EP0865026A2 - Méthode pour la modification du débit de parole - Google Patents

Méthode pour la modification du débit de parole Download PDF

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Publication number
EP0865026A2
EP0865026A2 EP98104455A EP98104455A EP0865026A2 EP 0865026 A2 EP0865026 A2 EP 0865026A2 EP 98104455 A EP98104455 A EP 98104455A EP 98104455 A EP98104455 A EP 98104455A EP 0865026 A2 EP0865026 A2 EP 0865026A2
Authority
EP
European Patent Office
Prior art keywords
section
segments
segment
digitized
weighted
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
EP98104455A
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German (de)
English (en)
Other versions
EP0865026A3 (fr
EP0865026B1 (fr
Inventor
Holger Dr. Carl
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.)
Grundig Multimedia BV
Original Assignee
Grundig AG
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 Grundig AG filed Critical Grundig AG
Publication of EP0865026A2 publication Critical patent/EP0865026A2/fr
Publication of EP0865026A3 publication Critical patent/EP0865026A3/fr
Application granted granted Critical
Publication of EP0865026B1 publication Critical patent/EP0865026B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • G10L21/04—Time compression or expansion

Definitions

  • the invention relates to a method for speed modification of Speech signals in the time domain, especially an efficient overlap add method.
  • the time compression or time expansion of audio signals is used in studios, for example with the aim of trimming advertising programs to the intended length. In dictation technology, too, it is important to adapt the playback speed to the needs and skills of the typist.
  • Another application is in the real-time transmission of voice signals, in which data packets arrive at the receiver with a variable delay. By using the speed modification, the overall delay can be kept lower on average than the worst-case delay of the transmission link, without a data packet arriving too late leading to dropouts or other, similarly disturbing effects.
  • the process in addition to the desire for the highest possible sound quality, the following additional requirements apply to the process:
  • SOLA Synchronized OverLap-Add
  • WSOLA Waveform Similarity OverLap - Add
  • the object of the invention is to provide a method for speed modification of speech signals in the time domain, which works particularly efficiently and requires less effort compared to the prior art.
  • the shift variable ⁇ ⁇ contained in the above synthesis equation is to be determined from a "tolerance range" - ⁇ max , ..., ⁇ max for the purpose of the mentioned synchronization.
  • the basic procedure is as follows: Apart from a synchronization-related "jitter", segments of length L + N are taken from the original signal x (apart from a synchronization-related "jitter") and, after weighting with w (k), are added by L sample values each offset.
  • the signal y (k) obtained in this way is accelerated by a factor of ⁇ compared to x (k), that is to say that an utterance of K samples in the original signal x (k) length by this procedure onto a y (k) section the length K / ⁇ is mapped, that is to say shortened and thus accelerated in the reproduction for ⁇ > 1, or lengthened, that is to say slowed down, if ⁇ ⁇ 1.
  • the weighting of this section with the rising edge of the window is represented by multiplying this vector by a diagonal matrix V, which is populated with the values v (0), ..., v (N-1).
  • the weighting of the ideal segment section x is represented by the falling edge of the window by multiplication by 1 - V, where 1 denotes the N ⁇ N unit matrix.
  • the y (k) section resulting from the overlap-add synthesis in the critical overlap region is thus

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)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Analogue/Digital Conversion (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
EP98104455A 1997-03-14 1998-03-12 Méthode pour la modification du débit de parole Expired - Lifetime EP0865026B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19710545A DE19710545C1 (de) 1997-03-14 1997-03-14 Effizientes Verfahren zur Geschwindigkeitsmodifikation von Sprachsignalen
DE19710545 1997-03-14

Publications (3)

Publication Number Publication Date
EP0865026A2 true EP0865026A2 (fr) 1998-09-16
EP0865026A3 EP0865026A3 (fr) 1999-02-10
EP0865026B1 EP0865026B1 (fr) 2003-12-03

Family

ID=7823336

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98104455A Expired - Lifetime EP0865026B1 (fr) 1997-03-14 1998-03-12 Méthode pour la modification du débit de parole

Country Status (3)

Country Link
EP (1) EP0865026B1 (fr)
AT (1) ATE255763T1 (fr)
DE (2) DE19710545C1 (fr)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004114282A1 (fr) * 2003-06-16 2004-12-29 Siemens Aktiengesellschaft Dispositif et procede de compression ou d'etirement temporels, et serie d'echantillons associee
US6944510B1 (en) 1999-05-21 2005-09-13 Koninklijke Philips Electronics N.V. Audio signal time scale modification
WO2006048349A1 (fr) * 2004-11-03 2006-05-11 Siemens Aktiengesellschaft Procede pour emettre un flux de donnees utiles et terminal de communication pour la reception et l'emission d'un flux de donnees utiles
US7283954B2 (en) 2001-04-13 2007-10-16 Dolby Laboratories Licensing Corporation Comparing audio using characterizations based on auditory events
US7313519B2 (en) 2001-05-10 2007-12-25 Dolby Laboratories Licensing Corporation Transient performance of low bit rate audio coding systems by reducing pre-noise
US7461002B2 (en) 2001-04-13 2008-12-02 Dolby Laboratories Licensing Corporation Method for time aligning audio signals using characterizations based on auditory events
US7610205B2 (en) 2002-02-12 2009-10-27 Dolby Laboratories Licensing Corporation High quality time-scaling and pitch-scaling of audio signals
US7711123B2 (en) 2001-04-13 2010-05-04 Dolby Laboratories Licensing Corporation Segmenting audio signals into auditory events
US7894654B2 (en) 2008-07-08 2011-02-22 Ge Medical Systems Global Technology Company, Llc Voice data processing for converting voice data into voice playback data
CN102855884A (zh) * 2012-09-11 2013-01-02 中国人民解放军理工大学 基于短时连续非负矩阵分解的语音时长调整方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0427953B1 (fr) * 1989-10-06 1996-01-17 Matsushita Electric Industrial Co., Ltd. Appareil et méthode pour la modification du débit de parole
US5630013A (en) * 1993-01-25 1997-05-13 Matsushita Electric Industrial Co., Ltd. Method of and apparatus for performing time-scale modification of speech signals
US5694521A (en) * 1995-01-11 1997-12-02 Rockwell International Corporation Variable speed playback system

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6944510B1 (en) 1999-05-21 2005-09-13 Koninklijke Philips Electronics N.V. Audio signal time scale modification
US8195472B2 (en) 2001-04-13 2012-06-05 Dolby Laboratories Licensing Corporation High quality time-scaling and pitch-scaling of audio signals
US7283954B2 (en) 2001-04-13 2007-10-16 Dolby Laboratories Licensing Corporation Comparing audio using characterizations based on auditory events
US7461002B2 (en) 2001-04-13 2008-12-02 Dolby Laboratories Licensing Corporation Method for time aligning audio signals using characterizations based on auditory events
US7711123B2 (en) 2001-04-13 2010-05-04 Dolby Laboratories Licensing Corporation Segmenting audio signals into auditory events
US8488800B2 (en) 2001-04-13 2013-07-16 Dolby Laboratories Licensing Corporation Segmenting audio signals into auditory events
US7313519B2 (en) 2001-05-10 2007-12-25 Dolby Laboratories Licensing Corporation Transient performance of low bit rate audio coding systems by reducing pre-noise
US7610205B2 (en) 2002-02-12 2009-10-27 Dolby Laboratories Licensing Corporation High quality time-scaling and pitch-scaling of audio signals
WO2004114282A1 (fr) * 2003-06-16 2004-12-29 Siemens Aktiengesellschaft Dispositif et procede de compression ou d'etirement temporels, et serie d'echantillons associee
WO2006048349A1 (fr) * 2004-11-03 2006-05-11 Siemens Aktiengesellschaft Procede pour emettre un flux de donnees utiles et terminal de communication pour la reception et l'emission d'un flux de donnees utiles
US8270366B2 (en) 2004-11-03 2012-09-18 Siemens Enterprise Communications Gmbh & Co. Kg Method for outputting a useful data stream and communications terminal for receiving and for outputting a useful data stream
US7894654B2 (en) 2008-07-08 2011-02-22 Ge Medical Systems Global Technology Company, Llc Voice data processing for converting voice data into voice playback data
CN102855884A (zh) * 2012-09-11 2013-01-02 中国人民解放军理工大学 基于短时连续非负矩阵分解的语音时长调整方法
CN102855884B (zh) * 2012-09-11 2014-08-13 中国人民解放军理工大学 基于短时连续非负矩阵分解的语音时长调整方法

Also Published As

Publication number Publication date
DE19710545C1 (de) 1997-12-04
ATE255763T1 (de) 2003-12-15
EP0865026A3 (fr) 1999-02-10
EP0865026B1 (fr) 2003-12-03
DE59810302D1 (de) 2004-01-15

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