The Logic Off Topic list

Mu is a term for a type of gain in a tube amp stage.
Basically, since most tube amps (in audio) have been class-A (at least until
the power stage), it controls the slew rate of one polarity - the other one
being fixed by the resistor in the circuit.  What does that mean for the
average bear?  Level of second harmonic distortion (as balanced against
third).

> From: GAmoore@...
> Reply-To: logic-ot@yahoogroups.com
> Date: Mon, 26 Nov 2001 12:21:31 EST
> To: logic-ot@yahoogroups.com
> Subject: Re:  [L-OT] Variable Mu COmpressor - explanation anyone?
> 
> I don't have a clue, but the Apogee Rosetta has a 'soft limit' which I
> believe converts the linear signal to a log signal above a threshhold.
> Mu, is often used for the mean or average by the way.
> 
>> What I know of it is that it acts as a normal compressor reducing the
>> output level above a given threshold by a given ration, but if the input
>> level should rise above another given threshold (call it Mu for
>> convenience, which is higher than the Threshold level...) then the input
>> will be passed through as an exponential in excess of the Mu level, ie. no
>> big discontinuity when the Mu level is reached.
>> 
>> Is this correct? Are there any other factors involved? Can anyone point me
>> to where I might find info online or elsewhere? I need to know this as I
>> am trying to write a Variable Mu VST compressor.
> 
> 
> 
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