WO2009034686A1 - 音判定装置、音検知装置及び音判定方法 - Google Patents

音判定装置、音検知装置及び音判定方法 Download PDF

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Publication number
WO2009034686A1
WO2009034686A1 PCT/JP2008/002287 JP2008002287W WO2009034686A1 WO 2009034686 A1 WO2009034686 A1 WO 2009034686A1 JP 2008002287 W JP2008002287 W JP 2008002287W WO 2009034686 A1 WO2009034686 A1 WO 2009034686A1
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Prior art keywords
sound
phase
judging
distances
frequency
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PCT/JP2008/002287
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English (en)
French (fr)
Inventor
Shinichi Yoshizawa
Yoshihisa Nakatoh
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Panasonic Corporation
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Publication date
Application filed by Panasonic Corporation filed Critical Panasonic Corporation
Priority to US12/517,388 priority Critical patent/US8352274B2/en
Priority to EP08790491.8A priority patent/EP2116999B1/en
Priority to JP2009503356A priority patent/JP4310371B2/ja
Priority to CN2008800040209A priority patent/CN101601088B/zh
Publication of WO2009034686A1 publication Critical patent/WO2009034686A1/ja

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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
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/78—Detection of presence or absence of voice signals
    • G10L2025/783—Detection of presence or absence of voice signals based on threshold decision
    • 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
    • G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
    • G10L25/93—Discriminating between voiced and unvoiced parts of speech signals
    • G10L2025/937—Signal energy in various frequency bands

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  • 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)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

　雑音除去装置（１００）は、抽出音と雑音とを含む混合音を受付けて、所定の時間幅に含まれる複数の時刻の各々について、前記混合音の周波数信号を求めるＦＦＴ分析部（２４０２）と、前記所定の時間幅に含まれる複数の時刻の前記周波数信号において、第１のしきい値以上の数から構成され、かつ周波数信号間の位相距離が第２のしきい値以下である周波数信号の各々を、前記抽出音の周波数信号と判定する抽出音判定部（１０１（ｊ））とを備え、前記位相距離は、時刻ｔの周波数信号の位相をψ（ｔ）（ラジアン）とするときに、位相をψ´（ｔ）＝ｍｏｄ２π（ψ（ｔ）－２πｆｔ）（ｆは分析周波数）で表したときの、周波数信号の位相間の距離である。
PCT/JP2008/002287 2007-09-11 2008-08-25 音判定装置、音検知装置及び音判定方法 WO2009034686A1 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
US12/517,388 US8352274B2 (en) 2007-09-11 2008-08-25 Sound determination device, sound detection device, and sound determination method for determining frequency signals of a to-be-extracted sound included in a mixed sound
EP08790491.8A EP2116999B1 (en) 2007-09-11 2008-08-25 Sound determination device, sound determination method and program therefor
JP2009503356A JP4310371B2 (ja) 2007-09-11 2008-08-25 音判定装置、音検知装置及び音判定方法
CN2008800040209A CN101601088B (zh) 2007-09-11 2008-08-25 声音判断装置、声音检测装置以及声音判断方法

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2007235899 2007-09-11
JP2007-235899 2007-09-11
JP2008141615 2008-05-29
JP2008-141615 2008-05-29

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US (1) US8352274B2 (ja)
EP (1) EP2116999B1 (ja)
JP (1) JP4310371B2 (ja)
CN (1) CN101601088B (ja)
WO (1) WO2009034686A1 (ja)

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US20100030562A1 (en) 2010-02-04
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JP4310371B2 (ja) 2009-08-05
CN101601088A (zh) 2009-12-09
EP2116999A1 (en) 2009-11-11
EP2116999A4 (en) 2010-04-28
JPWO2009034686A1 (ja) 2010-12-24

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