Alesis micron Reference Manual

 

 
Keytrk (Key tracking) 
Set whether the filter frequency rises and falls to match the keys 
you play or stays constant regardless of the keys you play.  A 
setting of 0 means the filter frequency will remain constant across 
the keyboard. If the key track parameter is set to +100, the filter 
tracks the keyboard perfectly, and with enough resonance, can be 
played as if it were an oscillator. Negative settings mean the filter 
will grow darker as higher notes are played. 
 
EnvAmt (Envelope Amount) 
Set the degree to which the filter frequency will be affected by the 
filter envelope. A negative setting inverts the envelope. 
 
Additionally, filter 2 has the following parameter: 
 
Offset 
Absolute  
The value assigned for filter 2’s frequency setting is applied 
normally. 
 
Offset  
The value assigned for filter 2’s frequency is locked into a relative 
position with filter 1’s frequency.  Filter 2’s frequency 
automatically rises and falls in step with filter 1’s frequency.  
 

Set the mix levels and left-right pan positions for filter 1, filter 2, 
and the pre-filter mix.   
 
Also set the following parameters: 
 
Preflt Src (Pre-Filter Source) 
The outputs of the oscillators, as well as a few other signal sources, 
are fed into a virtual mixing board called the Pre Filter Mix. The 
job of this mixer is to funnel all of these sources into the inputs of 
the next sound processing stage—the filters. For each source, you 
can specify its level, which is how loud it should be, and its 
balance, which determines how much of it goes to Filter 1 and 
how much to Filter 2. 
 
 
Flt 1 Sign (Filter 1 Polarity) 
Choose positive polarity for normal summing of the filter 1 and filter 
2 signals.  Choose negative polarity to throw the two filters out of 
phase with one another, creating peaks and notches at various 
frequencies.