Friday, February 22, 2013

VA synth

Where am I and what is the plan regarding the VA synth?
As mentioned, my plan is to do a Juno106 workalike (a workalike, not a clone). In that respect, I have the following blocks developed and working:
LFO: I have extended it to support square and sawtooth and I am missing the delay.
DCO: pretty much working as in the Juno, with the addition of triangular wave. I am planning on adding wave table DCO also.
HPF: this is currently missing in my design, but will add it soon.
LPF: I have the 24db/Oct resonant filter. I am not very impressed with its sound, so I might try other filters. I am missing the LFO control of the filter also and the keyboard tracking. I am using "Moog VCF variation 2" from here.
ADSR: done and working.
DCA: done and working.
CHORUS: done and working, but I want to make it a stereo chorus (currently both speakers get the same signal).

Other than that, I am sampling at 88200Hz and still need to add a low pass filter before downsampling to remove possible aliasing. Hopefully the 2 missing filters, HPF and anti aliasing filter, will not take much CPU.
I also want to add an arpeggiator and a step sequencer going to DCO, LPF, DCA to add some "weirdness".

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