SYSTEM FOR MEASURING SIGNAL TO NOISE RATIO IN A SPEECH SIGNAL

摘要

A system for measuring speech content in sound. The system determining time local speech-to noise ratio for one or more bands. The system using a signal related to the power of the input signal or envelope and generating a time- dependent mean of the envelope and deviation of the envelope from the mean t o estimate a time-dependent speech-to-noise ratio. The system providing single band or multiband speech-to-noise estimates for signal processing applications. The system realizable in analog, digital or analog and digital combinations.