Bug? Clicks while recording audio (In) from MIDI (out)
Bug? Clicks while recording audio (In) from MIDI (out)
- Subject: Bug? Clicks while recording audio (In) from MIDI (out)
- From: Josh Whitver <email@hidden>
- Date: Tue, 11 Feb 2003 10:55:32 -0600
This may sound a bit convoluted, but what I'm trying to do is really pretty
simple. I have a MIDI file of a Piano Concerto that I'm writing that I'm
trying to convert to a decent-sounding MP3 to post on my website.
I play the MIDI file out to my synth (Using QMidi since QuickTime won't play
out to external hardware...still!), and running the audio out from my synth
back into the computer, recording the audio input with "Audio In", a
freeware app.
This works, except for one thing. Every time there's a MIDI note event, I
get a strange click in the audio that's coming in. It's not from the synth,
because the speakers on the synth don't register it. If I plug headphones
into the keyboard (killing the internal speakers) and just monitor the sound
on my computer speakers, there's the click, even if I turn the volume on the
synth all the way down. It's like there's a chorus of tiny fingernails
clicking away the rhythms of every part. I've put a short sample of this
at:
http://www.whitver.net/coreaudiobug.mp3
Part way through this sample, I turned the volume on the synth all the way
down, yet the clicks remain. They've gotta be coming from CoreAudio.
Further proof of this comes from the fact that if I boot into Mac OS 9, the
clicks are gone. I'm on a Gigabit G4/400, synth is a Yamaha PSR-520 hooked
up via USB FastLane MIDI interface.
Sorry if this is the wrong place to be discussing this, but I thought you
folks would either want to know or be able to tell me if I'm doing something
wrong. Thanks for your time!
--
Josh Whitver
email@hidden / email@hidden
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