MX9801857A - Sistema para filtrar adaptivamente las señales de audio para mejorar la inteligibilidad del habla, en condiciones ambientales ruidosas. - Google Patents

Sistema para filtrar adaptivamente las señales de audio para mejorar la inteligibilidad del habla, en condiciones ambientales ruidosas.

Info

Publication number
MX9801857A
MX9801857A MX9801857A MX9801857A MX9801857A MX 9801857 A MX9801857 A MX 9801857A MX 9801857 A MX9801857 A MX 9801857A MX 9801857 A MX9801857 A MX 9801857A MX 9801857 A MX9801857 A MX 9801857A
Authority
MX
Mexico
Prior art keywords
noise
filter circuit
speech
filter
audio signals
Prior art date
Application number
MX9801857A
Other languages
English (en)
Spanish (es)
Inventor
Torbjorn W Solve
Original Assignee
Ericsson 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 Ericsson Inc filed Critical Ericsson Inc
Publication of MX9801857A publication Critical patent/MX9801857A/es

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
    • G10L2021/02168—Noise filtering characterised by the method used for estimating noise the estimation exclusively taking place during speech pauses
    • 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
    • G10L2025/786—Adaptive threshold
    • 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

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)
  • Signal Processing Not Specific To The Method Of Recording And Reproducing (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Filters That Use Time-Delay Elements (AREA)
MX9801857A 1995-09-14 1998-03-09 Sistema para filtrar adaptivamente las señales de audio para mejorar la inteligibilidad del habla, en condiciones ambientales ruidosas. MX9801857A (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US52800595A 1995-09-14 1995-09-14

Publications (1)

Publication Number Publication Date
MX9801857A true MX9801857A (es) 1998-11-29

Family

ID=24103874

Family Applications (1)

Application Number Title Priority Date Filing Date
MX9801857A MX9801857A (es) 1995-09-14 1998-03-09 Sistema para filtrar adaptivamente las señales de audio para mejorar la inteligibilidad del habla, en condiciones ambientales ruidosas.

Country Status (15)

Country Link
EP (1) EP0852052B1 (ja)
JP (1) JPH11514453A (ja)
KR (1) KR100423029B1 (ja)
CN (1) CN1121684C (ja)
AU (1) AU724111B2 (ja)
BR (1) BR9610290A (ja)
CA (1) CA2231107A1 (ja)
DE (1) DE69613380D1 (ja)
EE (1) EE03456B1 (ja)
MX (1) MX9801857A (ja)
NO (1) NO981074L (ja)
PL (1) PL185513B1 (ja)
RU (1) RU2163032C2 (ja)
TR (1) TR199800475T1 (ja)
WO (1) WO1997010586A1 (ja)

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AU7078496A (en) 1997-04-01
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TR199800475T1 (xx) 1998-06-22
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NO981074D0 (no) 1998-03-11
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EE03456B1 (et) 2001-06-15
CN1121684C (zh) 2003-09-17
KR19990044659A (ko) 1999-06-25
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