[iyonix-support] Re: Voice recording
- From: Dave Higton <davehigton@xxxxxxxxxxxxx>
- To: iyonix-support@xxxxxxxxxxxxx
- Date: Mon, 18 Jun 2007 21:13:43 +0100
In message <2454270.1844175-tennant@xxxxxxxxxxxxxxxxx>
tennant@xxxxxxxxxxxxxxxxx (Tennant Stuart) wrote:
> Richard/Charles/Dave wrote:
>
> > Dynamic Mics shouldn't need external power but they do have fairly low
> > level output. An electret, with internal battery, should work.
>
> What's an electret?
What he means is an electret capacitor microphone. All this means
in practice is that it contains a small amplifier (often just one
transistor), but this needs to be powered in order to work. There
are two methods: one is that the microphone has a battery inside,
the other is that the equipment that the microphone is plugged in
to provides the power down the audio cable (the Iyonix /does/ /not/
do this). So you only have any chance if you have a microphone
that has a battery.
I find myself disagreeing with the statement "An electret, with
internal battery, should work" because it is still unlikely to
provide enough signal level. The mic input of the Iyonix has
only 20 dB more gain than the line inputs (translation: not
enough). So it would work, but the results would still be too
quiet to be satisfactory.
Dave
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