ADPCM synthesizer without look-up table
US5524024A · kind A · utility
15Cited by
1References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 11, 1994 |
| Grant date | Jun 4, 1996 |
| Priority date | — |
| Expiry date | Jan 11, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B14/068
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The present invention provides a circuit for use in an ADPCM synthesizer for generating a function of a quantization step without the use of a look-up table. Illustratively, the function is represented in a piecewise linear fashion. This permits an ADPCM synthesizer to be implemented without the use of a memory storing a look-up table for the function so the area of the synthesizer chip can be reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.