Title :
Speaker normalization with the band-pass transform
Author :
Dognin, Pierre L. ; El-Jaroudi, Amro
Author_Institution :
Dept. of Electr. Eng., Pittsburgh Univ., PA, USA
Abstract :
This paper presents a new spectral transformation for speaker normalization called the "band-pass transform" (BPT). From the framework of the bilinear transformation (BT), the BPT is a new frequency warping resulting from a mapping of a prototype band-pass (BP) filter into a general BP filter. The BPT offers two degrees of freedom enabling complex warpings of the frequency axis. Estimation of the BPT parameters is performed using the Nelder-Mead algorithm. Our experimental results include a study of the BPT performance. BPT performs better than other VTLN methods and offers a gain of 1.13% absolute on Hub-5 English Eva101 set.
Keywords :
band-pass filters; speaker recognition; spectral analysis; transforms; Hub-5 English Eva101 set; Nelder-Mead algorithm; band-pass filter; band-pass transform; bilinear transformation; degrees of freedom; frequency warping; speaker normalization; spectral transformation; Automatic speech recognition; Band pass filters; Degradation; Displays; Frequency; Nonlinear distortion; Performance gain; Prototypes; Shape; Speech analysis;
Conference_Titel :
Signals, Systems and Computers, 2004. Conference Record of the Thirty-Seventh Asilomar Conference on
Print_ISBN :
0-7803-8104-1
DOI :
10.1109/ACSSC.2003.1292311
