Excerpts from Folderol's message of 2011-01-22 11:38:37 +0100: > 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. Jack is available on Linux, Windows, OSX and Solaris as far as I know, that' pretty cross platform if you ask me. Anyway, I don't know whether this is a timemachine or audacity error. The error probably won't occur with an audio editor that doesn't require you to connect during playback. _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
