On 6/14/2013 9:55 PM, GARY HUBER wrote:
If the
715 is set correctly and its output gain is near or less than that of
the microphone only, then the OMNI's DSP processor should not be
overdriven.
Yes... but the energy is different. Once you
smooth it out, I am not sure you can smooth
it again.
Here is my theory:
A compressor sorta folds energy from outside
the operating frequency spectrum into the
useable spectrum. (An admittedly inaccurate
description, but I am not working on my thesis...) ;-)
The net result is that the average amplitude of
the signal and hence average transmitted power
ends up stronger than it would be had compression
not been used.
My guess is that you cannot "average" it twice.
Once it is averaged, I figure you cannot do it again.
It is analogous to running the "normalize" feature
in an computer audio processor application, which
is the application of a constant amount of gain to
an audio recording to bring the average or peak
amplitude to a target level (the norm). Because the
same amount of gain is applied across the given range,
the signal-to-noise ratio and relative dynamics
are generally unchanged. Normalization differs
from dynamic range compression, which applies
varying levels of gain over a recording to fit
the level within a minimum and maximum range.
Now I figure once you have normalized it, you
cannot really normalize it again. Similarly,
once you compress it, you cannot really compress
it again - like, ...er... um... ah... if you
get a hair cut, then you cannot get another cut
that same day without ending up with pretty short
hair... once you cut it to a new length, you cannot
cut it again to that same length, and similarly you
cannot compress the signal twice - once you cut
the rough edges, it is smoothed out (averaged)
already. (Sheesh... I wish I could think of a
better analogy... but I hope you get my drift...)
Parenthetically, those Omni VII settings sound
just about right.
=================== K8JHR ====================
'.
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