인간의 청각시스팀에 기반한 음성전처리기의 설계점에 대하여

On the Design Considerations of Auditory Preprocessors Based on Human Auditory System

저자
길이만, 이영직 / Research Department
권호
8권 2호 (통권 28)
논문구분
일반 논문
페이지
69-0
발행일자
1993.06.15
DOI
10.22648/ETRI.1993.J.080207
초록
In the conventional speech processing, the technique of FFT(Fast Fourier Transform) is usually applied to the finite number of samples within the window of specified length using the fixed sampling rate. In this case, the temporal resolution is dependent upon the length of window while the spectral resolution is dependent upon the number of samples within the window. Thus, once the temporal resolution is determined the spectral resolution is also determined or vice versa. To resolve this type of dilemma, a new type of bank-filter similar to the characteristics of cochlear model needs to be considered. Furthermore, wide dynamic range of cochlea certainly helps the stable extraction of speech features. In the paper, the human auditory system will be briefly introduced and previous works on auditory preprocessors based on cochlear model will be reviewed. As a conclusion, the design considerations of auditory preprocessors based on cochlear model will be addressed.
   467 Downloaded 376 Viewed
PDF
목록
Sign Up