On Sat, 22 Jan 2011 08:37:04 +0000 Peter Nelson <peter@xxxxxxxxxx> wrote: > On Fri, 2011-01-21 at 18:25 -0800, Kim Cascone wrote: > > when I connect the output of Audacity to Timemachine _by hand_ using > > Patchage > > there is a delay in the stereo sound file between the start of audio in > > ch1 & 2 > > which is equal to the time at which the connections are physically made > > to timemachine > > > > in other words: > > - I create a 10 sec file of 440Hz sine in Audacity > > - play it back on loop > > - go to Patchage and connect ch1 from PortAudio (which is actually > > Audacity) to Timemachine wait 10 seconds then connect ch2 to the other > > input of Timemachine > > - hit record on Timemachine wait a couple of seconds > > - stop record on Timemachine > > - stop playback of 440 sine in Audacity > > - open the sound file recorded by Timemachine in Audacity > > - look at the start of the sound file > > - there is a delay between channels seen in the sound file equal to the > > time I waited to connect ch1 & ch2 > > Maybe you could try with a JACK-native audio player. See below... > > > side question: why do the outputs of Audacity appear as PortAudio in Jack? > > is it a reference to virtual ports being instantiated when playback > > occurs in Audacity? > > No, it's because Audacity does not support JACK. It only half-manages it > through using the PortAudio library. > > Peter. ... and the devs seem highly resistant to the idea of writing in full jack support - they've certainly been asked often enough. Maybe it's due to cross-platform implications. -- Will J Godfrey http://www.musically.me.uk Say you have a poem and I have a tune. Exchange them and we can both have a poem, a tune, and a song. _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
