| 摘要 |
A CELP speech coder estimates the LPC coefficient values on a continuously adaptive basis, for example using the LMS algorithm. An LPC analysis circuit 4 which may be used in a conventional speech coder (fig.1 not shown) has samples of input speech signal applied to a processor 6 and a predictor 8. The input speech samples are subtractively combined at 10 to obtain a residual value which is also applied to the processor 6 and the processor outputs the LPC coefficients. |
