Amplitude masking of spectra for speech recognition method...

Details Amplitude masking of spectra for speech recognition method... Amplitude masking of spectra for speech recognition method...

2006-03-14

2006-03-14

Dorvil, Richemond (Department: 2654)

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

C704S243000

Reexamination Certificate

active

07013272

ABSTRACT:
In a speech recognition platform, a masking unit17can be utilized to mask noisy content within an audio sample. By masking such noise in a dynamic but predictable manner, valid content can be preserved while largely overcoming the random and detrimental presence of noise. In one embodiment, speech recognition features are extracted pursuant to a hierarchical process that localizes, at least to some extent, some of the resultant features from other resultant features. As a result, noisy or otherwise unreliable information corresponding to the audio sample will not be leveraged unduly across the entire feature set. In another embodiment, an average energy value for processed samples is calculated with individual energy values that are downwardly weighted when such individual energy values are likely representative of noise.

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“The IEEE Standard Dictionary of Electrical and Electronic Terms,” Sixth Ed., Dec. 1996, pp. 408-409, 585. 696.

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