequenzkanal (11'), ausgehend von der Frequenzposition (fs) der dominanten Momentanfrequenz in dem ersten Frequenzkanal (14'), ermittelt. Schließlich wird die dominante Momentanfrequenz von der Zwischenfrequenzposition (fz) auf die endgültige Frequenzposition (fd) geschoben oder abgebildet.

Figure imgaf001
In the frequency compression of audio signals, the occurrence of artifacts should be reduced. For this purpose, a method is proposed in which the audio signal to be compressed is provided in a plurality of frequency channels and a portion of the audio signal is shifted from a first frequency channel (14 ') of the plurality of frequency channels to a second frequency channel (11') of the plurality of frequency channels. A dominant instantaneous frequency (14 ") is determined in the first frequency channel (14 '). In the shifting or mapping, first the entire first frequency channel (14') including the dominant instantaneous frequency is shifted or imaged into the second frequency channel (11 ') receives the dominant instantaneous frequency of an intermediate frequency position (f z). a final frequency position (f d) for the dominant instantaneous frequency is the first in the by a predetermined compression characteristic in the second frequency channel (11 '), starting from the frequency position (f s) of the dominant instantaneous frequency Finally, the dominant instantaneous frequency is shifted or imaged from the intermediate frequency position (f z ) to the final frequency position (f d ).
Figure imgaf001
EP11183051.9A 2010-09-29 2011-09-28 Method and device for frequency compression with selective frequency shifting Active EP2437258B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102010041653.3A DE102010041653B4 (en) 2010-09-29 2010-09-29 Method and apparatus for frequency compression with selective frequency shift

Publications (3)

Publication Number Publication Date
EP2437258A2 EP2437258A2 (en) 2012-04-04
EP2437258A3 true EP2437258A3 (en) 2013-09-04
EP2437258B1 EP2437258B1 (en) 2015-11-11

Family

ID=44720711

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EP11183051.9A Active EP2437258B1 (en) 2010-09-29 2011-09-28 Method and device for frequency compression with selective frequency shifting

Country Status (4)

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US (1) US9031269B2 (en)
EP (1) EP2437258B1 (en)
DE (1) DE102010041653B4 (en)
DK (1) DK2437258T3 (en)

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GB2488167A (en) * 2011-02-18 2012-08-22 Nec Corp Handover procedure in a home base station connected to a home base station gateway
TWI504282B (en) * 2012-07-20 2015-10-11 Unlimiter Mfa Co Ltd Method and hearing aid of enhancing sound accuracy heard by a hearing-impaired listener
US9084050B2 (en) * 2013-07-12 2015-07-14 Elwha Llc Systems and methods for remapping an audio range to a human perceivable range
TWI543634B (en) * 2013-12-10 2016-07-21 元鼎音訊股份有限公司 Method and computer program product of processing voice segment and hearing aid
KR102308541B1 (en) * 2015-01-16 2021-10-05 삼성전자주식회사 Method and apparatus for transmitting packet in a multi-carrier wireless communication system based on filter bank
KR102494080B1 (en) * 2016-06-01 2023-02-01 삼성전자 주식회사 Electronic device and method for correcting sound signal thereof
US11188292B1 (en) 2019-04-03 2021-11-30 Discovery Sound Technology, Llc System and method for customized heterodyning of collected sounds from electromechanical equipment
CN110265042B (en) * 2019-05-31 2021-07-23 歌尔科技有限公司 Sound signal processing method, device and equipment
CN110491407B (en) * 2019-08-15 2021-09-21 广州方硅信息技术有限公司 Voice noise reduction method and device, electronic equipment and storage medium

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1333700A2 (en) * 2003-03-06 2003-08-06 Phonak Ag Method for frequency transposition in a hearing device and such a hearing device
WO2005015952A1 (en) * 2003-08-11 2005-02-17 Vast Audio Pty Ltd Sound enhancement for hearing-impaired listeners
WO2007000161A1 (en) * 2005-06-27 2007-01-04 Widex A/S Hearing aid with enhanced high frequency reproduction and method for processing an audio signal

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6577739B1 (en) * 1997-09-19 2003-06-10 University Of Iowa Research Foundation Apparatus and methods for proportional audio compression and frequency shifting
FR2822000B1 (en) * 2001-03-08 2003-05-23 Thomson Multimedia Sa TRANSMISSION DEVICE LIMITING PARASITES OUTSIDE THE ALLOCATED FREQUENCY BAND
DE102006019728A1 (en) * 2006-04-27 2007-11-15 Siemens Audiologische Technik Gmbh Time-adaptive setting of a hearing aid device and corresponding method
WO2009143898A1 (en) * 2008-05-30 2009-12-03 Phonak Ag Method for adapting sound in a hearing aid device by frequency modification and such a device
FR2950497B1 (en) * 2009-09-24 2011-10-21 Eutelsat Sa USEFUL LOAD FOR MULTIFACEAL SATELLITE

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1333700A2 (en) * 2003-03-06 2003-08-06 Phonak Ag Method for frequency transposition in a hearing device and such a hearing device
WO2005015952A1 (en) * 2003-08-11 2005-02-17 Vast Audio Pty Ltd Sound enhancement for hearing-impaired listeners
WO2007000161A1 (en) * 2005-06-27 2007-01-04 Widex A/S Hearing aid with enhanced high frequency reproduction and method for processing an audio signal

Also Published As

Publication number Publication date
EP2437258B1 (en) 2015-11-11
US9031269B2 (en) 2015-05-12
US20120076333A1 (en) 2012-03-29
DE102010041653B4 (en) 2015-04-02
EP2437258A2 (en) 2012-04-04
DE102010041653A1 (en) 2012-03-29
DK2437258T3 (en) 2016-02-15

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