EP0912974B1 - Verfahren zur verringerung von störungen eines sprachsignals - Google Patents

Verfahren zur verringerung von störungen eines sprachsignals Download PDF

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Publication number
EP0912974B1
EP0912974B1 EP97930489A EP97930489A EP0912974B1 EP 0912974 B1 EP0912974 B1 EP 0912974B1 EP 97930489 A EP97930489 A EP 97930489A EP 97930489 A EP97930489 A EP 97930489A EP 0912974 B1 EP0912974 B1 EP 0912974B1
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EP
European Patent Office
Prior art keywords
masking curve
noise
signal
spectral
masking
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.)
Expired - Lifetime
Application number
EP97930489A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0912974A1 (de
Inventor
Peter SCHRÖGMEIER
Tim Haulick
Klaus Linhard
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.)
Daimler AG
Original Assignee
DaimlerChrysler AG
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Filing date
Publication date
Application filed by DaimlerChrysler AG filed Critical DaimlerChrysler AG
Publication of EP0912974A1 publication Critical patent/EP0912974A1/de
Application granted granted Critical
Publication of EP0912974B1 publication Critical patent/EP0912974B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • G10L21/0264—Noise filtering characterised by the type of parameter measurement, e.g. correlation techniques, zero crossing techniques or predictive techniques

Definitions

  • the invention relates to a method for reducing Interference with a speech signal.
  • Measures to suppress "musical tones" at the spectral subtraction are the overestimation of the interference power overcompensation of the disturbance with the disadvantage the increased speech distortion or allowing one relatively high noise level with the disadvantage of only one low noise reduction (e.g. "Enhancement of Speech Corrupted by Acoustic Noise "by Berouti, M .; Schwartz, R .; Makhoul, J .; in Proceedings on ICASSP, pp. 208-211, 1979).
  • Methods for linear or non-linear smoothing and thus to suppress the "musical tones” e.g. in “Suppression of Acoustic Noise in Speech Using Spectral Subtraction "by S.F. Boll in IEEE Vol. ASSP-27, No. 2, pp. 113-120.
  • An effective non-linear Smoothing with median filtering is in the DE 44 05 723 A1 specified.
  • the object of the present invention is an improved Method of reducing speech signal interference specify.
  • the invention is essentially based on the fact that signal components, which can only be heard individually through noise reduction appear, recognized as disturbances and afterwards reduced or eliminated by selective damping become.
  • the audibility criterion is in is known to exceed a masking curve (masking threshold).
  • fl as the predeterminable basic value (also spectral floor), which represents a lower bound for the filter coefficients and is usually 0.1 ⁇ fl ⁇ 0.25. He decides one in the output signal of the spectral subtraction remaining amount of residual noise that the lowering of the Listening threshold limited and so narrowband portions in noise-reduced output signal of the spectral subtraction partially covered. Compliance with a core value fl improves the subjective hearing impression.
  • a characteristic used in the method according to the invention is that they in the output signal of the noise reduction process for that human ear perceptible as a disturbance in appearance to step.
  • the second concealment curve makes it noticeable quantified for this output signal become.
  • the level threshold of second concealment curve exceeding language useful portions in the output signal, which is already in the input signal as exceeding the level of the first masking curve
  • the musical tones can be perceived by comparison the perceptible signal components in the output signal and input signal noise reduction as new audible components distinguished and in a subsequent processing step be selectively damped selectively.
  • the invention is not for spectral subtraction Noise reduction limited.

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  • Engineering & Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Quality & Reliability (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Computational Linguistics (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Noise Elimination (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
EP97930489A 1996-07-19 1997-07-02 Verfahren zur verringerung von störungen eines sprachsignals Expired - Lifetime EP0912974B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19629132A DE19629132A1 (de) 1996-07-19 1996-07-19 Verfahren zur Verringerung von Störungen eines Sprachsignals
DE19629132 1996-07-19
PCT/EP1997/003482 WO1998003965A1 (de) 1996-07-19 1997-07-02 Verfahren zur verringerung von störungen eines sprachsignals

Publications (2)

Publication Number Publication Date
EP0912974A1 EP0912974A1 (de) 1999-05-06
EP0912974B1 true EP0912974B1 (de) 2000-04-12

Family

ID=7800259

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97930489A Expired - Lifetime EP0912974B1 (de) 1996-07-19 1997-07-02 Verfahren zur verringerung von störungen eines sprachsignals

Country Status (8)

Country Link
US (1) US6687669B1 (es)
EP (1) EP0912974B1 (es)
JP (1) JP4187795B2 (es)
AT (1) ATE191806T1 (es)
CA (1) CA2260893C (es)
DE (2) DE19629132A1 (es)
ES (1) ES2146107T3 (es)
WO (1) WO1998003965A1 (es)

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DE19957220A1 (de) * 1999-11-27 2001-06-21 Alcatel Sa An den aktuellen Geräuschpegel adaptierte Geräuschunterdrückung
US6473733B1 (en) 1999-12-01 2002-10-29 Research In Motion Limited Signal enhancement for voice coding
JP3566197B2 (ja) * 2000-08-31 2004-09-15 松下電器産業株式会社 雑音抑圧装置及び雑音抑圧方法
US7457750B2 (en) * 2000-10-13 2008-11-25 At&T Corp. Systems and methods for dynamic re-configurable speech recognition
US20040078199A1 (en) * 2002-08-20 2004-04-22 Hanoh Kremer Method for auditory based noise reduction and an apparatus for auditory based noise reduction
US8271279B2 (en) 2003-02-21 2012-09-18 Qnx Software Systems Limited Signature noise removal
US8073689B2 (en) 2003-02-21 2011-12-06 Qnx Software Systems Co. Repetitive transient noise removal
US8326621B2 (en) 2003-02-21 2012-12-04 Qnx Software Systems Limited Repetitive transient noise removal
US7895036B2 (en) * 2003-02-21 2011-02-22 Qnx Software Systems Co. System for suppressing wind noise
US7949522B2 (en) * 2003-02-21 2011-05-24 Qnx Software Systems Co. System for suppressing rain noise
US7885420B2 (en) * 2003-02-21 2011-02-08 Qnx Software Systems Co. Wind noise suppression system
US7725315B2 (en) * 2003-02-21 2010-05-25 Qnx Software Systems (Wavemakers), Inc. Minimization of transient noises in a voice signal
US7406412B2 (en) * 2004-04-20 2008-07-29 Dolby Laboratories Licensing Corporation Reduced computational complexity of bit allocation for perceptual coding
US8543390B2 (en) * 2004-10-26 2013-09-24 Qnx Software Systems Limited Multi-channel periodic signal enhancement system
US8306821B2 (en) * 2004-10-26 2012-11-06 Qnx Software Systems Limited Sub-band periodic signal enhancement system
US8170879B2 (en) * 2004-10-26 2012-05-01 Qnx Software Systems Limited Periodic signal enhancement system
US7610196B2 (en) * 2004-10-26 2009-10-27 Qnx Software Systems (Wavemakers), Inc. Periodic signal enhancement system
US7716046B2 (en) * 2004-10-26 2010-05-11 Qnx Software Systems (Wavemakers), Inc. Advanced periodic signal enhancement
US7680652B2 (en) 2004-10-26 2010-03-16 Qnx Software Systems (Wavemakers), Inc. Periodic signal enhancement system
US7949520B2 (en) * 2004-10-26 2011-05-24 QNX Software Sytems Co. Adaptive filter pitch extraction
DE102005001345B4 (de) * 2004-11-10 2013-01-31 Ask Industries Gmbh Verfahren und Vorrichtung zur Verarbeitung und Wiedergabe von Audiosignalen
US8284947B2 (en) * 2004-12-01 2012-10-09 Qnx Software Systems Limited Reverberation estimation and suppression system
US8027833B2 (en) 2005-05-09 2011-09-27 Qnx Software Systems Co. System for suppressing passing tire hiss
US8311819B2 (en) 2005-06-15 2012-11-13 Qnx Software Systems Limited System for detecting speech with background voice estimates and noise estimates
US8170875B2 (en) 2005-06-15 2012-05-01 Qnx Software Systems Limited Speech end-pointer
JP4738213B2 (ja) * 2006-03-09 2011-08-03 富士通株式会社 利得調整方法及び利得調整装置
US7844453B2 (en) 2006-05-12 2010-11-30 Qnx Software Systems Co. Robust noise estimation
US8335685B2 (en) * 2006-12-22 2012-12-18 Qnx Software Systems Limited Ambient noise compensation system robust to high excitation noise
US8326620B2 (en) 2008-04-30 2012-12-04 Qnx Software Systems Limited Robust downlink speech and noise detector
US20080231557A1 (en) * 2007-03-20 2008-09-25 Leadis Technology, Inc. Emission control in aged active matrix oled display using voltage ratio or current ratio
DE102007030209A1 (de) * 2007-06-27 2009-01-08 Siemens Audiologische Technik Gmbh Glättungsverfahren
US8850154B2 (en) 2007-09-11 2014-09-30 2236008 Ontario Inc. Processing system having memory partitioning
US8904400B2 (en) * 2007-09-11 2014-12-02 2236008 Ontario Inc. Processing system having a partitioning component for resource partitioning
US8694310B2 (en) 2007-09-17 2014-04-08 Qnx Software Systems Limited Remote control server protocol system
US8209514B2 (en) * 2008-02-04 2012-06-26 Qnx Software Systems Limited Media processing system having resource partitioning
US9020158B2 (en) * 2008-11-20 2015-04-28 Harman International Industries, Incorporated Quiet zone control system
US8135140B2 (en) * 2008-11-20 2012-03-13 Harman International Industries, Incorporated System for active noise control with audio signal compensation
US8718289B2 (en) * 2009-01-12 2014-05-06 Harman International Industries, Incorporated System for active noise control with parallel adaptive filter configuration
US8189799B2 (en) * 2009-04-09 2012-05-29 Harman International Industries, Incorporated System for active noise control based on audio system output
US8199924B2 (en) * 2009-04-17 2012-06-12 Harman International Industries, Incorporated System for active noise control with an infinite impulse response filter
US8077873B2 (en) * 2009-05-14 2011-12-13 Harman International Industries, Incorporated System for active noise control with adaptive speaker selection
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DE4405723A1 (de) * 1994-02-23 1995-08-24 Daimler Benz Ag Verfahren zur Geräuschreduktion eines gestörten Sprachsignals

Also Published As

Publication number Publication date
JP4187795B2 (ja) 2008-11-26
CA2260893A1 (en) 1998-01-29
DE59701446D1 (de) 2000-05-18
WO1998003965A1 (de) 1998-01-29
EP0912974A1 (de) 1999-05-06
CA2260893C (en) 2005-05-17
ATE191806T1 (de) 2000-04-15
US6687669B1 (en) 2004-02-03
DE19629132A1 (de) 1998-01-22
JP2002509620A (ja) 2002-03-26
ES2146107T3 (es) 2000-07-16

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