#29

Cold Macs seems to offer more than those 2. I’d go with what you know and like.

2 Likes
#30

I keep forgetting that I need to learn this module :laughing:

…oh ya, and teletype and just friends and guitar and everything else

4 Likes
#31

I wasn’t able to get these to make anything audible, but somewhere in there I stumbled into crazy tuned feedback by patching mac back into a few ins. Not sure the exact configuration.

Will it hurt anything to feed mac back in to the module, or is it like the minimoog headphone cable trick–essentially harmless?

#32

Experimentation encouraged!

#33

Well yeah but Trent mentions that he knew there was some way to make it oscillate, but specifically didn’t mention patching audio back in, which would be the first thing I figured one would try if they were trying to get the circuit to oscillate. But he didn’t mention that, so I wanted to get his formal ok before I kept trying that. Most things aren’t harmful in the world of patching, but some stuff, like using a mult as a mixer, is generally considered to be a bad idea if you want to prolong the life of your gear

#34

I used to do this all the time - not a problem. Actually it’s one of the things that makes it such a great module

2 Likes
Favorite Filters
#35

been wanting a dj style* filter for a long time, realized last night that this is easy to do with cold mac + 3 sisters.

*(by “dj style” i mean a filter that is all pass at noon, low-pass counterclockwise, high-pass clockwise)

source audio to sisters “all” input
sisters “high” output to cold mac “left” input
sisters “low” output to cold mac “right” input
cold mac “slope” output (the one on the far right, what is this called? trough?) to sisters “fm” input
sisters freq set to about 16, fm set full clockwise
listen to cold mac “right” output
use cold mac “survey” knob to adjust the filtering

throw a rave!

46 Likes
#37

This is why I love this forum.

6 Likes
#38

so true

also this is why ColdMac is so hard to explain…with some imagination, it’s a perfect expander for whatever you pair it with

#39

Cold Mac for President.

6 Likes
#40

I patched up Trent’s Cold Mac ‘Surveillance’ patch a couple week’s ago. Lost about 6 hours that day mesmerized at what I could get from it.

1 Like
#41

My lovely wife endowed me with a Cold Mac for Christmas and my brain broke. I managed to find this thread and am feeling a little more confident with it. This is a pretty simple expansion on the DJ filter @shellfritsch mentioned except I’m using a R*S VCFQ:

EDIT: some patch notes first…
*sequence coming from kria, delay/reverb from Clouds off-camera
**I’ll go ahead and tell ya the rest of this patch is just me being random

FORMANT Output > VCFQ In
VCFQ HI > CM LEFT In
VCFQ Low > CM RIGHT In
CM RIGHT Out > OR (1)
OR Out > FORMANT CV
SLOPE Out > VCF Freq CV
LOCATION > VC Q
VCFQ NOTCH > SURVEY
Monitor Cold Mac AND Output

5 Likes
#42

Get two.

Specific enough?

2 Likes
#43

Hi all,
finally spent some time playing about with this module.

Building on the white noise patch, I seem to have stumbled across Cold Mac acting as an oscillator. In fact a little like the benjolin in some aspects- which having looked at this thread makes sense if it’s half a triangle wave.

I was mucking about with building on the white noise patch (covered elsewhere), which was as follows:
Crease out to survey
monitor mac out
white noise when survey is turned at about 9.15 and 2.45

the patch for the oscillator is as follows (mdoudoroffs nomenclature):

Right out to crease
crease out to triat A
triat A to survey
Mac out to maths Ch 3
Maths sum out to left
monitor mac out via stackable

maths settings:
Ch 1 and 4 at 12
Ch 2 at 3o’clock
Ch 3 controls pitch between 12 and full CW

Survey know also controls the sound from 12o’clock to full CW

You can get some very unstable sounds out of it with a very subtle setting of Maths channel 3 just past 12o’clock.

Recording below - only have the ipad to record on at mo, so apologies for the quality.

Aaronautical

12 Likes
#44

Awesome patch thanks for sharing. Instead of using a Triat I tried using a VCA. Then used a sequencer (Pressure Points) to open the VCA to sequence a melody.

2 Likes
#45

You’re welcome !

I was playing around with this patch more yesterday, and there are a number of possible variations to being able to sequence. One of the most wild was to put three sisters into the feedback loop between the Mac out and left input (instead of maths). You can then use different outputs from the three sisters to go into the left and right inputs for cold Mac. Add some self patched fm in three sisters, and you can start getting some very mad sounds. Sequencing can be done by the three sisters 1v/8 input (though I didn’t manage to try this with a sequencer per se, but used a quantised shift register output from the disting).

#46

“if you don’t know why do you ask?”
David Tudor

4 Likes
#47

Here’s a Cold Mac waveshaper patch that I recently created, I called it MacTimbre:

CV in -> Survey
Audio In -> Left In & Crease In (stackcable)
Left out -> AND in
AND out -> Right in
Crease out -> Offset
Mac -> audio output

Obligatory sound example:

  • First a sine wave feeding the patch directly with varying survey
  • Then a decaying envelope controlling survey
  • Then a musical sequence where the ‘CV in’ is driven by the mixture of an LFO and another audio-rate sine wave

mac-timbre-patch.jpg480×640 60.5 KB

18 Likes
#48

Nice idea. I found that modulating Fade had a nice subtle wave shaping affect.

You inspired me to try and make a Wavefolder with cold mac

CV in -> Fade In
Audio IN -> Left In
Right Out -> Crease In
AND Out -> Offset
Crease Out -> Slope In
Slope Out -> Audio Output

Moving survey from 0 to 12 o clock will affect the nature of the fold. Alternatively you can send an external DC offset into Offset In to get greater range. Fade in alters the amplitude of the wave before the folding occurs.

Modulation to both Survey and Fade sounds pretty cool, especially when approaching audio rate

In this video Fade In is being modulated by an LFO and I’m slowly moving Survey from 0 - 12 o clock

13 Likes
#49

Hm, I think I found some sort of oscillation going on, but I just wanted to check my results against y’alls. I have:

OR out > CREASE in
MAC > OR1 in
MAC (mult) > listen

I get the highest pitches about 10:30 and then it bottoms out about to clicks at noon.

Then!

If you re-patch
AND out > CREASE in
and MAC > AND1 in

You get a lower pitch base starting about 12:30 to full CW. With some really interesting mechanical clicks. Putting stuff into AND2 gets you some pitch/timbral changes. And there’s even more noisy goodness if you patch CREASE out > SURVEY!

8 Likes