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Low bit rate vocoder means and method 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • G10L-009/04
출원번호 US-0732977 (1991-07-19)
발명자 / 주소
  • Fette Bruce A. (Mesa AZ) Jaskie Cynthia A. (Scottsdale AZ)
출원인 / 주소
  • Motorola, Inc. (Schaumburg IL 02)
인용정보 피인용 횟수 : 41  인용 특허 : 0

초록 ▼

Efficient coding speech information for low rate (e.g., 600 bps) channels using a four frame superframe (SF) includes: (1) coding spectral information using alternative quantizers one of which is chosen for each superframe so that 3 bits/SF identify the optimal quantizer and 28-32 bits/SF contain th

대표청구항 ▼

A method of analyzing and coding input speech, wherein the input speech is divided into frames characterized at least by spectral information, the method comprising steps of: forming superframes of N≥3 frames; choosing S combinations of the N frames two at a time, where S=SUM(N-m) for m=1 to N to pr

이 특허를 인용한 특허 (41)

  1. Cong Lin ; Asghar Safdar M., Adaptive speech recognition with selective input data to a speech classifier.
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  2. Sun, Xiaoqin; Wang, Tian; Khalil, Hosam A.; Koishida, Kazuhito; Chen, Wei-Ge, Audio codec post-filter.
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  3. Wang, Tian; Khalil, Hosam A.; Koishida, Kazuhito; Chen, Wei-Ge; Han, Mu, Audio encoding and decoding with intra frames and adaptive forward error correction.
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  4. Voran Stephen, Audio signal time offset estimation algorithm and measuring normalizing block algorithms for the perceptually-consistent comparison of speech signals.
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  5. Garudadri, Harinath; Majumdar, Somdeb; Julian, David Jonathan; Ganapathy, Chinnappa K., Channel decoding-based error detection.
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  6. Garudadri, Harinath; Majumdar, Somdeb; Julian, David Jonathan; Ganapathy, Chinnappa K., Data substitution scheme for oversampled data.
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  7. Gournay, Philippe; Bessette, Bruno; Salami, Redwan, Device and method for quantizing and inverse quantizing LPC filters in a super-frame.
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  8. Asghar Safdar M. ; Cong Lin, Distance measure in a speech recognition system for speech recognition using frequency shifting factors to compensate for input signal frequency shifts.
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  9. Bjorn Jonsson SE; Jan Swerup SE; Krister Tornqvist SE; Per-Olof Nerbrant SE, Embedded data in a coded voice channel.
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  10. Gersho,Allen; Cuperman,Vladimir; Wang,Tian; Koishida,Kazuhito, LPC-harmonic vocoder with superframe structure.
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  11. Gersho,Allen; Cuperman,Vladimir; Wang,Tian; Koishida,Kazuhito, LPC-harmonic vocoder with superframe structure.
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  12. Murashima Atsushi,JPX, LSP prediction coding utilizing a determined best prediction matrix based upon past frame information.
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  13. Asghar Safdar M. ; Cong Lin, Line spectral frequencies and energy features in a robust signal recognition system.
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  14. Das, Amitava; Manjunath, Sharath, Low bit-rate coding of unvoiced segments of speech.
    상세보기
  15. Jonsson Bjorn,SEX ; Swerup Jan,SEX ; Tornqvist Krister,SEX ; Nerbrant Per-Olof,SEX, Mapping of digital data symbols onto one or more formant frequencies for transmission over a coded voice channel.
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  16. Safdar M. Asghar ; Lin Cong, Matrix quantization with vector quantization error compensation and neural network postprocessing for robust speech recognition.
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  17. Cong Lin ; Asghar Safdar M., Matrix quantization with vector quantization error compensation for robust speech recognition.
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  18. Kolesnik Victor D.,RUX ; Bocharova Irina,RUX ; Kudryashov Boris,RUX ; Ovsyannikov Eugene,RUX ; Trofimov Andrei,RUX ; Troyanovsky Boris,RUX, Method and apparatus for adaptive audio compression and decompression.
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  19. Benyassine Adil ; Shlomot Eyal, Method and apparatus for generating frame voicing decisions of an incoming speech signal.
    상세보기
  20. Lee, Minkyu; McGowan, James William; Recchione, Michael Charles, Method and apparatus for performing active packet bundling in a voice over IP communications system based on voice concealability.
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  21. Ananthapadmanabhan, Arasanipalai K.; Manjunath, Sarath; Huang, Pengjun; Choy, Eddie-Lun Tik; Dejaco, Andrew P., Method and apparatus for predictively quantizing voiced speech.
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  22. Ananthapadmanabhan,Arasanipalai K.; Manjunath,Sharath; Huang,Pengjun; Choy,Eddie Lun Tik; DeJaco,Andrew P., Method and apparatus for quantizing pitch, amplitude, phase and linear spectrum of voiced speech.
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  23. Kolesnik Victor D. (St. Petersburg RUX) Trofimov Andrey N. (St. Petersburg RUX) Bocharova Irina E. (St. Petersburg RUX) Krachkovsky Victor Y. (St. Petersburg RUX) Kudryashov Boris D. (St. Petersburg , Method and apparatus for speech compression using multi-mode code excited linear predictive coding.
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  24. Kolesnik Victor D.,RUX ; Trofimov Andrey N.,RUX ; Bocharova Irina E.,RUX ; Krachkovsky Victor Yu,RUX ; Kudryashov Boris D.,RUX ; Ovsjannikov Eugeny P.,RUX ; Trojanovsky Boris K.,RUX ; Kovalov Sergei , Method and apparatus for speech compression using multi-mode code excited linear predictive coding.
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  25. Gournay, Philippe; Chartier, Frederic, Method for quantizing speech coder parameters.
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  26. Gournay, Philippe; Bessette, Bruno; Salami, Redwan, Multi-reference LPC filter quantization and inverse quantization device and method.
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  27. Lee, Minkyu; Zhou, Qiru; Zitouni, Imed, Packet loss concealment based on statistical -gram predictive models for use in voice-over-IP speech transmission.
    상세보기
  28. Safdar M. Asghar ; Lin Cong, Quantization using frequency and mean compensated frequency input data for robust speech recognition.
    상세보기
  29. Sung, Ho-sang; Choo, Ki-hyun; Oh, Eun-mi, Signal encoding method and apparatus and signal decoding method and apparatus.
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  30. Preuss, Robert David; Fabbri, Darren Ross; Cruthirds, Daniel Ramsay, Speech analyzing system with speech codebook.
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  31. Laroia, Rajiv; Yeo, Boon-Lock, Speech coder methods and systems.
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  32. Pasi Ojala JP, Speech coding.
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  33. Grabb Mark Lewis ; Koch Steven Robert ; Brooksby Glen William ; Zinser ; Jr. Richard Louis, Speech coding system and method including spectral quantizer.
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  34. Kolesnik Victor D. (St. Petersburg RUX) Krachkovsky Victor Yu (St. Petersburg RUX) Kudrjashov Boris D. (St. Petersburg RUX) Ovsjannikov Eugene P. (St. Petersburg RUX) Trojanovsky Boris K. (St. Peters, Speech compressor using trellis encoding and linear prediction.
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  35. Cong Lin ; Asghar Safdar M., Split matrix quantization with split vector quantization error compensation and selective enhanced processing for robust speech recognition.
    상세보기
  36. Wang,Tian; Koishida,Kazuhito; Khalil,Hosam A.; Sun,Xiaoqin; Chen,Wei Ge, Sub-band voice codec with multi-stage codebooks and redundant coding.
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  37. Bonnard, Pierre; Bourmeyster, Ivan; Fourquin, Xavier; Ladouce, Pierre, Telecommunication terminal able to modify the voice transmitted during a telephone call.
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  38. Gournay, Philippe; Bessette, Bruno; Salami, Redwan, Variable bit rate LPC filter quantizing and inverse quantizing device and method.
    상세보기
  39. George E. Bryan ; McCree Alan V. ; Viswanathan Vishu R., Variable framerate parameter encoding.
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  40. Aoyagi Hiromi,JPX, Vocal tract prediction coefficient coding and decoding circuitry capable of adaptively selecting quantized values and in.
    상세보기
  41. Barron, David L.; Yip, William Chunhung; Kennedy, Paul Lopez, Voice decoder and method for detecting channel errors using spectral energy evolution.
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