SPEECH ENHANCEMENT

摘要

A speech signal processing system is described for use with automatic speech recognition and hands free speech communication. A signal pre-processor module transforms an input microphone signal into corresponding speech component signals. A noise suppression module applies noise reduction to the speech component signals to generate noise reduced speech component signals. A speech reconstruction module produces corresponding synthesized speech component signals for distorted speech component signals. A signal combination block adaptively combines the noise reduced speech component signals and the synthesized speech component signals based on signal to noise conditions to generate enhanced speech component signals for automatic speech recognition and hands free speech communication.

主权项

1. A computer-implemented method employing at least one hardware implemented computer processor for speech signal processing, the method comprising:
transforming an input microphone signal into corresponding speech component signals; applying noise reduction to the speech component signals to generate noise reduced speech component signals; producing corresponding synthesized speech component signals for distorted speech component signals; and adaptively combining the noise reduced speech component signals and the synthesized speech component signals based on signal to noise conditions and extracted features from the input to generate an enhanced speech component signals for automatic speech recognition and hands free speech communication.