Data processing: speech signal processing – linguistics – language – Speech signal processing – For storage or transmission
Patent
1997-05-23
1999-06-01
Dorvil, Richemond
Data processing: speech signal processing, linguistics, language
Speech signal processing
For storage or transmission
704230, 704205, G10L 900
Patent
active
059096640
ABSTRACT:
In an encoder, multiple channels of audio information representing multidimensional sound fields are split into subband signals and the subband signals in one or more subbands are combined to form composite signals. The composite signals, the subband signals not combined into a composite signal and information describing the spectral levels of subband signals combined into composite signals are assembled into an encoded output signal. The spectral level information conveys either the amplitude or power of the combined subband signals or the apparent direction of the sound field represented by the combined subband signals. In digital implementations, adaptive bit allocation may be used to reduce the informational requirements of the encoded signal.
REFERENCES:
patent: 1124580 (1915-01-01), Ahmet
patent: 1793772 (1931-02-01), Bouma
patent: 1850130 (1932-03-01), Gannett
patent: 2361490 (1944-10-01), Mueller
patent: 2714633 (1955-08-01), Fine
patent: 3067287 (1962-12-01), Percival
patent: 3067292 (1962-12-01), Minter, II
patent: 3836715 (1974-09-01), Ito et al.
patent: 3845572 (1974-11-01), McCanney
patent: 4236039 (1980-11-01), Cooper
patent: 4251688 (1981-02-01), Furner
patent: 4256389 (1981-03-01), Engebretson
patent: 4455649 (1984-06-01), Esteban et al.
patent: 5323396 (1994-06-01), Lokhoff
patent: 5384725 (1995-01-01), Coifman et al.
patent: 5524054 (1996-06-01), Spille
patent: 5606618 (1997-02-01), Lokhoff et al.
patent: 5636324 (1997-06-01), Teh et al.
patent: 5737720 (1998-04-01), Miyamori et al.
"Musicam, Detailed description of sound coding algorihm," ISO/IEC JTC1/SC2/WG8, MPEG 89/206, Dec. 28, 1989.
"Coding of Moving Pictures and Associated Audio," ISO/IEC JTC1/SC2/WG11, MPEG 90/00, Dec. 1990, appendix pp. 100-101 and two figures.
Theile, "HDTV Sound Systems: How Many Channels?" AES 9th Int. Conf., Detroit, Feb. 1991, pp. 217-232.
van der Waal, "Subband Coding of Stereophonic Digital Audio Signals," IEEE Int. Conf. on Acoust., Speech and Signal Proc., Toronto, May 1991, pp. 3601-3604.
Theile, et al., "Musicam-Surround: A Multi-Channel Stereo Coding Method," AES 92dn Conv., Vienna, Mar. 1992, Preprint No. 3337.
Percival, "A Compressed-Bandwidth Stereophonic System for Radio Transmission," Institute of Electrical Engineers (U.K.), Paper No. 3152e, Nov. 1959, pp. 234-238.
Kohsaka, et al., "Sound-Image Loacalization in Multichannel Matrix Reproduction," J.of Audio Eng. Soc., 1972, vol. 20, No. 7, pp. 542-548.
Geluk, "Compatible Stereophonic Broadcasting Systems for Spatial Reporduction," J. of Audio Eng. Soc., vol. 28, No. 3, pp. 136-139.
Press, et al., "Numerical Recipes: The Art of Scientific Computing," Cambridge University Press, New York, 1986, pp. 52-64.
Davis Mark Franklin
Dolby Ray Milton
Todd Craig Campbell
Dolby Ray Milton
Dolby Laboratories Licensing Corporation
Dorvil Richemond
Lathrop David N.
LandOfFree
Method and apparatus for encoding and decoding audio information 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 and decoding audio information, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for encoding and decoding audio information will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-962401