Would it be the case that Ardour etc are thinking this is a mono file? A stereo file played as mono could sound half-speed (maybe somewhat distorted, depending on the differences betweeen the channels).
Victor ----- Original Message ----- From: "Raymond Martin" <[email protected]> To: <[email protected]> Sent: Monday, October 05, 2009 7:23 PM Subject: [LAD] Half speed audio playback issue > Hi all, > > Just wondering if any of you can give me a few clues as to what the > possible > culprits might be in the case of half speed (one octave down) audio > playback. > > I have recorded live audio into Audacity (stereo @48Khz) and exported it > out > to a sound file (Ogg, MP3). It plays fine in Amarok, but at half speed in > both > Ardour and Qtractor. Audacity is going straight to ALSA, Amarok through > Xine > to ALSA. > > Looks like some kind of problem with Jack, which is very possible, but I > had > no problem with using fluidsynth through Rosegarden (I could not load an > audio file into it to test though?). I tried to play straight into > guitarix, > rakarrak, etc. previously and ended up with really bad distorted sound, > that > also sort of sounded like sampling/processing was not up to speed. I tried > with an rt kernel, but no difference (flaky audio hardware is possible). > > Anyway, if you have experienced this before just let me know what you > think > it is. Need to dig in further myself, but a few clues from more > experiences > Linux "audionaughts" will probably help narrow it down faster. > > Any input appreciated. > > Thanks. > > Raymond Martin > > _______________________________________________ > Linux-audio-dev mailing list > [email protected] > http://lists.linuxaudio.org/mailman/listinfo/linux-audio-dev _______________________________________________ Linux-audio-dev mailing list [email protected] http://lists.linuxaudio.org/mailman/listinfo/linux-audio-dev
