Inverse filtering method, synthesis filtering method,...

Details Inverse filtering method, synthesis filtering method,... Inverse filtering method, synthesis filtering method,...

2007-08-28

2007-08-28

Malzahn, D. H. (Department: 2193)

Electrical computers: arithmetic processing and calculating

Electrical digital calculating computer

Particular function performed

C708S322000

Reexamination Certificate

active

10476041

ABSTRACT:
An inverse filtering method, comprising: generating a first filtered signal based on an input signal; and combining the first filtered signal with the input signal for obtaining a residual signal. The generating comprises: generating at least two second filtered signals, each of said second filtered signals not significantly delayed in time relative to each other, the generating being stable and causal; and amplifying at least one of the second filtered signals with a prediction coefficient.

REFERENCES:
patent: 4809209 (1989-02-01), White
patent: 5285475 (1994-02-01), Kurokami
patent: 5553014 (1996-09-01), De Leon et al.
patent: 6035312 (2000-03-01), Hasegawa
Flanagan “Speech Analysis Synthesis and Perception” 1972, pp. 390-395.

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