| 摘要 |
<p>A circuit for demodulating digital voice signals to prevent generation of large voice distortion when the interpolation is effected continuously to correct error in case error has developed continuously. The demodulation circuit comprises a counting circuit (11) which detects from the outputs of an error correction circuit (2) how many samples are interpolated continuously, and two AND circuits (9), (10) which perform AND operation of the output of the circuit (11) and a mute signal that is generated when it is out of synchronism with the output. When the samples are to be interpolated continuously more than a given number m, a voice difference signal is muted by the mute signal so that no signal is produced that seriously deteriorates the sound quality.</p> |
