Speech coding apparatus and speech decoding apparatus

Details Speech coding apparatus and speech decoding apparatus Speech coding apparatus and speech decoding apparatus

1998-02-26

2000-05-09

Hudspeth, David R.

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

704230, 704218, 704222, 704217, 381 941, G10L 1520

Patent

active

060616482

ABSTRACT:
In a speech coding apparatus, an input device inputs a mixed speech signal of a plurality of speakers. A separating device analyzes period characteristics of the input mixed speech signal, and separates the same signal into a plurality of single speech signals each associated with a corresponding one of the speakers, based on a result of the analysis. A first extracting device extracts source speech characteristic parameters included in each of the single speech signals. A second extracting device extracts a generic vocal-tract characteristic parameter from the input mixed speech signal. In a speech decoding apparatus, a first input device inputs the source speech characteristic parameters for each of the speakers. A second input device inputs the vocal-tract characteristic parameter. A source speech decoder decodes source speech signals of the respective speakers, based on the source speech characteristic parameters for the speakers and forms a source speech signal for the speakers by synthesizing the decoded source speech signals of the respective speakers. A vocal-tract filter filters the source speech signal for the speakers, based on the generic vocal-tract characteristic parameter, so as to decode a mixed speech signal indicative of mixed speech of the speakers.

REFERENCES:
patent: 4304965 (1981-12-01), Blanton et al.
patent: 4544919 (1985-10-01), Gerson
patent: 4903303 (1990-02-01), Taguchi
patent: 4944036 (1990-07-01), Hyatt
patent: 5127053 (1992-06-01), Koch
patent: 5539832 (1996-07-01), Weinstein et al.
patent: 5596676 (1997-01-01), Swaminathan et al.
patent: 5706402 (1998-01-01), Bell
patent: 5717819 (1998-02-01), Emeott et al.
patent: 5774837 (1998-06-01), Yeldener et al.
patent: 5797118 (1998-08-01), Saito
patent: 5917919 (1999-06-01), Rosenthal
Widrow et al., ("Adaptive Noise Cancelling : Principles and Applications," IEEE vol. 63, No. 12, Dec. 1975, pp. 1692-1716).

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