Abstract
We describe the implementation of a programmable general-purpose acoustical front-end for speech recognition; its design keeps into account, as an example, the algorithm of centisecond cepstrum extraction for an acoustical signal sampled at a maximum rate of 12.8 kHz.
It consists of three boards, a master board controlled by a general purpose microprocessor, a slave board containing two digital signal processors working in parallel and an input/output analog board.
The overall system is connected to a general-purpose minicomputer, which constitutes the system host. The implementation details and its rationale (mainly reprogrammability and performance) are outlined. In cases of more demanding applications, the system could also be hardware reconfigured with cascade or parallel sections.
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Cavazza, M., Ciaramella, A., Pacificl, R. (1985). Implementation of an Acoustical Front-End for Speech Recognition. In: De Mori, R., Suen, C.Y. (eds) New Systems and Architectures for Automatic Speech Recognition and Synthesis. NATO ASI Series, vol 16. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-82447-0_6
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DOI: https://doi.org/10.1007/978-3-642-82447-0_6
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