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Subject: RE: Use built-in MIC for auto-volume

RE: Use built-in MIC for auto-volume

From: John Wood <>
Date: Fri, 6 Sep 2002 12:51:49 -0400

Or worse still, what if you get a feedback loop going.

The volume of the headphones rise. This causes more pickup on the mic. So
it raises the volume more. Causing more pickup. Causing another rise in

That could hurt. :)

-----Original Message-----
From: Matthias Wächter []
Sent: Friday, September 06, 2002 12:42 PM
Subject: Re: Use built-in MIC for auto-volume

On Fri, 6 Sep 2002, Guy Devos wrote:

> When I was standing in the railroad station the other day, with my
> Archos jamming into my ears of course, I was wondering if it would be
> possible to use the built-in microphone to auto-adjust the volume level
> depending on the surrounding noise. It could increase the volume eg.
> when a train passes by. In playback, it just sits there doing nothing
> useful anyway. Can this be done? Is it worth considering?

How about _reducing_ the headphone's volume if the surrounding sound level
raises significantly? Imagine someone yelling at you "HEY YOU MAN, I'M
TALKING TO YOU, PUT DOWN YOUR PHONES!" and the only reaction is an
automatic music power rise for undisturbed Rockbox sound experience ...

Sehr Wus,
- Matthias

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Received on 2002-09-06

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