| 摘要 |
PROBLEM TO BE SOLVED: To provide a method that improves the speech quality of a telephone communication system, can easily be implemented, and minimizes signal delay. SOLUTION: The invention relates to the method for extending the spectral bandwidth of a bandwidth limited speech signal which comprises at least harmonics of a fundamental frequency, wherein a nonlinear function is applied to the bandwidth limited speech signal for generating the lower frequency components of the speech signal which are attenuated in the bandwidth limited speech signal. COPYRIGHT: (C)2007,JPO&INPIT
|
