| 摘要 |
<p>A TECHNIQUE FOR SYNCHRONOUS NEAR-INSTANTANEOUS CODING The present invention relates to a near instantaneous companding coder wherein the peak a-c amplitude of an input signal is measured over a block of K samples. Each of the K samples is coded into an n-bit quantized sample code word based on a step size quantizing control signal determined from the measured peak a-c amplitude. The step size quantizing control signal, and other overhead information such as parity, sync, etc., are formed into a K-bit overhead word and transmitted serially by adding a separate bit of K-bit overhead word to each of the corresponding K n-bit quantized sample code words associated with an immediately prior block of K sample code words. At the remote decoder, the received K-bit overhead information word is stored and used to decode the next subsequent block of K received n-bit quantized sample code words.</p> |
