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.
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Received on Sat Jan 22 12:15:02 2011
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