search for: 100db

...ed I send the spectrogram (vic SoX) of the first 20 seconds > for the wav file and the opus file. Indeed, there is extra noise > for the low frequencies, but somewhere around -100 dB. > > Jan > That might be entirely due to SoX treating it as a 16-bit file, which it is not; -100dB is almost exactly the limitation of 16-bit. All Opus files are infinite-precision, and they'll encode the input at whatever precision is fed to them, but they do have a silence-detection mechanism which defaults to 16-bit in opusenc. SoX is either reading that value and erroneously assuming tha...

...of the first 20 seconds >> for the wav file and the opus file. Indeed, there is extra noise >> for the low frequencies, but somewhere around -100 dB. >> >> Jan >> > > That might be entirely due to SoX treating it as a 16-bit file, which it is > not; -100dB is almost exactly the limitation of 16-bit. All Opus files are > infinite-precision, and they'll encode the input at whatever precision is > fed to them, but they do have a silence-detection mechanism which defaults > to 16-bit in opusenc. SoX is either reading that value and erroneous...

Can anyone recommend a good library for performing audio downsampling? I intend to start playing around with "libresample" (http://ccrma-www.stanford.edu/~jos/resample/README-libresample-0.1.3.txt), as well as taking a look at "Secret Rabbit Code" (http://www.mega-nerd.com/SRC/), but I'd love some opinions before I get too involved with either. Free would be best, but

? Do you have any references for me to investigate, I am trying to understand how noise is reduced by introducing higher sampling rates. (I tried to search, but maybe it is so obvious that nobody even explains it) This is not very obvious. It requires you to understand basic signal processing theory. I will give some pointers below. Any physical signal (e.g. audio coming out of speaker, current

On Nov 05 11:32:49, hans at stare.cz wrote: > On Nov 05 11:05:34, hans at stare.cz wrote: > > > Did you also try to listen at the beginning, shortly before the real tone appears in the audible spectrum? While significantly larger, Opus had produced significant ghost noise (much less than Vorbis did)... I experience the "same" low level noise even in a wav file, even on

Hi, really stupid question here: 1) not bothered how possible it is 2) not bothered how legal it is 3) not bothered how much it costs question: how would i go about modifiying my stereo cd player (whatever model) to be able to play vorbis files on CD/CD-R/CD-RW ? <p>--- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/ To unsubscribe