Integrated polispectrum on speech recognition
A. Moreno, M. Rutllan · 2002
The paper deals with the application of higher order statistics (HOS) in a recognition system where the speech input is corrupted by noise. Cumulants, bispectrum and trispectrum are being used in noisy speech signal processing because of their immunity to noise. The authors introduce the use of integrated polispectrum and trispectrum in a recognition system based on a filter bank analysis. The results improve other HOS based methods without a substantial increase of the computational load.