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Discussion Groups | Echo Cancellation | G.168(06/2002) testing problem
G.168(06/2002) testing problem - bojuchen2000 - Jul 14 3:02:00 2004
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G.168 defines many testing requirements for EC. I extract one of them as belows. ......the combined loss (L_Rin,act-L_RET) should be greater than or equal to that shown in Figure 10. G.168 also defines how to measure the signal level and peak in 6.4.1.2.1 and 6.4.1.2.2 respectively. While a engineer developes the algorithm of echo cancellation, I think there are following two steps. 1. software simulation 2. apply to target hardwae if the software simulation verification passes The level/peak measurement device according above two steps are very different. I wonder if any software/hardware measurement monitor out there? BJC |
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