MATRIXSYNTH: After Later Audio Popple // Stereo Eurorack Filter - demo & LOTS of patch tips

Monday, September 28, 2020

After Later Audio Popple // Stereo Eurorack Filter - demo & LOTS of patch tips


"Here’s the new stereo Eurorack filter ‘Popple’ from Seattle based After Later Audio. It’s a stereo filter design based on the Mutable Instruments Ripples v1 circuit. You have stereo inputs and then stereo outputs for band pass, 2 pole low pass and 4 pole low pass. Stereo cut off, and resonant controls as well as CV inputs are present plus the addition of attenuverters to fit the cut off frequencies on the left and right sides and there’s addition left and right FM inputs to modulate the two sides of the stereo filter independently. As always I’ve tried to cram plenty of patch tips into the video so I hope you gain some ideas and patch tips for your own systems."

00:00 Hello & patch previews
01:13 Popple feature run down
02:12 Raw filter sweeps demo
03:36 Dual mono filtering
05:11 Filtering stereo beats with ducking, auto wah and audio rate modulations
07:22 Vocal & formant like tones with audio rate modulation
08:51 FM synthesis with dual oscillating sines
10:20 Percussion synthesis (kicks and FM overtones)
11:56 Quick tips for mono to stereo patching
12:56 Dual LFO oscillations & sub audio wobbles
14:10 Filter pings
15:14 Stereo feedback turning sine waves into saw waves
17:03 Dual slew limiter and resonant LFOs

"Popple is an 8hp multimode stereo filter based on the Mutable Instruments Ripples V1 filter section. Popple maintains the buttery smoothness of Ripples filter while giving you two separate audio paths. The audio paths share a resonance, control, a frequency cutoff control, resonance CV input, and a v/oct cutoff CV input. Each channel then has its own cutoff CV input with attenuverters (which are normalled to a 2.5V signal).

Popple will also self-oscillate at high resonance settings, when coupled with the v/oct CV control. Popple can act as a dual sine wave oscialltor as well.

Presale notes

We are running a presale right now. Modules will ship on Oct 7th. All source files will be released on our Github on Oct 7th."

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