Zpracování řečových signálů měřicími mikrofony pomocí NI 9234 v LabVIEW

Abstract

The bachelor thesis deals with problems of speech processing and adaptive filtration. In this work the literary research of the speech signal in the time and frequency domain is processed. The work is implemented in both online and offline mode in LabVIEW to verify adaptive processing. The online mode program is used to create a database of speech recordings and various interferences from the outdoor environment as well as from the home. The offline application then serves to test adaptive algorithms. The criterion for comparing the efficiency of individual algorithms is primarily to increase the signal to noise ratio. To test the filtration rate, a global SNR method was chosen.