Data processing: speech signal processing – linguistics – language – Speech signal processing – For storage or transmission
Patent
1996-02-23
1998-09-08
Hudspeth, David R.
Data processing: speech signal processing, linguistics, language
Speech signal processing
For storage or transmission
704218, G10L 908
Patent
active
058060235
ABSTRACT:
A method used by a controller (112) and a communication receiver (122) for performing a time-scale modification of a signal comprised of an input stream of signal representations to form an output stream of signal representations. An output block of S.sub.o signal representations is selected from the output stream for use in overlapping signal representations from the output block with S.sub.o contiguous signal representations of the input stream, the S.sub.o contiguous signal representations beginning with a predetermined signal representation. The overlapping process includes determining (406) a maximum similarity measure between selected portions of the input and the output streams, applying (410) a weighting function to each, and summing the results of each. The overlapping process further includes replacing (412) a selected portion of the output stream with the latter summation, and selecting (414) a new set of samples from the input stream to append to the output stream.
REFERENCES:
patent: 4839923 (1989-06-01), Kotzin
patent: 5068898 (1991-11-01), Dejmek et al.
patent: 5175769 (1992-12-01), Hejna, Jr. et al.
patent: 5216744 (1993-06-01), Alleyne et al.
patent: 5239306 (1993-08-01), Siwiak et al.
patent: 5282205 (1994-01-01), Kuznicki
patent: 5473727 (1995-12-01), Nishiguchi et al.
patent: 5524274 (1996-06-01), Takahashi et al.
patent: 5546411 (1996-08-01), Leitch et al.
patent: 5606729 (1997-02-01), D'Amico et al.
patent: 5613218 (1997-03-01), Li et al.
patent: 5629935 (1997-05-01), Oh
patent: 5630013 (1997-05-01), Suzuki et al.
patent: 5633873 (1997-05-01), Kay et al.
Verhelst and Roelands, An Overlap-Add Technique Based On Waveform Similarity (WSOLA) For High Quality Time-Scale Modification of Speech, IEEE 1993, pp. II-554-II-557.
Oppenheim and Schafer, Changing the Sampling Rate Using Discrete-Time Processing, Discrete-Time Signal Processing, 1989, Ch. 3.6, pp. 101-112.
Breeden R. Louis
Hudspeth David R.
Motorola Inc.
Opsasnick Michael M.
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