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WO2002086868A3 - Processing speech signals - Google Patents

Processing speech signals Download PDF

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Publication number
WO2002086868A3
WO2002086868A3 PCT/EP2002/003718 EP0203718W WO02086868A3 WO 2002086868 A3 WO2002086868 A3 WO 2002086868A3 EP 0203718 W EP0203718 W EP 0203718W WO 02086868 A3 WO02086868 A3 WO 02086868A3
Authority
WO
WIPO (PCT)
Prior art keywords
speech signals
noise
processing speech
harmonic peak
signal spectrum
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.)
Ceased
Application number
PCT/EP2002/003718
Other languages
French (fr)
Other versions
WO2002086868A2 (en
Inventor
Douglas Ralph Ealey
Holly Louise Kelleher
David John Benjamin Pearce
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.)
Motorola Solutions Inc
Original Assignee
Motorola Inc
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 Motorola Inc filed Critical Motorola Inc
Publication of WO2002086868A2 publication Critical patent/WO2002086868A2/en
Publication of WO2002086868A3 publication Critical patent/WO2002086868A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • G10L21/0216—Noise filtering characterised by the method used for estimating noise

Landscapes

  • Engineering & Computer Science (AREA)
  • Computational Linguistics (AREA)
  • Quality & Reliability (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Noise Elimination (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

A method of estimating noise in a speech signal spectrum, comprising: determining a noise level at each side of a harmonic peak (12, 14, 16, 42) of the speech signal spectrum; and interpolating using the noise levels determined at each side of the harmonic peak (12, 14, 16, 42) to estimate the noise level during the harmonic peak (12,14, 16, 42). The method is suited to estimating noise that varies during speech.
PCT/EP2002/003718 2001-04-24 2002-03-29 Processing speech signals Ceased WO2002086868A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0110064A GB2375027B (en) 2001-04-24 2001-04-24 Processing speech signals
GB0110064.3 2001-04-24

Publications (2)

Publication Number Publication Date
WO2002086868A2 WO2002086868A2 (en) 2002-10-31
WO2002086868A3 true WO2002086868A3 (en) 2003-05-01

Family

ID=9913380

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2002/003718 Ceased WO2002086868A2 (en) 2001-04-24 2002-03-29 Processing speech signals

Country Status (2)

Country Link
GB (1) GB2375027B (en)
WO (1) WO2002086868A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9249059B2 (en) 2012-04-05 2016-02-02 Varel International Ind., L.P. High temperature high heating rate treatment of PDC cutters

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9297731B2 (en) * 2010-04-06 2016-03-29 Varel Europe S.A.S Acoustic emission toughness testing for PDC, PCBN, or other hard or superhard material inserts
US9086348B2 (en) 2010-04-06 2015-07-21 Varel Europe S.A.S. Downhole acoustic emission formation sampling

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999059139A2 (en) * 1998-05-11 1999-11-18 Koninklijke Philips Electronics N.V. Speech coding based on determining a noise contribution from a phase change
WO2000038180A1 (en) * 1998-12-18 2000-06-29 Telefonaktiebolaget Lm Ericsson (Publ) Noise suppression in a mobile communications system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0763810B1 (en) * 1990-05-28 2001-09-26 Matsushita Electric Industrial Co., Ltd. Speech signal processing apparatus for detecting a speech signal from a noisy speech signal
JP2880683B2 (en) * 1996-03-25 1999-04-12 株式会社エイ・ティ・アール人間情報通信研究所 Noise suppression device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999059139A2 (en) * 1998-05-11 1999-11-18 Koninklijke Philips Electronics N.V. Speech coding based on determining a noise contribution from a phase change
WO2000038180A1 (en) * 1998-12-18 2000-06-29 Telefonaktiebolaget Lm Ericsson (Publ) Noise suppression in a mobile communications system

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
HONG M Y: "A sinusoidal signal analysis technique for fast, accurate, and discriminating frequency determination", IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING (ICASSP 2000), 5 June 2000 (2000-06-05) - 9 June 2000 (2000-06-09), Istanbul, Turkey, XP010507315 *
RIS C ET AL: "Assessing local noise level estimation methods: application to noise robust ASR", SPEECH COMMUNICATION, APRIL 2001, ELSEVIER, NETHERLANDS, vol. 34, no. 1-2, pages 141 - 158, XP002224855, ISSN: 0167-6393 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9249059B2 (en) 2012-04-05 2016-02-02 Varel International Ind., L.P. High temperature high heating rate treatment of PDC cutters

Also Published As

Publication number Publication date
GB2375027A (en) 2002-10-30
WO2002086868A2 (en) 2002-10-31
GB0110064D0 (en) 2001-06-13
GB2375027B (en) 2003-05-28

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