[LAU] timemachine bug

Kim Cascone kim at anechoicmedia.com
Sat Jan 22 02:25:48 UTC 2011


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


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?



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