Difference between revisions of "Voltage Controlled Amplifier"

From MMM Wiki
Jump to: navigation, search
(New page: Audio In jack for inputting audio signals. Env In Jack for inputting the main gain control signal. Primarily, an Envelope Generator is patched into this jack, but other CVs can be used ...)
 
Line 1: Line 1:
Audio In jack for inputting audio signals.
+
[[Image:VCA.jpg]]
 +
 
 +
Audio In jack for injecting audio signals into the amplifier.
  
 
Env In Jack for inputting the main gain control signal. Primarily, an  
 
Env In Jack for inputting the main gain control signal. Primarily, an  
 
Envelope Generator is patched into this jack, but other CVs can be  
 
Envelope Generator is patched into this jack, but other CVs can be  
used here for variable gain control of the VCA output.
+
used here for variable gain control of the VCA output. This input responds to a 0-5VDC control voltage which controls the master gain. No output will be present at 0V.
  
 
Ext Mod jack allows for modulation sources to be input into the VCA.
 
Ext Mod jack allows for modulation sources to be input into the VCA.
Line 9: Line 11:
 
Ext Mod control allows for variable control of the amount the CV  
 
Ext Mod control allows for variable control of the amount the CV  
 
effects the VCA. As the control is rotated clockwise, the modulation  
 
effects the VCA. As the control is rotated clockwise, the modulation  
goes from amplitude modulation to ring modulation.
+
goes from amplitude modulation through ring modulation then, back through amplitude modulation. This modulation affects the audio input signal, not the master gain.
  
 
Output Level control allows for overall output level adjustment.
 
Output Level control allows for overall output level adjustment.
Line 15: Line 17:
 
Main Output jack provided for sending the VCA output to another module,  
 
Main Output jack provided for sending the VCA output to another module,  
 
an amplifier or headphones. The jack is a TRS jack and will source  
 
an amplifier or headphones. The jack is a TRS jack and will source  
both sides of a set of headphones.
+
both sides of a set of headphones in dual mono.

Revision as of 13:49, 21 December 2008

VCA.jpg

Audio In jack for injecting audio signals into the amplifier.

Env In Jack for inputting the main gain control signal. Primarily, an Envelope Generator is patched into this jack, but other CVs can be used here for variable gain control of the VCA output. This input responds to a 0-5VDC control voltage which controls the master gain. No output will be present at 0V.

Ext Mod jack allows for modulation sources to be input into the VCA.

Ext Mod control allows for variable control of the amount the CV effects the VCA. As the control is rotated clockwise, the modulation goes from amplitude modulation through ring modulation then, back through amplitude modulation. This modulation affects the audio input signal, not the master gain.

Output Level control allows for overall output level adjustment.

Main Output jack provided for sending the VCA output to another module, an amplifier or headphones. The jack is a TRS jack and will source both sides of a set of headphones in dual mono.