| 发明名称 |
Compression and expansion of digitized voice signals |
| 摘要 |
Speech signal data compression is improved by a first compression using Time Domain Harmonic Scaling (TDHS), wherein two periods of voiced data are averaged together, followed by a second compression using Continuously Variable Slope Delta Modulation (CVSD). Pitch period detection and sampling-rate conversion are also features of the invention.
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| 申请公布号 |
US4631746(A) |
申请公布日期 |
1986.12.23 |
| 申请号 |
US19830466250 |
申请日期 |
1983.02.14 |
| 申请人 |
WANG LABORATORIES, INC. |
发明人 |
BERGERON, LAWRENCE E.;DALY, DANIEL F.;GROSSO, ELAINE C. |
| 分类号 |
H04B14/04;G10L21/04;H04B1/66;(IPC1-7):G10L5/00 |
主分类号 |
H04B14/04 |
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