Hi,sorry if I was unclear - I didn't mean to imply that there are no codecs that adjust their rate, I merely meant to say that the ones *we used* didn't.
On Sep 12, 2006, at 10:15, Ingemar Johansson S (LU/EAB) wrote:
Not totally updated on this issue but the AMR speech codec family can adjust the codec rate over arelatively large range. AMR-NB (0-4kHz audio spectum) has the bitrate range 4.75 to 12.2kbps AMR-WB (0-8kHz audio spectum) has the bitrate range 6.60 to 23.85kbps C-code is available at http://www.3gpp.org/ftp/Specs/html-info/26104.htm http://www.3gpp.org/ftp/Specs/html-info/26173.htm Payload format is described in RFC3267Also is available an audio codec (AMR-WB+) with bitrate range 5.2-48kbps athttp://www.3gpp.org/ftp/Specs/html-info/26304.htm Payload format is described in RFC4352
Lars -- Lars Eggert NEC Network Laboratories
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