[sdiy] asm1-user's guide

Luciano Hormazabal hechesi at yahoo.com
Tue Nov 11 05:02:05 CET 2003


well now that would save you a lot of time, answering stupid questions like mine, which have probably been asked by many more before.
 
now what i would do is something like the asm-1 guide for dummies, now that would be cool lol
 
then you could answer all the stupid questions like (assume the schematics in laurie's new page and that i want to connect a keyboard directly to the asm-1 without midi-cv):
 
VCO
 
What are all the inputs vc1, vc2...6if its a summing amplifier why not use only one resistor??: the synth is monophonic anyway.
 
well what are the other inputs anyway?? what could i ever want to connect in sync??
 
PWM: that's for symmetry isn't it??
 
can you use the sawtooth and the pulse output at the same time??
 
what is the deal if its linear or exponential??? i mean you just change the values of the resistors to trigger the module, isn't it?? or is another module recieving just exp voltaje, so if i use a linear one things would get ugly??
 
VCA
 
CV1, CV2, Cv3... okay what do i plug in here, the square wave from the VCO?? wait: there's an input below....AAAA!!
 
what is the max voltaje that the VCA can recieve without clipping?? what happens if i connect the output of the VCA to the input of the other VCA??
 
Is the output of the VCA what we could call the "regular" audio output?? what happens  if i connect the VCO directly to the amp?? what voltaje is the audio amplifier expecting?? (i know this one depends on the amp, but generally speaking)
 
ADSR
 
what are the brown spots in the circuit??
 
what voltaje is the gate expecting?? how can i feed it using the same input the VCO gets?? or is there a more efficient way??
 
envelope out... how can you shape the waveform with this??? where does it go into?? (assume you want to shape the waveform, not the lfo or anything)
 
VCF
 
here i don't have a clue what the outputs and inputs are. if you just want to use the "cutoff and resonance" the way you do in a regular keyboard what do you do???
 
in the VCF which resistor is the cutoff?? is it p201 (in laurie's)?? 
 
 
the other components i can fairly understand them. well those are not all my questions, just the ones that come to my mind right now.
 
first of all i want to thank you for all your support for everyone in the list. it means a lot for someone like me when i ask a question and in ten minutes it is already answered!!! thats really something, guys. keep it up.
 
now these questions must be fairly obvious for all of you guys, but believe me, i am lost in some things!! i am an electronics student so i am becoming familiar with the filters and what they do, but you must understand that i am new to the world of synth diy. when i can finally build the asm-1 i will make a webpage called asm-1 for dummies.. lol. anyway i certainly hope the day will come soon when i can stop asking and start answering.
 
thanks for your help, guys. sincerely.




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