Cellular radiotelephone having answering machine/voice memo capability with parameter-based speech compression and decompression
US6240299A · kind A · utility
8Cited by
12References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 20, 1998 |
| Grant date | May 29, 2001 |
| Priority date | — |
| Expiry date | Feb 20, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W4/12
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A method for speech encoding and decoding usable in a Digital Telephone Answering Machine/Voice Memo for a cellular radiotelephone is provided. The apparatus uses parameter-based speech compression and decompression modules. These modules perform decimation of standard-type speech parameter frames before storing the message, and interpolation before playing the message, in order to substantially reduce the number of parameter bits in parameter frames of the stored speech signal. The result is a decreased demand for storage space and increased speed of speech compression and decompression.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.