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.
申请公布号 ZA8000081(B) 申请公布日期 1981.09.30
申请号 ZA19800000081 申请日期 1980.01.07
申请人 THE PLESSEY CO LTD 发明人 DAVIES J;HATHERILL R
分类号 H04M3/56;H04Q1/457 主分类号 H04M3/56
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