Electrical audio signal processing systems and devices – Hearing aids – electrical – Specified casing or housing
Patent
1994-05-31
1997-02-11
Tung, Kee M.
Electrical audio signal processing systems and devices
Hearing aids, electrical
Specified casing or housing
395 23, 395 238, 395 239, 395 273, 395 234, 395 228, 395 271, 381 38, 381 36, G10L 302
Patent
active
056029616
ABSTRACT:
An apparatus and method of coding speech. The apparatus includes a first circuit being coupled to receive a first signal, the first signal corresponds to the speech signal. The first circuit is for generating a first set of parameters corresponding to the first frame. The apparatus includes a second circuit, being coupled to receive a second signal and the first set of parameters, the second signal corresponding to the speech signal, and the second circuit is for generating a third signal. The apparatus further includes a pulse train analyzer, being coupled to the second circuit, for generating a third match value, a third set of parameters, and a third excitation value. The apparatus further including a fourth circuit, being coupled to the second circuit, for generating a fourth match value, a fourth set of parameters, and a fourth excitation value. The apparatus further including a fifth circuit, being coupled to the third circuit and the fourth circuit, for selecting a mode corresponding to a match value. The apparatus further including a sixth circuit, being coupled to the fifth circuit, for selecting a selected set of parameters and a selected excitation corresponding to the mode. The apparatus further including a seventh circuit, being coupled to the first circuit and the sixth circuit, for generating an encoded signal responsive to the selected set of parameters and the mode.
REFERENCES:
patent: 4472832 (1984-09-01), Atal et al.
patent: 4736428 (1988-04-01), Deprettere et al.
patent: 4790016 (1988-12-01), Mazor et al.
patent: 4817157 (1989-03-01), Gerson
patent: 4868867 (1989-09-01), Davidson et al.
patent: 4912764 (1990-03-01), Hartwell et al.
patent: 4914701 (1990-04-01), Zibman
patent: 4924508 (1990-05-01), Crepy et al.
patent: 4932061 (1990-06-01), Kroon et al.
patent: 4944013 (1990-07-01), Gouvianakis et al.
patent: 4969192 (1990-11-01), Chen et al.
patent: 4980916 (1990-12-01), Zinser
patent: 5012518 (1991-04-01), Liu et al.
patent: 5060269 (1991-10-01), Zinser
patent: 5073940 (1991-12-01), Zinser et al.
patent: 5177799 (1993-01-01), Naitoh
patent: 5187745 (1993-02-01), Yip et al.
patent: 5195137 (1993-03-01), Swaminathan
patent: 5199076 (1993-03-01), Taniguchi et al.
patent: 5222189 (1993-06-01), Fielder
patent: 5233659 (1993-08-01), Ahlberg
patent: 5235671 (1993-08-01), Mazor
patent: 5255339 (1993-10-01), Fette et al.
patent: 5369724 (1994-11-01), Lim
patent: 5388181 (1995-02-01), Anderson et al.
patent: 5394508 (1995-02-01), Lim
patent: 5414796 (1995-05-01), Jacobs et al.
Richard L. Zinser, Steven R. Koch, Celp Coding at 4.0 KB/SEC and Below: Improvements to FS-1016, IEEE 1992, pp. I-313-I316.
Peter Lupini, Neil B. Cox, Vladimir Cuperman, A Multi-Mode Variable Rate Celp Coder Based on Frame Classification, pp. 406-409.
Shihua Wang, Allen Gersho, Improved Phonetically-Segmented Vector Excitation Coding at 3.4KB/S, IEEE 1992, pp. I-349I352.
Zhang Xiongwei, Chen Xianzhi, A New Excitation Model for LPC Vocoder at 2.4 KB/S, pp. I65-I68.
Y. J. Liu, On Reducing The Bit Rate of a Celp-Based Speech Coder, IEEE 1992, pp. I49-I52.
Yunus Hussain, Nariman Farvardin, Finite-State Vector Quantization Over Noisy Channels and its Application to LSP Parameters, IEEE 1992, pp. II-133-II-136.
Jesper Haagen, Henrik Neilsen, Steffen Duus Hansen, Improvements in 2.4 KBPSD High-Quality Speech Coding, IEEE 1992, pp. II145-II-148.
Malone, et al. "Trellis-Searched Adaptive Prediction Coding," IEEE (Dec. 1988), pp. 0566-0570.
Malone, et al. "Enumeration and Trellis Searched Coding Schemes for Speech LSP Parameters," IEEE (Jul. 1993), pp. 304-314.
Campbell, Joseph P. Jr. "The New 4800 bps Voice Coding Standard," Military & Government Speech Tech '89 (Nov. 14, 1989), pp. 1-4.
Atal, Bishnu S. "Predictive Coding of Speech at Low Bit Rates," IEEE Transactions on Communications (Apr. 1982), vol. Com-30, No. 4, pp. 600-614.
Davidson, Grant, "Complexity Reduction Methods for Vector Excitation Coding," IEEE (1986), pp. 3055-3058.
Lynch, Thomas J. "Data Compression Techniques and Applications," Van Nostrand Reinhold (1985), pp. 32-33.
Bocharova Irina E.
Kolesnik Victor D.
Kovalov Sergei I.
Krachkovsky Victor Y.
Kudryashov Boris D.
Alaris Inc.
GT Technology
Tung Kee M.
LandOfFree
Method and apparatus for speech compression using multi-mode cod 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 compression using multi-mode cod, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for speech compression using multi-mode cod will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-349342