Dear Manoj, all, > Hi, > I have to encode 16bit single channel audio sampled at 8Khz. The bitrate > of the encoded file has to be in the range of 8-16kbps. I recently read that > twinVQ is better than mp3 at lowbitrates. > 1. Is the improvement in quality really substantial at 8-16kbps?
TwinVQ is recommended by MPEG for bitrates of 6 Kbits/s where it showed performance of 8 Kbits/s MP3 - for higher bitrates TwinVQ might be worse (and it is, usually) than MP3. > 2. Is it easy to find source code for the encoder, direct show filters for > decoding? How about error resilience of the bitstream? Is there a well > defined standard for the bitstream? > TwinVQ is part of the ISO 14496 (MPEG-4) standard, and therefore it is covered by the ISO specs. You might obtain them from your local standard-setting office. Source code is publically available as ISO MPEG-4 reference code (14496-5) but this software is very low quality. Optimized implementation could be acquired from NTT for a price of $15,000 if I remember correctly. Error resilence is handled by ER tools in MPEG-4, and the standard itself is very well defined. Best Regards, Ivan Dimkovic [EMAIL PROTECTED] _______________________________________________ mp3encoder mailing list [EMAIL PROTECTED] http://minnie.tuhs.org/mailman/listinfo/mp3encoder
