Curves & Membranes 1.4.0 | Expressive MPE & Paraphonic Synth Sounds

video upload by Unusable Engineering

"Curves & Membranes 1.4.0 adds new MPE performance, 4-voice paraphonic synthesis, and velocity-controlled waveform morphing. This no-talking sound demo goes through 10 new presets using those features, from expressive pads and keyboard sounds to rhythmic and more experimental synth patches.

There are 20 new presets in the update in total. The ten in this video are played first dry and then with some Geometry Reverb added.

The three main new performance features are:

Expression / MPE Mode
MPE pressure controls the amplitude envelope and oscillator brightness, CC74 / Slide moves through the Oscillator Preset slots, and pitch bend is expanded to 48 semitones. Preset Slew controls how smoothly CC74 interpolates between waveform geometries.

This means an MPE controller can move continuously between very different oscillator shapes while pressure and pitch bend remain independent parts of the performance.

4-Voice Paraphonic Mode
Curves & Membranes can now play four independent oscillator voices, each with its own envelope, feeding into the shared Membrane filter.

With Expression Mode active, each voice gets independent MPE pressure, pitch bend, and CC74-controlled oscillator geometry.

Velocity → Slot Morphing
With the clock off and KBD RST enabled, note velocity selects the Oscillator Preset slot or an interpolated position between slots.

So velocity can directly change the waveform, Bézier/Node geometry, detune, fold/clip state, LFO settings, and other oscillator parameters stored in the slots.

It makes patches respond to playing dynamics with timbral movement, rather than velocity only changing volume or filter cutoff.

Version 1.4.0 also includes improved waveform editing, slot copy/paste, multi-step undo and redo, smoother Bézier-to-Node morphing, improved anti-aliasing, and further interface and performance optimization.

Presets

00:00 v140 Steppy 4Voice
00:36 v140 4 Voice Velo Strings
01:13 v140 Veloshape Mono
01:41 v140 MPE Mono
02:24 v140 MPE Para
03:01 v140 Add Geometry Verb
03:41 v140 Noise 4Voice Velo
04:19 v140 4 Voice Rhythmic
04:48 v140 Er Du Fuld Eller 4 Voice
05:26 v140 Velo Alive KBD

Curves & Membranes 1.4.0 is expected to be released on September 1, 2026.

More information:
www.unusable.net"