Discourse Non-Speech Sound Identification and Elimination

摘要

An acoustic signal is subjected to filtration whereby low frequency sounds such as respiration are removed. Intense acoustic sounds such as coughing are also removed, and ultrasonic carrier modulation and demodulation is also performed to increase the saliency of speech sounds. By removing non-speech sounds from an acoustic signal comprising speech, a method is disclosed for improving the functioning of devices such as speech recognition machinery. Devices for implementing such techniques are also disclosed.