JP6096956B2 - 周波数に依存して入力信号の雑音を抑圧するための方法 - Google Patents
周波数に依存して入力信号の雑音を抑圧するための方法 Download PDFInfo
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- 238000000034 method Methods 0.000 title claims description 29
- 230000001629 suppression Effects 0.000 claims description 43
- 230000003595 spectral effect Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000005236 sound signal Effects 0.000 description 3
- 230000001419 dependent effect Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
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- 230000007704 transition Effects 0.000 description 1
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- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B15/00—Suppression or limitation of noise or interference
- H04B15/005—Reducing noise, e.g. humm, from the supply
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
- H04R1/1083—Reduction of ambient noise
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- 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
-
- 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
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- 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
- H04R25/407—Circuits for combining signals of a plurality of transducers
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- 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
- G10L2021/02166—Microphone arrays; Beamforming
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- 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
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2430/00—Signal processing covered by H04R, not provided for in its groups
- H04R2430/03—Synergistic effects of band splitting and sub-band processing
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Neurosurgery (AREA)
- Otolaryngology (AREA)
- Computer Networks & Wireless Communication (AREA)
- Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
- Noise Elimination (AREA)
- Circuit For Audible Band Transducer (AREA)
Description
4 フィルタバンク
6 主信号経路
8 副信号経路
12 雑音
20 方法
B1〜B7 周波数帯域
Br1〜Br7 減少した周波数帯域
f1〜f7 中間周波数
R1〜R7 抑圧パラメータ
W 帯域幅
Claims (8)
- 周波数に依存して入力信号(2)の雑音を抑圧するための方法(20)であって、
前記入力信号(2)が主信号経路(6)と副信号経路(8)に分割され、
前記入力信号(2)がフィルタバンク(4)によって、それぞれ所定の帯域幅(W)および中間周波数(f1〜f7)の複数の周波数帯域(B1〜B7)に分解され、
前記副信号経路(8)において各前記周波数帯域(B1〜B7)で信号成分の前記帯域幅(W)が減少させられ、その際それぞれ1つの減少した周波数帯域(Br1〜Br7)が形成され、
各前記減少した周波数帯域(Br1〜Br7)において前記入力信号(2)の前記信号成分に基づいて抑圧パラメータ(R1〜R7)が求められ、
前記主信号経路(6)において各前記周波数帯域(B1〜B7)で前記入力信号(2)内の雑音(12)がそれぞれの前記抑圧パラメータ(R1〜R7)に基づいて抑圧されることを特徴とする上記方法(20)。 - 各前記減少した周波数帯域(Br1〜Br7)において、前記減少した帯域幅(Wr)それぞれの信号成分の1つのレベルを使用して、前記抑圧パラメータ(R1〜R7、Rj)を求めることを特徴とする請求項1に記載の方法(20)。
- 前記入力信号(2)が少なくとも前記副信号経路(8)についてデジタル化されることを特徴とする請求項1または2に記載の方法(20)。
- 前記副信号経路(8)において各前記周波数帯域(Br1〜Br7)で、前記信号成分の前記帯域幅(W)がフィルタ(22)によって減少させられることを特徴とする請求項1〜3のいずれか一項に記載の方法(20)。
- 前記副信号経路(8)において各前記周波数帯域(B1〜B7)について前記中間周波数(f1〜f7)がゼロにシフトされ、続いて前記信号成分の前記帯域幅(W)が低域フィルタ(22)によって減少させられることを特徴とする請求項4に記載の方法(20)。
- 指向性マイクロホン(32)によって前記入力信号(2)が感知され、
前記入力信号(2)において前記抑圧パラメータ(R1〜R7)に基づき、前記指向性マイクロホン(32)の指向特性(36)を周波数に依存して適応させることによって前記雑音(12)が抑圧されることを特徴とする請求項1〜5のいずれか一項に記載の方法(20)。 - 前記指向性マイクロホン(32)によって多チャネル入力信号(2)が記録され、
前記入力信号(2)が各チャネルにおいてフィルタバンク(4)によって複数の前記周波数帯域(B1〜B7)に分解され、
各チャネルについて各前記周波数帯域(B1〜B7)のための1つの抑圧パラメータ(R1〜R7)がそれぞれ前記減少した周波数帯域(Br1〜Br7)によって求められ、
各前記周波数帯域(B1〜B7)について前記指向特性(36)がすべてのチャネルの信号成分からその都度の抑圧パラメータ(R1〜R7)に依存して適応させられることを特徴とする請求項6に記載の方法(20)。 - 入力信号(2)を感知するための少なくとも1個のマイクロホン(32a、32b)と、請求項1〜7のいずれか一項に記載の方法(20)を実施するように形成された信号処理ユニット(34)を含む補聴器(30)。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015204253.7A DE102015204253B4 (de) | 2015-03-10 | 2015-03-10 | Verfahren zur frequenzabhängigen Rauschunterdrückung eines Eingangssignals sowie Hörgerät |
DE102015204253.7 | 2015-03-10 |
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JP2016171567A JP2016171567A (ja) | 2016-09-23 |
JP6096956B2 true JP6096956B2 (ja) | 2017-03-15 |
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JP2016045149A Active JP6096956B2 (ja) | 2015-03-10 | 2016-03-09 | 周波数に依存して入力信号の雑音を抑圧するための方法 |
Country Status (5)
Country | Link |
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US (1) | US10225667B2 (ja) |
EP (1) | EP3068141A1 (ja) |
JP (1) | JP6096956B2 (ja) |
CN (1) | CN105978634B (ja) |
DE (1) | DE102015204253B4 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
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CN108133712B (zh) * | 2016-11-30 | 2021-02-12 | 华为技术有限公司 | 一种处理音频数据的方法和装置 |
DE102017203631B3 (de) * | 2017-03-06 | 2018-05-17 | Sivantos Pte. Ltd. | Verfahren zur Frequenzverzerrung eines Audiosignals |
CN108461081B (zh) * | 2018-03-21 | 2020-07-31 | 北京金山安全软件有限公司 | 语音控制的方法、装置、设备和存储介质 |
DE102021211879A1 (de) | 2021-10-21 | 2023-04-27 | Sivantos Pte. Ltd. | Hörgerät und Verfahren zum Betrieb eines solchen |
Family Cites Families (20)
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US4099035A (en) | 1976-07-20 | 1978-07-04 | Paul Yanick | Hearing aid with recruitment compensation |
JPS60140399A (ja) * | 1983-12-28 | 1985-07-25 | 松下電器産業株式会社 | 雑音除去装置 |
US4630304A (en) * | 1985-07-01 | 1986-12-16 | Motorola, Inc. | Automatic background noise estimator for a noise suppression system |
FI80173C (fi) * | 1988-05-26 | 1990-04-10 | Nokia Mobile Phones Ltd | Foerfarande foer daempning av stoerningar. |
US5027410A (en) * | 1988-11-10 | 1991-06-25 | Wisconsin Alumni Research Foundation | Adaptive, programmable signal processing and filtering for hearing aids |
US5553014A (en) * | 1994-10-31 | 1996-09-03 | Lucent Technologies Inc. | Adaptive finite impulse response filtering method and apparatus |
US5633811A (en) * | 1994-12-09 | 1997-05-27 | Computational Systems, Inc. | Hand held data collector and analyzer system |
CA2212131A1 (en) | 1996-08-07 | 1998-02-07 | Beltone Electronics Corporation | Digital hearing aid system |
DE19645867A1 (de) * | 1996-11-07 | 1998-05-14 | Deutsche Telekom Ag | Verfahren zur mehrkanaligen Tonübertragung |
US5937377A (en) * | 1997-02-19 | 1999-08-10 | Sony Corporation | Method and apparatus for utilizing noise reducer to implement voice gain control and equalization |
US6240192B1 (en) * | 1997-04-16 | 2001-05-29 | Dspfactory Ltd. | Apparatus for and method of filtering in an digital hearing aid, including an application specific integrated circuit and a programmable digital signal processor |
AU771005B2 (en) * | 1999-07-08 | 2004-03-11 | Bernafon Ag | Hearing aid |
EP1519626A3 (en) * | 2004-12-07 | 2006-02-01 | Phonak Ag | Method and device for processing an acoustic signal |
JP4989582B2 (ja) * | 2008-08-04 | 2012-08-01 | ティーオーエー株式会社 | 信号処理装置 |
DE102008055760A1 (de) * | 2008-11-04 | 2010-05-20 | Siemens Medical Instruments Pte. Ltd. | Adaptives Mikrofonsystem für ein Hörgerät und zugehöriges Verfahren zum Betrieb |
US8379740B2 (en) * | 2008-12-23 | 2013-02-19 | Stmicroelectronics S.A. | Wide-band signal processor |
CN101645267B (zh) | 2009-04-03 | 2012-02-01 | 中国科学院声学研究所 | 一种应用于电子耳蜗的语音处理方法 |
CN102469387B (zh) | 2010-11-15 | 2014-10-22 | 财团法人工业技术研究院 | 抑制噪音系统与方法 |
US9237391B2 (en) * | 2012-12-04 | 2016-01-12 | Northwestern Polytechnical University | Low noise differential microphone arrays |
CN103856866B (zh) | 2012-12-04 | 2019-11-05 | 西北工业大学 | 低噪微分麦克风阵列 |
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2015
- 2015-03-10 DE DE102015204253.7A patent/DE102015204253B4/de active Active
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2016
- 2016-02-16 EP EP16155814.3A patent/EP3068141A1/de not_active Withdrawn
- 2016-03-09 JP JP2016045149A patent/JP6096956B2/ja active Active
- 2016-03-09 US US15/064,787 patent/US10225667B2/en active Active
- 2016-03-10 CN CN201610134451.3A patent/CN105978634B/zh active Active
Also Published As
Publication number | Publication date |
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US20160269835A1 (en) | 2016-09-15 |
DE102015204253A1 (de) | 2016-09-15 |
DE102015204253B4 (de) | 2016-11-10 |
US10225667B2 (en) | 2019-03-05 |
CN105978634B (zh) | 2019-04-16 |
CN105978634A (zh) | 2016-09-28 |
EP3068141A1 (de) | 2016-09-14 |
JP2016171567A (ja) | 2016-09-23 |
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