Representation of fine structure of speech signals using time-frequency zeros

被引:0
|
作者
Okada, A [1 ]
Ono, N [1 ]
Ando, S [1 ]
机构
[1] Univ Tokyo, Bunkyo Ku, Tokyo 1138656, Japan
关键词
zeros; filter bank; subband signal; speech signal; interference;
D O I
暂无
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
In this paper, we propose a novel time-frequency analysis method for speech, which consists of 1) subband decomposition by the holomorphic filterbank proposed by us, and 2) detection of time-frequency zeros. By theoretical analysis and experiments, we show that 1) voiced speech generates a stable two-dimensional (2-D) maps of zeros which are different vowels by vowels, 2) it represents pitch structure, formant structure, and glottal excitation instance, which are important for analyzing voiced speech in frequency and time domain.
引用
收藏
页码:2357 / 2360
页数:4
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