发明名称 |
Apparatus and method for maintaining a constant speech envelope using variable coefficient automatic gain control |
摘要 |
An apparatus and method for maintaining a constant speech envelope using automatic gain control, wherein the level of the audio signal is monitored. If increasing, a first level of gain increase is applied to the gain signal. If decreasing, a second level of gain decrease is applied to the gain signal, the second level being less than the first level. By applying a lower level of change to the gain signal when it is seen as decreasing, a more constant speech envelope is obtained during gaps and interstices in the analog signal that are common in speech.
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申请公布号 |
US6298139(B1) |
申请公布日期 |
2001.10.02 |
申请号 |
US19970002182 |
申请日期 |
1997.12.31 |
申请人 |
TRANSCRYPT INTERNATIONAL, INC. |
发明人 |
POULSEN STEVEN P.;PRESTON, II JAMES P. |
分类号 |
H03G1/00;H03G3/30;H03G7/06;(IPC1-7):H03G3/00 |
主分类号 |
H03G1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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