[PD] audio to arduino to PD, back to audio

[Peter Brinkmann]

Hi Onyx,
If low-fi ness and texture is what you're after, then you may want to
try bit-banging, i.e., sampling audio with digital pins, for a
resolution of one bit per sample.  That sounds crazy, but with a
little bit of low-pass filtering the output is surprisingly
recognizable.  It also improves your odds of staying within the
limitations of the hardware.

I built some audio toys around Arduino a few years ago and bit-banging
worked quite well for what I had in mind.  I would share the code, but
I believe I deleted it.
Cheers,
     Peter

On Mon, Nov 28, 2011 at 7:10 PM, Onyx Ashanti <onyxashanti at gmail.com> wrote:
>
>
>
> An analog input on an Arduino is a poor Analog-to-Digital Convertor compared
> to audio ADCs.  Its 10-bit, and not more than 16kHz max (more like 4kHz)
> sampling rate.  Standard digital audio is 16-bit/44.1kHz.
>
> Then, having your Arduino read at 4kHz will require all of the CPU time, so
> it can't really do much else then.
>
> .hc
>
> thank you for getting back
> to me.
>
> How would it work though?  I am curious about the low fi ness and the
> texture it could bring to vocoding. I also would like to use voice
> modulations for synth sounds so high quality is not necessary. 4khz might be
> fine for the intended purpose; something better than r2d2 but not quite bad
> telephone connection. in between. all I need the arduino to do is sample the
> audio and send the data to pure data where I can deal with it there.  on the
> arduino, I just want the signal with no processing of any kind. possible?
>
>
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