| 发明名称 |
Method of noise reduction for an ADPCM signal |
| 摘要 |
Noise in an ADPCM signal is muted or suppressed by modifying the magnitude of the ADPCM information during noisy conditions. In one method, the ADPCM data is changed to a predetermined magnitude value. In another method, the magnitude is reduced by a predetermined amount.
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| 申请公布号 |
US5687189(A) |
申请公布日期 |
1997.11.11 |
| 申请号 |
US19940308185 |
申请日期 |
1994.09.19 |
| 申请人 |
MOTOROLA, INC. |
发明人 |
SMITH, SYBREN D.;MARKO, PAUL D.;WADIN, CRAIG P. |
| 分类号 |
H04B14/06;H04L1/00;(IPC1-7):H04B14/06 |
主分类号 |
H04B14/06 |
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