Data processing: speech signal processing – linguistics – language – Speech signal processing – For storage or transmission
Patent
1996-05-21
1998-09-15
Hudspeth, David R.
Data processing: speech signal processing, linguistics, language
Speech signal processing
For storage or transmission
704218, 704219, 704220, 704264, G10L 900, G10L 914
Patent
active
058094598
ABSTRACT:
A method and apparatus (100) for pitch-epoch-synchronous source-filter speech encoding by means of error component modeling methods (310) which capture fundamental orthogonal (uncorrelated) basis elements of an excitation source waveform. A periodic waveform model (318) along with four orthogonal error waveforms, desirably including phase error (319), ensemble error (321), standard deviation error (323), and mean error (324) waveforms, are incorporated together to form a complete description of the excitation. These error waveforms (319,321, 323, 324) represent those portions of the excitation that are not represented by the purely periodic model. By thus orthogonalizing the error components, the perceptual effect of each element is isolated from the composite set, and can thus be encoded separately. In addition to high-quality, fixed-rate operation, the identity-system capability and low complexity of the speech encoding method and apparatus make them applicable to variable-rate applications without changing underlying modeling methods.
REFERENCES:
patent: 5479559 (1995-12-01), Fette et al.
patent: 5504834 (1996-04-01), Fette et al.
patent: 5579437 (1996-11-01), Fette et al.
patent: 5596676 (1997-01-01), Swaminathan et al.
patent: 5602959 (1997-02-01), Bergstrom et al.
patent: 5623575 (1997-04-01), Fette et al.
An article entitled "Transformation and Decomposition of the Speech Signal For Coding", by W. Kleign and J. Haagen from IEEE Signal Processing Letters, vol. 1, No. 9, Sep. 1994.
Allen Gersho, "Advances in Speech and Audio Compression," Proc. IEEE, pp. 900-918, Jun. 1994.
Andreas S. Spanias, "Speech Coding: A Tutorial Review," Proc. IEEE, pp. 1541-1582, Oct. 1994.
Peter Noll, "Digital Audio Coding for Visual Communications," IEEE, pp. 925-943, Jun. 1995.
An article entitled "Statistical Theory Of Communication" by Y. W. Lee, John Wiley & Sons, Inc., Second Printing, Dec. 1961, (60-10318).
An article entitled "Probability, Random Variables, And Random Signal Principles" by Peyton Z. Peebles, Jr., Ph.D., McGraw-Hill Book Company, Second Edition, Copyright 1987, 1980, (ISBN 0-07-049210-0).
An article entitled "Numerical Recipes In C" by William H. Press et al., Cambridge University Press, copyright 1988, (87-33844).
Abousleman Glen Patrick
Bergstrom Chad Scott
Gifford Carl Steven
Pattison Richard James
Hudspeth David R.
Motorola Inc.
Smits Talivaldis Ivars
Whitney Sherry J.
LandOfFree
Method and apparatus for speech excitation waveform coding using does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for speech excitation waveform coding using, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for speech excitation waveform coding using will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-104040