search for: 19khz

I was doing some testing with RC2 and I noticed that RC2 doesn't encode past 19kHz with this clip (-b256 and -b350). There are no problems with this clip like it was before, but this clip contains signal past 19kHz which is audible as a faint high-frequency hiss - and that hiss is gone in the encoded file since RC2 cuts off at 19kHz. I think that -b256 and -b350 should encode at...

Don't know if anybody is still missing the lame oggenc features for resampling, lowpass/highpass filters etc, but I wrote a little script that uses sox to do all the stuff I need to real-time encode oggenc from the radio, or any input device. #!/bin/bash DATE=`date '+%m-%d-%Y-(%H.%M)'` DESTIN=/video/music/perftoday export DATE=$DATE'-PerformanceToday.ogg' sox -V -r 44100 -c

...otally lost (It's way more complicated than SOX) so now can anyone briefly describe what type of filter I should set up (FIR, IIR, all-pole), why one is better than the other, and if you have filter coefficient files lying around (lowpass, 19 or 20 kHz cuttoff) PLS forward them. I'd like a 19kHz 'brick wall' cuttoff with no ripple in the passband. : ) >From my undergrad engineering work I vaguely remember about 'too steep a cutoff gives you a lot of ripple in the passband', and other such design homilies about RC filters. What I'm looking for here are some similar...

thanks for getting back to me, i have uploaded a zip file containing some sound files that demonstrates the issue. http://www.bogus.net/~olav/ess.zip this contains s.mp3 original wav file (mono) converted to top-quality mp3 (370K) s.wma windows media encoder with 19khz voice compression ( 62K) s-2.spx speexenc --vbr --quality 2 on the wav file ( 63K) s-9.spx --quality 9 (197K) plus quality 3, 4, 5, 6, 7 and 8. the contents of the file is a norweigan sentence from a record containing a lot of ess sounds...

...e, > > i have uploaded a zip file containing some sound files that > demonstrates the issue. > > http://www.bogus.net/~olav/ess.zip > > this contains > > s.mp3 original wav file (mono) converted to top-quality mp3 (370K) > s.wma windows media encoder with 19khz voice compression ( 62K) > s-2.spx speexenc --vbr --quality 2 on the wav file ( 63K) > s-9.spx --quality 9 (197K) > > plus quality 3, 4, 5, 6, 7 and 8. > > the contents of the file is a norweigan sentence from a record...

are there plans to add "de-essing" as part of the speexenc procedure, to make it possible to use lower quality compression without getting those horrible computer-like "ess" sounds in the finished result? like if you say "someone said the sun is shining", there is a lot of ess sounds, and these will sound "computer-ish" at vbr qualities below 9. i know

Guys (and girls), I\'ve been testing Ogg Vorbis quality at home, and I thought I\'d share the results with you. For those who want the conclusion, Vorbis 1.0 RC3 sounds better than LAME 3.70 vbr/cbr (which I\'m told now that it\'s broken for VBR), at less bitrate, however, it\'s not perfect (and probably never will, since it\'s a lossy audio codec) and could use some