Journal of the Korean Institute of Telematics and Electronics (대한전자공학회논문지)
- Volume 25 Issue 4
- /
- Pages.430-436
- /
- 1988
- /
- 1016-135X(pISSN)
A Study on the Relation Between the LSF's and Spectral Distribution of Speech Signals
Line Spectral Frequency와 음성신호의 주파수 분포에 관한 연구
Abstract
LSF(Line Spectral Frequency) derived from LPC has known as a very useful transmission parameter of speech signals, for it has a good linear interpolation characteristics and a low spectrum distortion at low bit rates coding. This paper presents that it is possible to extract directly the formant frequencies of speech signals from LSF parameter without application of FFT algorithm by comparing the distribution of LSF parameter with the frequency distribution of analysis filter. This paper suggests the advanced algorithm that results in improving the speed of convergence at analytic solution method. Also, for the flexibility of parameters, the process that transforms from LSF to LPC is presented.
Keywords