Hi all, I'm to hit about aprox the same encoding settings (ie bitrate,filesize, quality) with talk radio shows that are currently encoded with Real Producer in 16kbit acelp (maybe cs-acelp). Currently 2 hours of talk radio encoded in a .rm container yields about 16.3 meg file. With speex in wideband vbr I'm getting very good quality results, but with a larger filesize of 19.1 meg. I'm currently using the command line below in a shell script, $1 is the time in seconds, and $2 is just the file name specified.: rawrec -d /dev/dsp -t $1 -s 16000 | speexenc -w --vbr --stereo - $2-$DATE.spx I'm looking for some recomendations on getting down near or below 16meg file size and maintaining the current 16k feed. Thanks, -Jason --- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/ To unsubscribe from this list, send a message to 'speex-dev-request@xiph.org' containing only the word 'unsubscribe' in the body. No subject is needed. Unsubscribe messages sent to the list will be ignored/filtered.
> rawrec -d /dev/dsp -t $1 -s 16000 | speexenc -w --vbr --stereo - $2-$DATE.spxtry the --nframes option of speexenc Set it to values like 2, 3, 4, etc and check the effect on the file size. --- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/ To unsubscribe from this list, send a message to 'speex-dev-request@xiph.org' containing only the word 'unsubscribe' in the body. No subject is needed. Unsubscribe messages sent to the list will be ignored/filtered.
> rawrec -d /dev/dsp -t $1 -s 16000 | speexenc -w --vbr --stereo - $2-$DATE.spx > > I'm looking for some recomendations on getting down near or below 16meg > file size and maintaining the current 16k feed.Well you just have to add a --quality N (N defaults to 8 in your case). Or you may want to try --abr 16000, which tries to adjust VBR quality in real-time to get 16 kbps. Last thing, are you sure you want to encode in stereo. Most of the time for speech it doesn't add much. Jean-Marc -- Jean-Marc Valin, M.Sc.A. LABORIUS (http://www.gel.usherb.ca/laborius) Université de Sherbrooke, Québec, Canada <p> -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 190 bytes Desc: Ceci est une partie de message numériquement signée Url : http://lists.xiph.org/pipermail/speex-dev/attachments/20030606/faf7665e/signature-0001.pgp