Showing papers on "Linear predictive coding published in 1972"

A survey of digital speech processing techniques

Abstract: Digital signal processing techniques are becoming increasingly important in speech analysis and synthesis. These techniques can be implemented using a general purpose computer facility (often not in real time), or special purpose hardware realizations can be constructed. This paper discusses some recent work in speech processing including design of digital filter bank spectrum analyzers, homorphic analyzers of speech, predictive coding, and hardware realization of a digital formant synthesizer. The survey concentrates on those speech processing techniques relevant to the development of sensory aids for the deaf.

Digital processing of the speech of deaf children

Abstract: Several digital processing techniques have been found to be of value in the computer analysis of the speech of deaf children. These techniques include the cepstrum analysis, chirp z transform, and predictive coding of the speech signal. The application of these techniques to the analysis of deaf speech, and the special problems that are encountered, are discussed. The accuracy of the speech parameter estimates obtained by these techniques is difficult to evaluate since the "true" values are not known. One approach to evaluating the accuracy of estimation is to synthesize the speech using the estimated parameter values. The computer simulation of the speech of deaf children has, thus far, shown a moderate degree of success. The computer synthesis of deaf speech also appears to be a diagnostic tool of great potential for the evaluation and treatment of speech problems.