Getting average power / peak power (sound monitoring)
Getting average power / peak power (sound monitoring)
- Subject: Getting average power / peak power (sound monitoring)
- From: Neil Clayton <email@hidden>
- Date: Mon, 19 Jun 2006 20:45:48 +0100
Hi all.
Does anyone know how to get a level (avg power, peak power) meter
reading from some kind of sound input device?
Ala - the Sound settings panel, in System Preferences (whizzy moving
level meter).
I've looked at CoreAudio - but there's loads of code, to setup
AUGraphs, mixers, AUnits etc etc etc. It seems completely overkill.
And it takes 4% CPU while running (which seems extreeme, just to
monitor a level). Quicktime is even less performant (15% CPU time,
while performing an SGPreview on the audio channel of a
SequenceGrabber).
Anyone know another way? or done this in the past?
---
Neil Clayton
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