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...They have plenty of time. It is possible to do the necessary resync >*provided* the PLL doesn't drift around too much when it is not being >driven by a proper source. Concern about that point might make them >avoid it completely. >> >> From: Guilherme Balena Versiani <guibv at comunip.com.br >> <mailto:guibv at comunip.com.br>> >> >> > Yeah, the ADC and DAC work at different rates. I really don't know >> why these >> > soundcards are designed this way, but I can tell you that this is very >> > common. In fact...

...echo > suppression scheme. Skype seems to do a reasonable job, though. It is difficulty to measure the accurate difference between two sampling rate by a software in a short time. So I don't believe Skype do some kind of resynchronise or re-sampling work. From: Guilherme Balena Versiani <guibv at comunip.com.br> > Yeah, the ADC and DAC work at different rates. I really don't know why these > soundcards are designed this way, but I can tell you that this is very > common. In fact, I didn't ever find a soundcard with the same capture and > render rates. If it is very...

...s referring speaker input as having direct access into what has been played thru speaker. (ASIO Soundcard provides interface for that) So if I am remebering correctly, with data from Mic and Speaker in sync, speex AEC should do the job. Tim _____ From: Guilherme Balena Versiani [mailto:guibv at comunip.com.br] Sent: Tuesday, August 11, 2009 1:33 PM To: Tim Na Cc: 'Greger Burman'; speex-dev at xiph.org Subject: Re: [Speex-dev] AEC troubleshooting Hello Tim, Please explain exactly what you are meaning by "expose speaker input as other OS". Did you reference system l...

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