search for: 196khz

Displaying 3 results from an estimated 3 matches for "196khz".

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2010 Jun 10
1
Sound card problem in acoustic echo cancellation
...assigned the same sampling rate, why clock of ADC and DAC are not synchronised? 1. If it is a pure hardware sound card (no incoming SPDIF signal). Why not send ONE clock signal to ADC and DAC? 2. if it is a AC97 or HD sound card, clock frequencies of their hardware ADC and DAC are all fixed to 48/196KHz. Then why their are still not synchronised? > It seems like Skype's speakerphone works OK on these machines, so maybe > they do something tricky to measure the slip rate and resynchronise in > software. On the other hand, they might just fall back to a crude echo > suppression sche...
2010 Jul 20
1
Sound card problem in acoustic echo
...PDIF signal). >> Why not send ONE clock signal to ADC and DAC? >> >Because the ADC always runs from the same PLL source, presumably for >simplicity. >> >> 2. if it is a AC97 or HD sound card, clock frequencies of their hardware >> ADC and DAC are all fixed to 48/196KHz. Then why their are still not >> synchronised? >> >Not really. They are *approx* 48kHz or *approx* 192kHz. >> >> > It seems like Skype's speakerphone works OK on these machines, so maybe >> > they do something tricky to measure the slip rate and resynchron...
2011 Feb 08
2
Call Recording audio file quality query
Hi We're getting requests coming in for higher quality audio in our call recordings. We currently use MixMonitor and everything is being saved in it's native 8000Hz, 16 bit wav format. I have seen information on using Monitor and specifying a conversion to mp3 when the call ends and the 2 channels get mixed but surely the 2 channels are already saved as 16bit 8000Hz wav files so the