Audio signal processing apparatus

Details Audio signal processing apparatus Audio signal processing apparatus

2006-08-15

2006-08-15

Abebe, Daniel (Department: 2626)

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

C704S501000

Reexamination Certificate

active

07092876

ABSTRACT:
In an audio signal encoding apparatus, a first audio signal and a second audio signal are added into an addition-result signal. The first audio signal is subtracted from the second audio signal to generate a subtraction-result signal. A first difference signal is generated which represents a difference in the addition-result signal. A second difference signal is generated which represents a difference in the subtraction-result signal. A plurality of first predictors have different prediction characteristics respectively, and are responsive to the first difference signal for generating first different prediction signals for the first difference signal, respectively. A plurality of first subtracters operate for generating first prediction-error signals representing differences between the first difference signal and the first different prediction signals, respectively. A first minimum prediction-error signal representative of a smallest difference is selected from among the first prediction-error signals. A plurality of second predictors have different prediction characteristics respectively, and are responsive to the second difference signal for generating second different prediction signals for the second difference signal, respectively. A plurality of second subtracters operate for generating second prediction-error signals representing differences between the second difference signal and the second different prediction signals, respectively. A second minimum prediction-error signal representative of a smallest difference is selected from among the second prediction-error signals.

REFERENCES:
patent: 5115469 (1992-05-01), Taniguchi et al.
patent: 5285498 (1994-02-01), Johnston
patent: 5511095 (1996-04-01), Inoue et al.
patent: 5796842 (1998-08-01), Hanna
patent: 5856980 (1999-01-01), Doyle
patent: 6118879 (2000-09-01), Hanna
patent: 6122380 (2000-09-01), Pedlow, Jr.
patent: 6169973 (2001-01-01), Tsutsui et al.
patent: 6357045 (2002-03-01), Devaney
patent: 6463410 (2002-10-01), Fuchigami
patent: 11-109996 (1999-04-01), None
Andreas S. Spanias, “Speech Coding: A Tutorial Review”, Proceedings of the IEEE, vol. 82, No. 10, Oct. 1, 1994, pp. 1541-1582.
“Lossless Coding For Audio Discs” by P. Craven et al.; J. Audio Eng. Soc., vol. 44, No. 9, Sep. 1996; pp. 706-720.

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