Title :
Discrete all-pole modeling using higher-order spectra
Author :
Akgül, Tayfun ; El-Jaroudi, Amro
Author_Institution :
Dept. of Electr. Eng., Pittsburgh Univ., PA, USA
Abstract :
Discrete all-pole modeling using higher-order spectra (DAPHOS) is presented as a method for fitting all-pole envelopes to harmonic or discrete bispectra encountered in the analysis of voiced segments of speech. DAPHOS modeling combines the superior spectral envelope estimation capabilities of the DAP modeling with the Gaussian noise suppression properties of higher-order spectra. Consequently, DAPHOS outperforms DAP modeling in environments with additive Gaussian noise (white or colored) even when the noise parameters are unknown. The performance of DAPHOS modeling is compared to that of DAP modeling in both noisy and noise-free environments
Keywords :
interference suppression; poles and zeros; random noise; spectral analysis; speech analysis and processing; white noise; Gaussian noise suppression properties; additive Gaussian noise; all-pole envelopes; discrete all-pole modelling; discrete bispectra; harmonic bispectra; higher-order spectra; spectral envelope estimation capabilities; speech analysis; speech segments; Autocorrelation; Colored noise; Digital audio players; Frequency; Gaussian noise; Higher order statistics; Nonlinear equations; Predictive models; Speech analysis; Working environment noise;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1991. ICASSP-91., 1991 International Conference on
Conference_Location :
Toronto, Ont.
Print_ISBN :
0-7803-0003-3
DOI :
10.1109/ICASSP.1991.150207
