Patent
1993-12-01
1997-09-30
MacDonald, Allen R.
395 291, G10L 302
Patent
active
056733640
ABSTRACT:
A speech compression/decompression system and method which do not require special hardware are described. The compression unit represents an input audio signal as a collection of parameters, wherein the parameters are a remnant excitation pulse sequence, a set of spectral coefficients and a set of pitch parameters. The decompression unit utilizes the pitch parameters and remnant excitation pulse sequence to produce a reconstructed excitation signal. The decompression unit also utilizes the spectral coefficients to filter the reconstructed excitation signal into a speech waveform. The compression unit includes a short-term predictor, a two-step long-term predictor and a multi-pulse analyzer.
REFERENCES:
patent: 4130729 (1978-12-01), Gagnon
patent: 4140876 (1979-02-01), Gognon
patent: 4752956 (1988-06-01), Sluijter
patent: 4811396 (1989-03-01), Yatsuzuka
patent: 4847905 (1989-07-01), Lefevre et al.
patent: 4868867 (1989-09-01), Davidson et al.
patent: 4924508 (1990-05-01), Crepy et al.
patent: 4932061 (1990-06-01), Kroon et al.
patent: 5020051 (1991-05-01), Beesley et al.
patent: 5125030 (1992-06-01), Nomura et al.
patent: 5371853 (1994-12-01), Kao et al.
Sadaoki Furui, "Digital Speech Processing, Synthesis, and Recognition, "Marcel Dekker, Inc., New York, NY, 1989.
Chawan Vijay B.
MacDonald Allen R.
The DSP Group Ltd.
LandOfFree
System and method for compression and decompression of audio sig does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System and method for compression and decompression of audio sig, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for compression and decompression of audio sig will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2263111