CA2391562A1 - Lissage de gain dans un decodeur de signaux vocaux et audio a large bande - Google Patents

Lissage de gain dans un decodeur de signaux vocaux et audio a large bande Download PDF

Info

Publication number
CA2391562A1
CA2391562A1 CA002391562A CA2391562A CA2391562A1 CA 2391562 A1 CA2391562 A1 CA 2391562A1 CA 002391562 A CA002391562 A CA 002391562A CA 2391562 A CA2391562 A CA 2391562A CA 2391562 A1 CA2391562 A1 CA 2391562A1
Authority
CA
Canada
Prior art keywords
gain
smoothing
innovative
audio signal
wideband signal
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.)
Granted
Application number
CA002391562A
Other languages
English (en)
Other versions
CA2391562C (fr
Inventor
Bruno Bessette
Redwan Salami
Roch Lefebvre
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.)
VoiceAge Corp
Original Assignee
Individual
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
Priority claimed from CA002290037A external-priority patent/CA2290037A1/fr
Application filed by Individual filed Critical Individual
Priority to CA 2391562 priority Critical patent/CA2391562C/fr
Publication of CA2391562A1 publication Critical patent/CA2391562A1/fr
Application granted granted Critical
Publication of CA2391562C publication Critical patent/CA2391562C/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/04—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
    • G10L19/08—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters
    • G10L19/083—Determination or coding of the excitation function; Determination or coding of the long-term prediction parameters the excitation function being an excitation gain

Landscapes

  • Engineering & Computer Science (AREA)
  • Computational Linguistics (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)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
CA 2391562 1999-11-18 2000-11-17 Lissage de gain dans un decodeur de signaux vocaux et audio a large bande Expired - Lifetime CA2391562C (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA 2391562 CA2391562C (fr) 1999-11-18 2000-11-17 Lissage de gain dans un decodeur de signaux vocaux et audio a large bande

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CA002290037A CA2290037A1 (fr) 1999-11-18 1999-11-18 Dispositif amplificateur a lissage du gain et methode pour codecs de signaux audio et de parole a large bande
CA2,290,037 1999-11-18
CA 2391562 CA2391562C (fr) 1999-11-18 2000-11-17 Lissage de gain dans un decodeur de signaux vocaux et audio a large bande
PCT/CA2000/001381 WO2001037264A1 (fr) 1999-11-18 2000-11-17 Lissage de gain dans un decodeur de signaux vocaux et audio a large bande

Publications (2)

Publication Number Publication Date
CA2391562A1 true CA2391562A1 (fr) 2001-05-25
CA2391562C CA2391562C (fr) 2006-05-16

Family

ID=25681334

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2391562 Expired - Lifetime CA2391562C (fr) 1999-11-18 2000-11-17 Lissage de gain dans un decodeur de signaux vocaux et audio a large bande

Country Status (1)

Country Link
CA (1) CA2391562C (fr)

Also Published As

Publication number Publication date
CA2391562C (fr) 2006-05-16

Similar Documents

Publication Publication Date Title
AU1644401A (en) Gain-smoothing in wideband speech and audio signal decoder
JP3653826B2 (ja) 音声復号化方法及び装置
CA2382175C (fr) Accroissement du signal sonore enfoui dans le bruit
CN100464509C (zh) 噪声抑制器
US6173258B1 (en) Method for reducing noise distortions in a speech recognition system
KR970004369A (ko) 음성 처리 시스템 및 그의 이용 방법
CA2252170A1 (fr) Methode et dispositif pour le codage de haute qualite de la parole fonctionnant sur une bande large et de signaux audio
CA2346251A1 (fr) Procede et systeme de mise a jour d'evaluations de bruit lors des pauses dans un signal d'informations
AU2001230190A1 (en) System and method for modifying speech signals
MY124630A (en) Complex signal activity detection for improved speech/noise classification of an audio signal
CA2260893A1 (fr) Procede pour reduire les parasites dans un signal vocal
Kim et al. Cepstrum-domain acoustic feature compensation based on decomposition of speech and noise for ASR in noisy environments
WO2004004297A8 (fr) Systeme d'optimisation audio en fonction de l'energie spectrale fixe
CA2262787A1 (fr) Procedes et dispositifs pour conditionner le bruit de signaux representatifs des informations audio sous forme comprimee et numerisee
US7539614B2 (en) System and method for audio signal processing using different gain factors for voiced and unvoiced phonemes
JPH10149199A (ja) 音声符号化方法、音声復号化方法、音声符号化装置、音声復号化装置、電話装置、ピッチ変換方法及び媒体
Junqua et al. A comparative study of cepstral lifters and distance measures for all pole models of speech in noise
EP1204092A3 (fr) Décodeur de parole avec reproduction du bruit de fond
KR20030031936A (ko) 피치변경법을 이용한 단일 음성 다중 목소리 합성기
CA2391562A1 (fr) Lissage de gain dans un decodeur de signaux vocaux et audio a large bande
Li et al. A high-performance auditory feature for robust speech recognition.
Beaugeant et al. Noise reduction using perceptual spectral change
Chu et al. SNR-dependent non-uniform spectral compression for noisy speech recognition
AU3858200A (en) An adaptive post-filtering technique based on the modified yule-walker filter
WO2002023536A3 (fr) Amelioration a court terme dans un codage de la parole du type celp

Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry

Effective date: 20201117