[LAU] Searching for audio interface with software-controlled mic gain

laulau till at www.n0ne.de
Fri Sep 4 09:57:52 UTC 2015

i think the idea of modding a regular soundcard to have remote
controllable gain potentiometers is less "Heath-Robinson" than one might

get some digital potentiometer like this
to replace a soundcards gain pots and then hook it up (i.e. using this
https://www.sparkfun.com/products/12633) to a cheap USB OTG android
phone (i.e. ZTE Blade L3 - 80$) to provide wireless connectivity.

Am 04.09.15 um 11:17 schrieb Will Godfrey:
> On Fri, 4 Sep 2015 10:38:54 +0200
> Thomas Janu <thomas.janu at gmail.com> wrote:
>> Hi Lorenzo,
>> On Fri, Sep 4, 2015 at 10:00 AM, Lorenzo Sutton <lorenzofsutton at gmail.com>
>> wrote:
>>> Hi Thomas,
>>> Sorry to dig up this oldish discussion and if I missed some of the ideas..
>>> but it's actually quite interesting.
>> No problem - it's still not solved on our side, as the two solutions so far
>> were deemed too expensive for a test setup by my higher-ups.
> How about a Heath-Robinson solution?
> Hook up an Arduino-mini (or the like) to voltage or digitally controlled
> amplifiers and link it into the computer via USB. If that's not possible run an
> external RS232 serial line to it.

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