Sampling rate independent speech recognition

Details Sampling rate independent speech recognition Sampling rate independent speech recognition

2011-07-19

2011-07-19

Lerner, Martin (Department: 2626)

Data processing: speech signal processing, linguistics, language

Speech signal processing

Recognition

C704S205000, C704S221000, C704S243000

Reexamination Certificate

active

07983916

ABSTRACT:
A sampling-rate-independent method of automated speech recognition (ASR). Speech energies of a plurality of codebooks generated from training data created at an ASR sampling rate are compared to speech energies in a current frame of acoustic data generated from received audio created at an audio sampling rate below the ASR sampling rate. A codebook is selected from the plurality of codebooks, and has speech energies that correspond to speech energies in the current frame over a spectral range corresponding to the audio sampling rate. Speech energies above the spectral range are copied from the selected codebook and appended to the current frame.

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