A new configuration for speech digitization at 9600 bits per second

A speech coding algorithm for digital transmission of speech at a rate of 9600 bits per second which can be implemented on a speech processing system is described. The algorithm combines the following: a pitch extraction loop, a pitch compensating adaptive quantizer, a sequentially adaptive linear predictor, an adaptive source coding, and a multipath tree searching to generate very high quality speech output. Although each of these elements has been previously applied to speech coding, the combination of all five of these elements has not been discussed before. Preliminary simulation studies of the algorithm have yielded a signal-to-noise ratio which is indicative of very high quality speech.