[PD] RPI 3 USB audio performance?

katja katjavetter at gmail.com
Tue Oct 10 17:49:46 CEST 2017

What I found is, small USB audio dongles don't process low frequencies
well because they use too small capacitors. This can be improved by
DIY soldering. Also some of them do a bad job in noise shaping,
leaving quantization noise in audible range. That is something you
can't improve. Here is a page describing some of my findings:


Good old Griffin iMic is better than the dongles I tried. But it is
nice to hack a dongle and make it a tiny bit better. Maybe it's time
to design our own audio dongle.


On Tue, Oct 10, 2017 at 3:41 PM, Dan Wilcox <danomatika at gmail.com> wrote:
> For those of you using RPI 3s with Pd, how is the audio performance using a
> standard stereo USB audio interface?
> I'm talking simple, USB 1.1 full duplex at 16 bit, nothing fancy. No special
> RPI-only backpack boards or GPIO audio debs, just regular usb audio devices.
> --------
> Dan Wilcox
> @danomatika
> danomatika.com
> robotcowboy.com
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