[Lab] "listening" to high volume using an electret microphone

[Peter Sjoberg]

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On 05/06/2014 12:45 PM, Richard Sloan wrote:
> pot on output will just limit the now clipped signal, need to adjust the
> gain of the amp itself, so the output never clips.....
I kind of wonder what the electret microphone can handle. Did see the
datasheet but don't know how to convert 85dB sound pressure (or whatever
you expect to get) to something on the datasheet but it must be a max
somewhere. If you hit that max it doesn't matter what you do at opamp
level, it's already clipped before it hits it.

/ps

> 
> On Tue, May 6, 2014 at 10:13 AM, Justin Slootsky <justin at slootsky.org
> <mailto:justin at slootsky.org>> wrote:
> 
>     Yes, at the 40db setting, it still drives too high.  Maybe I should
>     just put a pot on the output and see how that goes.
> 
>     ------------------------------------------------------------------------
> 
>         *From: *"greg atcheson" <greg.atcheson at gmail.com
>         <mailto:greg.atcheson at gmail.com>>
>         *To: *"Justin Slootsky" <justin at slootsky.org
>         <mailto:justin at slootsky.org>>
>         *Cc: *"lab" <lab at artengine.ca <mailto:lab at artengine.ca>>
>         *Sent: *Tuesday, May 6, 2014 9:46:27 AM
>         *Subject: *Re: [Lab] "listening" to high volume using an
>         electret microphone
> 
> 
>         Have you tried using the other lower-gain setting jumpers
>         mentioned in the link? If it was a standard opamp I'd say put a
>         potentiometer in for the gain and you can adjust it.
> 
>         On May 6, 2014 8:10 AM, "Justin" <justin at slootsky.org
>         <mailto:justin at slootsky.org>> wrote:
> 
>             I'm working on a "light organ" type project, and I tried
>             this http://adafru.it/1713 and it worked great until I got
>             to high home stereo volume, then everything was maxed out.
>              Since my target environment is an indoor concert venue, I
>             need to use something with less amplification.
>             I have a bare electret microphone, but I'm having trouble
>             finding information on how to use it in a high volume
>             environment.
>             Does anyone have any links or suggestions?
> 
> 
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> 
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> 
> 
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