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Does anyone here have any advice for working with PWM audio on the Arduino Uno? I'm trying to make an algorithmic synthesizer (a la http://countercomplex.blogspot.com/2011/10/some-deep-analysis-of-one-line-music.html) and have gotten past the ugly problems of on-the-fly string evaluation and getting sound to come out of the dang thing. I'm having two main problems: —What values should I be throwing this thing? The details of the ugly register construction is well beyond my experience level. Pages like http://arduino.cc/playground/Code/PCMAudio seem to suggest it's an unsigned byte, but I only get low rumbly squelches unless I shift my values left a few times. —Is there any reason the speed would be wobbling from its supposed 8000hz clock? I don't know enough to tell if this is a consequence of the affordable hardware or my laughably bad attempts at memory management. I will pastebin code if necessary, but I imagine these questions can be answered more generally. Thanks!
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Nov 28, 2012 05:59
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| # ¿ May 7, 2024 07:24 |
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