2hp — MMF

• Manual PDF

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Creative Patching Ideas for the MMF 2HP Multimode Filter

The MMF is a versatile 2HP analog multi-mode filter offering simultaneous low-pass (LP), high-pass (HP), and band-pass (BP) outputs with voltage control over the cutoff frequency and resonance. Here’s how you can stretch its sonic capabilities in your Eurorack system:

1. Triple-Output Parallel Processing

• Try This: Split a complex audio source (e.g., a multi-oscillator drone or drum loop) into all three outputs (LP, HP, BP).
• Process Together: Send each output to different destinations for processing:
• LP → Reverb (e.g., Erica Synths Pico DSP)
• BP → Delay (e.g., Make Noise Mimeophon)
• HP → Wavefolder or Distortion (e.g., Tiptop Audio Fold Processor or Intellijel uFold)
• Combine Back: Mix these individually processed outputs for a rich, multi-layered effect.

2. Dynamic Spectral Animation Using CV

• Cutoff Modulation: Patch an LFO (e.g., Doepfer A-145, or Maths ch1/4 if available) into the FREQ CV input for slow morphing or fast squelchy sweeps.
• Envelope Animation: Use an envelope generator (e.g., Make Noise Function, Intellijel Quadra) to CV the cutoff or resonance, shaping filter movement with your note events.
• Sequencer Pings: Use rhythmic gates/triggers from a sequencer (e.g., Pamela’s New Workout) into a sample-and-hold or stepped random CV, then patch into FREQ for unpredictable filter motion.

3. Self-Oscillation & Resonant Percussion

• Ping It: With high RESO settings, “ping” the filter by sending short envelopes or triggers to the audio input.
• Result: You get a resonant, sine-like burst—great for modular percussion, bell tones, or tuned drums. The frequency becomes “pitch”.

4. External CV Feedback

• Audio Feedback: Try patching the BP output back into the audio input, possibly through an attenuator or VCA for feedback control. You'll get wild, unstable textures and self-oscillating chaos.
• CV Feedback: Patch a spare BP or HP output into another module’s CV processing chain—attenuverter, VCA, or sample/hold—and return as a CV to the MMF’s FREQ or RESO input for evolving, self-modifying sounds.

5. Formant & Vowel Synthesis

• Formant Filtering: With three filter outputs, take three sound sources into a mixer, each processed with different filter types/positions. Modulate cutoffs individually to morph between synthetic vowel sounds.
• Voice-Like FX: Modulate cutoff frequencies with slightly offset LFOs for shimmering, voice-like textures.

6. Creative Sidechaining & Frequency Keying

• Envelope Follower: Feed a drum or vocal loop into an Envelope Follower module (e.g., Mutable Instruments Ears, or Doepfer A-119). Use the follower’s CV output to modulate the MMF’s cutoff or resonance, causing the filter to “duck” or “sweep” in response to another signal.

7. Waveshaping/Distortion Pre-Filter

• Waveshape First: Pass your oscillator through a wavefolder (e.g., Befaco Chopping Kinky), then into the MMF. Sweep the filter frequency to emphasize or tame specific harmonics of the distorted sound.

8. Stereo Spectral Splitter

• Clever Patch: Use LP for the left channel, HP for the right, or swap for extra weirdness. Pan both outputs for wide, spectral stereo effects!

Recommended Companion Modules

• Utility Modules: VCAs (for feedback, level control), Attenuverters, Mixers, Envelope Generators, LFOs
• Effect Processors: Reverb, Delay, Distortion/Wavefolder/Waveshaper
• Random/S&H: For chaotic CV animation
• Audio Splitter/Mult: To rout one signal into multiple filter types

More Info

Generated With Eurorack Processor