Data processing: speech signal processing – linguistics – language – Speech signal processing – For storage or transmission
Patent
1996-06-28
1998-06-30
Hudspeth, David R.
Data processing: speech signal processing, linguistics, language
Speech signal processing
For storage or transmission
704230, 704203, 704201, G10L 500
Patent
active
057748438
ABSTRACT:
An audio signal is recorded in a semiconductor memory in a plurality of hierarchical levels, with the lowest level being adequate for reproduction with a certain reduced degree of fidelity. Successively higher hierarchial levels provide successively greater fidelity when reproduced. When the memory has been determined to have reached maximum capacity, recording continues by overwriting the highest hierarchical level of data currently stored in the memory with lower hierarchical levels of new data. A code is recorded in the memory, indicating the number of hierarchical levels recorded therein, for subsequent reproduction. The audio signal can furthermore be recorded in variable-length frames and reproduced at high speed by reading every N-th frame, N being a positive integer, or by reading only frames having at least a certain minimum length.
REFERENCES:
patent: 4644494 (1987-02-01), Muller
patent: 4658424 (1987-04-01), Henderson
patent: 4718087 (1988-01-01), Papamichalis
patent: 4790016 (1988-12-01), Mazor et al.
patent: 4965830 (1990-10-01), Barham et al.
patent: 5027406 (1991-06-01), Roberts et al.
patent: 5040217 (1991-08-01), Brandenburg et al.
patent: 5142656 (1992-08-01), Fielder et al.
patent: 5185800 (1993-02-01), Mahieux
patent: 5230038 (1993-07-01), Fielder et al.
patent: 5285498 (1994-02-01), Johnston
patent: 5341457 (1994-08-01), Hall, II et al.
patent: 5394473 (1995-02-01), Davidson
patent: 5414758 (1995-05-01), Kuok
Von Jochen Meyer; "Realization of Hierarchical Language-Networks" (Realisierung einer Hierarchie aus Sprachnetzwerken); 1990; pp. 200-207.
Tan et al. "Digital audio tape for data storage", IEEE Spectrum, vol. 26, iss. 10, pp. 34-38 (Oct. 1989).
Takahashi, "Digital still hdtv disc system", IEEE Transactions of Consumer Electronics, vol. 34, iss. 1, pp. 64-71 (Feb. 1988).
Normile et al. "Image Compression Using Coarse Grain Parallel Processing"; ICASSP 91, pp. 1121-1124 vol. 2, 14-17 May 1991.
Tamitani et al., "An Encoder/Decoder Chip Set for the MPEG Video Standard"; ICASSP-92, pp. 661-664, vol. 5, 23-26 Mar. 1992.
Matsushita et al., A Digital Audio Signal Processor For Sound Field Controls; IEEE Transaction on consumer electronics, vol. 37 issue 1, pp. 28-31.
Suzuki et al. "Comparative Study of Transform Coding of Super High Definition Images"; ICASSP 90. pp. 2257-2260, vol. 4, 3-6 Apr. 1990.
Foster et al., "Waveform Coding Using Time Code Multiplexing"; Twenty-second southeastern symposium on system theory, 1990, pp. 206-208.
Kondo et al., "New ADRC for Consumer Digital VCR"; Eighth international conference on video, audio and data recording, 1990, pp. 144-150.
Veldhuis, "Bit Rates in Audio Source Coding"; IEEE Journal on Selected Areas in Communications, vol. 10, Iss. 1, Jan. 1992, pp. 86-96.
Ishida Yoshinobu
Ono Yukari
Sugiyama Kazuhiro
Chawan Vijay B.
Hudspeth David R.
Mitsubishi Denki & Kabushiki Kaisha
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