Echo cancellation and audio codec in coreaudio
Echo cancellation and audio codec in coreaudio
- Subject: Echo cancellation and audio codec in coreaudio
- From: aruna nagaraj <email@hidden>
- Date: Fri, 31 Jul 2009 14:54:40 +0530
I a newbie to MAC and working on a video client applicaiton. Please
help with the below questions:
1) Is it advisible to use sequencegrabber, QTkit or coreaudio
framework to capture voice data from microphone . Which of the above
API's is better for a video conferencing client ? My understanding is
that QTkit is better to attain lip synchronisation when the audio and
video capture source is from the same component .
2) Is there any echo cancellation API that coreaudio/ Quicktime
provides that can be used for echo cancellation . I have searched the
Apple documentation and have found none so far .
3) How do I use external audio codecs with Quicktime or coreaudio
frameworks ? Is it through new component creation for the codecs ? Or
can I in any way derive the Audiocodec component to include new audio
codec? Please provide links to some sample code .
Thanks,
Aruna
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