Using signal to noise ratio of a speech signal to adjust...

Details Using signal to noise ratio of a speech signal to adjust... Using signal to noise ratio of a speech signal to adjust...

2005-05-24

2005-05-24

Knepper, David D. (Department: 2654)

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

C704S207000

Reexamination Certificate

active

06898566

ABSTRACT:
There are provided speech coding methods and systems for estimating a plurality of speech parameters of a speech signal for coding the speech signal using one of a plurality of speech coding algorithms, the plurality of speech parameters includes pitch information, the plurality of speech parameters is calculated using a plurality of thresholds. An example method includes estimating a background noise level in the speech signal to determine a signal to noise ratio (SNR) for the speech signal, adjusting one or more of the plurality of thresholds based on the SNR to generate one or more SNR adjusted thresholds, analyzing the speech signal to extract the pitch information using the one or more SNR adjusted thresholds, and repeating the estimating, the adjusting and the analyzing to code the speech signal using one the plurality of speech coding algorithms.

REFERENCES:
patent: 4630305 (1986-12-01), Borth et al.
patent: 4811404 (1989-03-01), Vilmur et al.
patent: 5214741 (1993-05-01), Akamine et al.
patent: 5668927 (1997-09-01), Chan et al.
patent: 5727073 (1998-03-01), Ikeda
patent: 5742734 (1998-04-01), DeJaco et al.
patent: 5911128 (1999-06-01), DeJaco
patent: 5963901 (1999-10-01), Vahatalo et al.
patent: 5991718 (1999-11-01), Malah

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