Influencing automatic speech recognition signal-to-noise levels

摘要

A system for influencing a signal-to-noise ratio (SNR) associated with a signal input to an automatic speech recognition device is provided. The system includes a normalized energy module that determines a normalized energy measurement based upon a spectrum of frequency-domain complex coefficients, the coefficients generated by the automatic speech recognition device. The system also includes an SNR module that generates an SNR measurement. The SNR measurement can be based upon a comparison of speech and non-speech portions of the signal input to the automatic speech recognition device. The system further includes a cue module that provides a cue to a user of the automatic speech recognition device, the cue being based upon the SNR measurement.