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Re: Granular Synthesis on MOTM

2002-07-13 by mmarsh100

Hi Michel -

I'm still trying to understand this one, too!  Further experiments 
revealed that if you change the duty cycle of the pulse, you get a 
different timbre.  Also curious: if you use both GAT and TRIGGER you 
get no sound at all!

Did you hear #8?  That was a mono chord from a synth into 
4 'granularizers' spread in a wide stereo field.  Really cooL!

Mike

--- In motm@y..., "michelhav" <anymail@x> wrote:
> Hi Mike,
> 
> Thanks for your interesting 'granular sound' tip. I noticed that 
if 
> you choose the GATE IN on the EG instead of the TRIG and increase 
the 
> pitch of oscillator one, you get a different, heavier distorted 
> sound. But listening to the demo's I think you already found that 
> out... 
> 
> Michel
> 
> 
> --- In motm@y..., "mmarsh100" <mmarsh@s...> wrote:
> > Hi All -
> > 
> > Just back from vacation.  Two weeks away from all musical tools 
is 
> a 
> > recipe for epiphane, albeit a painful wait to try things out.
> > 
> > Here is a way to do basic granular synthesis using only four 
> > modules: two oscillators, on EG, and a VCA.  For theory check 
out 
> > Curtis Roads' "Microsound" from MIT Press.
> > 
> > Oscillator one is set at 20 Hz to about 800 Hz (between about 2 
and 
> > 4.5 on the COURSE knob) and will output pulses in the 10 to 50 
msec 
> > range (you do the math, I suck at it).  The PULSE output is sent 
to 
> > the GATE or TRIGGER in of the EG. The EG's DECAY and RELEASE are 
> set 
> > to zero with ATTACK and SUSTAIN set to about 2.  The + OUT of 
the 
> EG 
> > goes to a 110 CV IN.  Another oscillator's SIN out is sent to 
the 
> > 110's IN (this is the signal to be granulated).  Send the out to 
> the 
> > console, but if you have a scope send it there, too.
> > 
> > Play with the COURSE knob on oscillator 1 and the ATTACK and 
> SUSTAIN 
> > values on the EG.
> > 
> > What's happening is that we are 'granulating' the output of the 
> > second oscillator.  Each granule has it's own little envelope 
but 
> is 
> > played at a rate below which we can detect pitch.  Taken 
together 
> > the grains create a new timbre and texture.
> > 
> > Cool!
> > 
> > Try feeding ANYTHING into the IN of the VCA (guitar, vocals, 
drum 
> > loops, sequences).  Paul suggested MiniWave, which is a great 
> idea...
> > 
> > Mike
> > 
> > PS - Paul, the 700 doesn't work as well for 'chopping' as you 
put 
> > it, because the 'envelope' in AUDIO mode is fixed at 5 msec 
which 
> is 
> > not that usefule in granular synthesis.  Makes a cool weird 
noise, 
> > though!
> > 
> > m

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