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Speech coding, reconstruction and recognition using acoustics and electromagnetic waves

Patent ·
OSTI ID:871425
 [1];  [2]
  1. Berkeley, CA
  2. Danville, CA
+ Show Author Affiliations

The use of EM radiation in conjunction with simultaneously recorded acoustic speech information enables a complete mathematical coding of acoustic speech. The methods include the forming of a feature vector for each pitch period of voiced speech and the forming of feature vectors for each time frame of unvoiced, as well as for combined voiced and unvoiced speech. The methods include how to deconvolve the speech excitation function from the acoustic speech output to describe the transfer function each time frame. The formation of feature vectors defining all acoustic speech units over well defined time frames can be used for purposes of speech coding, speech compression, speaker identification, language-of-speech identification, speech recognition, speech synthesis, speech translation, speech telephony, and speech teaching.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA
DOE Contract Number:
W-7405-ENG-48
Assignee:
Regents of University of California (Oakland, CA)
Patent Number(s):
US 5729694
OSTI ID:
871425
Country of Publication:
United States
Language:
English

References (8)

A hybrid time-frequency domain articulatory speech synthesizer journal July 1987
Review of text‐to‐speech conversion for English journal September 1987
Technologies for multimedia communications journal April 1994
An experimental field trial of a large vocabulary speaker independent recognition system conference August 2002
The inverse problem for the vocal tract: Numerical methods, acoustical experiments, and speech synthesis journal March 1983
Speech Analysis Synthesis and Perception book January 1965
A model of articulatory dynamics and control journal January 1976
A new inverse‐filtering technique for deriving the glottal air flow waveform during voicing journal June 1973

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Related Subjects

/705/704/
acoustic
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electromagnetic
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