Abstract
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: o 400 bps vector quantized LPC o 800 bps vector quantized LPC o 2800 bps scalar quantized LPC o 10500 bps residual excited LPC o 32000 bps ADPCM 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.
| Original language | American English |
|---|---|
| Pages | 2033-2036 |
| Number of pages | 4 |
| State | Published - 1987 |
| Externally published | Yes |
| Event | 1987 European Conference on Speech Technology, ECST 1987 - Edinburgh, United Kingdom Duration: Sep 1 1987 → Sep 4 1987 |
Conference
| Conference | 1987 European Conference on Speech Technology, ECST 1987 |
|---|---|
| Country/Territory | United Kingdom |
| City | Edinburgh |
| Period | 9/1/87 → 9/4/87 |
ASJC Scopus subject areas
- Language and Linguistics
- Computer Vision and Pattern Recognition
- Human-Computer Interaction
- Software
- Linguistics and Language