Throbbing Gristleizer emulation with Pure Data

YouTube via NoizeHack

"I made this emulation of the Gristleizer in pure data. The sound is coming from a budda machine. this is an effect that has a LFO (low frequency oscillator) that controls either a VCF (voltage controlled filter) moves the band on a bandpass filter or VCA (voltage controlled amplitude) modulates the amplitude like tremolo. the bias adjusts the DC Bias, I'm not sure that part works well in this patch yet."

Virtual Drone Lab - drone synthesizer made in pure data


"This is a software emulation of the drone lab v2 designed by casper electronics http://casperelectronics.com/finished... is the original hardware version. this is built in pure data. I will upload the patch for you to download when it is finished, a few little things still need to be worked out. There are 4 square wave oscillators, 4 square wave tremolos that are based off dividing of the master square wave clock (with inversion possible). there is a lowpass filter, distortion and a bandpass filter at the end. The filters might need some more work, also I think i put que for the width of the bandpass and it is just Q, oops."

3 parallel 10 step sequencers and square wave oscillators in pure data


"Ok so I have been reading a bunch about atari punk consoles with 555 chips and 10 step sequencers with 4017 chips. so playing around with pure data I made a triple 555 4017 like combination. All three waveforms are added together, each one is from 0 to 1, so adding three together gets you in the 0 to 3 range. then the signal is clipped to -1 to 1 to add some nice distortion and interesting gate effects when the signal is above 1 and is just lobbed off. ass you can see in the oscilloscope view the waves are always moving, even when there is a pause in noise.

Also there is an interesting effect, I'm not sure if it is the sequencers getting out of step, or the phase of the oscillators getting out of step, or something to do with the expr~ calculation, but the waves don't continually line up the same way, adding some interest to the equation.

around 2:40 I speed the clock way up and get some cool sounds by cramming all ten steps together into almost a single tone."

Update via Trevor in the comments: "Hey thanks for posting some of my videos.

I just finished setting up my new site where you can download some of these patches. I will upload more patches later.

http://noizehack.com/virtual-drone-lab"