ncarver;583821 Wrote: 
> I think you are proposing using the Touch's digital volume control to
> equalize outputs, but I would prefer to avoid that since this is
> supposed to be for a test of sound quality so I really don't want the
> Touch modifying the source.  However, this gives me an idea: since
> sound quality doesn't matter for the calibration, I can avoid high
> level noise from the speakers while still using a suitably high preamp
> volume setting by simply turning the Touch volume down quite low for
> the calibration.  Assuming the Touch analog and digital out volumes
> track each other precisely, I could calibrate with noise at like 20 but
> then listen to music at 100, with the same preamp volume settings.  That
> should work great to avoid cat distress.  Thanks!  (If this is what you
> actually meant, then sorry I did not understand it as such.)

The Touch's digital volume control will not be a quality issue at the
moderate levels of attenuation I was suggestion.  However I have an
even better solution.  Change the output volume of the noise test
file.

Use something like Audacity (http://audacity.sourceforge.net/) to make
the test noise file to a volume db level that more approximately
matches your music selection.

I made a bunch of test noise files and put them on my server here:  15
seconds of pink noise at various levels.

http://ben.nerp.net/noise/


-- 
SuperQ
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