Equations: Graphing Calculator Synthesizer by Decent Samples

Playing around with the Equations Synth video upload by Peter Kirn

"I am not going to write a Kraftwerk reference here.

This is too awesome. Review -- and more on the TI calculator hardware and how it's been used for music:

https://cdm.link/making-music-on-the-..."

via https://www.decentsamples.com

Where mathematics meets music: a unique synthesizer plugin that puts the power of mathematical expression directly at your fingertips. Instead of selecting from preset waveforms, you write your own equations to generate completely unique sounds.

Equation Synth is a unique synthesizer plugin that puts the power of mathematical expression directly at your fingertips. Instead of selecting from preset waveforms, you write your own equations to generate completely unique sounds. Whether you’re a sound designer seeking unprecedented sonic possibilities or a music producer looking for fresh, distinctive textures, Equation Synth opens up an infinite universe of waveforms limited only by your imagination.

Comprehensive Modulation System

Bring your equations to life with an extensive modulation matrix featuring:

Modulation Sources:

3 Envelopes (ADSR) with tempo sync options
3 LFOs with multiple waveform shapes (sine, square, saw), tempo sync, and delay
Note Velocity for dynamic expression
Modwheel for performance control
MPE Support: Timbre and Pressure for expressive multi-dimensional control
Modulation Destinations:

Route modulation to virtually any parameter including:

Volume, Pitch (Coarse/Fine)
All Equation Parameters (A, B, C, D)
Graph parameters (Scale X/Y, Offset X)
Filter Cutoff and Resonance
Noise Level
Effect parameters (Chorus, Delay, Reverb, and more)

Effects Chain

Polish your equation-based sounds with a professional effects suite:

Delay: Stereo offset, feedback, tempo-synced timing
Harmonic Reverb: Room size, damping, and mix controls
Chorus: Modulation depth and rate
Tape Simulator: Wow, Flutter, Saturation, as well as various tape player emulations
Intuitive Interface Design

Inspired by classic calculator aesthetics, Equation Synth features:

LCD-style display showing equation input and real-time waveform visualization
Tabbed interface organizing Equation, Synth, Modulation, Effects, and Note settings
Integrated help system with context-sensitive guidance
Virtual MIDI keyboard for quick auditioning
Scalable, resizable window
Preset management system for saving and recalling your creations
Advanced MIDI & MPE Capabilities


MPE (MIDI Polyphonic Expression) support with configurable channel count
Adjustable pitch bend ranges (global and per-note)
MIDI input channel selection
MPE-aware modulation for expressive performance
Advanced Tuning Capabilities

Support for KBM and SCL scale loading
Support for MTS-ESP
Technical Specifications

Formats: VST, VST3, AU, AAX, Standalone
Platforms: macOS, Windows, Linux
Architecture: 64-bit
Sample Rate: Up to 192kHz support
Developer: Decidedly / Decent Samples
Perfect For:

Sound Designers creating unique signature sounds
Electronic Musicians seeking fresh, unconventional textures
Composers scoring film, games, and media with distinctive timbres
Educators teaching the relationship between mathematics and sound
Experimentalists exploring the boundaries of synthesis
What Sets Equation Synth Apart

Unlike traditional synthesizers with fixed oscillator algorithms, Equation Synth gives you complete control over waveform generation. You’re not limited to variations of sine, saw, square, and triangle waves—you can create waveforms that have never existed before. The combination of mathematical flexibility, deep modulation routing, and professional effects processing makes Equation Synth a truly unique tool in any producer’s arsenal.

Discover sounds you’ve never heard before. Create waveforms that don’t exist anywhere else. Welcome to Equation Synth.