European Conference on Speech Technology

Edinburgh, Scotland, UK
September 1987

Hardware Implementation of a Multi-Rate Real-Time Speech Codec

Bruce Bukiet, Roderick J. Ragland, John Damoulakis

N/A

This paper describes a multi-rate voice coder/decoder which is totally self contained and portable, requiring only an outlet to a standard North American 110 VAC power line. Virtually everything needed to perform speech coding experiments is contained within the instrument case. This system employs the INTEL 8751 micro-controller and two digital signal processors: the Texas Instrument TMS320 for data acquisition and the AT&T DSP32 for speech coding. The speech coding repertoire includes the following algorithms:

Both the hardware and software configurations are described, along with measured execution times and program and data memory usages. A review of the coding algorithms is presented, with a brief summary of the system's operational parameters.

Full Paper

Bibliographic reference.  Bukiet, Bruce / Ragland, Roderick J. / Damoulakis, John (1987): "Hardware implementation of a multi-rate real-time speech codec", In ECST-1987, 2033-2036.