Sprachsignalverarbeitungsvorrichtung zum Herausschneiden von einem Sprachsignal aus einem verrauschten Sprachsignal

摘要

There is disclosed a signal processing apparatus for cutting out a speech signal from an inputted noisy speech signal. In the signal processing apparatus, a band division process including a Fourier transformation is performed for an inputted speech signal, thereby outputting spectrum signals of plural channels, and a cepstrum analysis process is performed for the spectrum signals of plural channels, thereby outputting a cepstrum analysis result. Thereafter, a speech signal interval of the inputted noisy speech signal is detected in response to the cepstrum analysis result, and then, a speech signal is cut out from the inputted noisy speech signal according to the detected speech signal interval.