I was simply using line~/play~ into a patch to read a buffer (some minutes long) at normal speed, when I heard that some strange kind of subtle distortion (with high partials) was produced after few seconds.
I made a test with a sine wave (440 Hz, 40 seconds) and found out that a process of growing distortion, with more and more partials appearing every some seconds, occurs during the playback.
(I've attached a snapshot of the sonogram)
I tested the same sine wave and sound files with sfplay~ and they played back fine. I also tried rebooting and using an old version of play~ from 2009, without any success.
How can I do to avoid this distortion with play~?
Am I missing something?
Thank you very much!
I am running Max Msp 5.1.4 on a 2007 2,33 Ghz MacBookPro, Hitachi 500Gb 7200rpm HD, with Osx Snow Leopard 10.6.4