Patent
1994-01-28
1997-05-20
Mac Donald, Allen R.
395 235, G10L 918
Patent
active
056320043
ABSTRACT:
A method and apparatus for encoding/decoding of background sounds. The background sounds are encoded/decoded in a digital frame based speech encoder/decoder. First, it is determined whether the signal that is directed to the encoder/decoder represents primarily speech or background sounds. When the signal directed to the encoder/decoder represents primarily background sounds, the temporal variation between consecutive frames and/or the domain of at least one filter defining parameter is restricted.
REFERENCES:
patent: 4363122 (1982-12-01), Black et al.
patent: 4700361 (1987-10-01), Todd et al.
patent: 5007094 (1991-04-01), Hsueh et al.
patent: 5142582 (1992-08-01), Asakawa et al.
patent: 5218619 (1993-06-01), Dent
patent: 5295225 (1994-03-01), Kane et al.
patent: 5341456 (1994-08-01), DeJaco
Procedings of the IEEE 1990 National Aerospace and Electronics Conference; Folds, D. J. "Advanced audio displays in aerospace systems: technology requirements and expected benefits", p. 739-743 vol. 2 May 1990.
ICASSP-93. 1993 IEEE International Conference on Acoustics, Speech, and Signal Processing; Nishiguchi et al., "Vector Quantized MBE with simplified V/UV division at 3.0 kbits/s", pp. 151-154 vol. 2 Apr. 1993.
Vector quantized MBE with simplified V/UV division at 3.0 KBPS, Nishigushi et al., ICASSP-93. 1993 IEEE International Conference on Acoustics, Speech and Signal processing, Apr. 1993, pp. 151-154 vol. 2 Apr. 1993.
Rabiner, Schafer: "Digital Processing of Speech Signals", Chapter 8, Prentice-Hall, 1978.
Strobach: "New Forms of levinson and Schur Algorithms", IEEE SP Magazine, Jan. 1991, pp. 12-36.
Le Roux, Gueguen: "A Fixed Point Computation of Partial Correlation Coefficients", IEEE Transactions of Acoustics, Speech and Signal Processing, vol. ASSP-26, No. 3, pp. 257-259, Jun. 1977.
Atal et al, eds: "Advances in Speech Coding", Kluwer Academic Publishers, 1991, pp. 69-79.
Campbell et al.: "The DoD4.8 KBPS Standard (Proposed Federal Standard 1016)", pp. 121-134, 1991.
Salami: "Binary Pulse Excitation: A Novel Approach to Low Complexity CELP Coding of Speech", Kluwer Academic Publishers, pp. 145-156, 1991.
Adoul, Lamblin: "A Comparison of Some Algebraic Structures for CELP Coding of Speech", Proc. International Conference on Acoustics, Speech and Signal Processing 1987, pp. 1953-1956.
Dorvil Richemond
Mac Donald Allen R.
Telefonaktiebolaget LM Ericsson
LandOfFree
Method and apparatus for encoding/decoding of background sounds 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 encoding/decoding of background sounds, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for encoding/decoding of background sounds will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1730508