Abstract:We provide a new derivation of the log likelihood spectral distance measure for signal processing using the logarithm of the ratio of entropy rate powers. Using this interpretation, we show that the log likelihood ratio is equivalent to the difference of two differential entropies, and further that it can be written as the difference of two mutual informations. These latter two expressions allow the analysis of signals via the log likelihood ratio to be extended beyond spectral matching to the study of their statistical quantities of differential entropy and mutual information. Examples from speech coding are presented to illustrate the utility of these new results. These new expressions allow the log likelihood ratio to be of interest in applications beyond those of just spectral matching for speech.
A cochlear implant (CI) is an el that restores partial hearing to a is profoundly deaf or severely hard of h current work, the TMS320C6713 DS implement a lab model of the cochlear im uniform band channel vocoder model. Th real-time speech input and the output excite point electrodes. As the implantatio in the inner ear is a surgical procedure, v functioning of the CI model is done simulation results. Acoustic CI simulatio implants are performed using a cepstral with Mel-frequency cepstral coeffici performance of each model depends on quality of the synthesized speech, th models were used to conduct a listen normal hearing subjects for words f database. The average grade for the channel vocoder model is found to be 3. average grade of 3.1 on a scale of 5 f vocoder model. TENCON 2011
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