1. Home
    Item seperator
  3. Item seperator
    A Model of LPC Excitation in Terms of Eigenvectors of the Autocorrelation Matrix of the Impulse Response of the LPC Filter

A Model of LPC Excitation in Terms of Eigenvectors of the Autocorrelation Matrix of the Impulse Response of the LPC Filter

New Image

SUMMARY: Linear predictive coding methods require efficient representation of both the LPC filter and its input excitation to synthesize high quality speech at low bit rates. Considerable progress has been made so far in encoding the filter parameters and it is possible to quantize these parameters with only 1600 bits/sec without introducing additional distortion by the quantization process in the synthetic speech signal. However, it is still not possible to encode the LPC filter excitation at low bit rates (less than 5 kbits/sec) and maintain high voice quality in the synthetic speech signal.