[codec] Summary of last two weeks
"Christian Hoene" <hoene@uni-tuebingen.de> Mon, 24 May 2010 14:42 UTC
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From: Christian Hoene <hoene@uni-tuebingen.de>
To: codec@ietf.org
Date: Mon, 24 May 2010 16:42:24 +0200
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Subject: [codec] Summary of last two weeks
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Hi all, my personal summary of the last two weeks emails. - Wireless IP is in, Bluetooth is out. Consensus. - The need for a low complexity mode was stated (e.g. 10-20 MIPS), which must not support all audio qualities. No clear consensus on this issue yet... - Which is the complexity of the low complexity mode? - How to measure the complexity? - Delay threshold for telephony is somewhere in between 150-250 one way. Consensus. - 5ms frames should be supported because of different reasons. Consensus. - There is no consensus why. Arguments were given distributed ensemble performances, sidetone, high-density gateways and hardware phones. Consensus that we do not need to understand all those arguments and scenarios. - Upper limit frame size limit shall be between 100-250ms. If required, larger packets can be generated by putting multiple frames in one packet. - Supporting Layered coding? No consensus yet. - VAD, CNG, DTX? And how to efficiently combine pre-encoded audio? The discussion is still not finished... With best regards, Christian --------------------------------------------------------------- Dr.-Ing. Christian Hoene Interactive Communication Systems (ICS), University of Tübingen Sand 13, 72076 Tübingen, Germany, Phone +49 7071 2970532 http://www.net.uni-tuebingen.de/
- [codec] Summary of last two weeks Christian Hoene
- Re: [codec] Summary of last two weeks Kevin P. Fleming
- Re: [codec] Summary of last two weeks Christian Hoene