Method for frequency-band compressed speech transmission

摘要

The present invention relates to a method for frequency-band compressed speech transmission using a vocoder, in which the speech band is divided at the transmitting end into a larger number of sub-bands sampled at a low frequency and a spectral value ai is determined in coded form for transmission to the receiving end for each sampling cycle and for each sub-band. It is proposed to standardise the spectral values of each sampling period, apart from the maximum spectral value Max (ai), to this maximum spectral value and to transmit the spectral values ai standardised in this way along with the maximum spectral value, including its channel number (locus), in one block. <IMAGE>