| 发明名称 |
Telephone summing circuit |
| 摘要 |
The addition of two digitized audio signals, each of which has been non-linearly compressed and PCM encoded, is accomplished by converting only one of the signal samples (preferably the smaller) to an exponential-format value which may be linearly added to the other.
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| 申请公布号 |
US4230908(A) |
申请公布日期 |
1980.10.28 |
| 申请号 |
US19790005307 |
申请日期 |
1979.01.22 |
| 申请人 |
PLESSEY CANADA LIMITED |
发明人 |
DAVIS, JOHN CHRISTOPHER H.;HATHERILL, RICHARD A. |
| 分类号 |
H04M3/56;H04Q1/457;(IPC1-7):G06F7/50 |
主分类号 |
H04M3/56 |
| 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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