| 摘要 |
A CIRCUIT AND METHOD FOR DIGITALLY MEASURING SIGNAL LEVELS OF PCM ENCODED SIGNALS A digital circuit for the level measurement of PCM signals representing an analogue signal and encoded in accordance with a predetermined companding law comprising a selector circuit having position O-n for selecting integers between O - n; a sampling circuit for successively sampling the input PCM signal 2n times, n being determined by the selector circuit; a connector circuit for converting each of the samples to its normalized power representation and for computing the average power of the samples; and means for determining the signal level equivalent of said average power in a conventional representation of power levels. - i |
