A Free Delay Plugin That Knows Music Theory

Soft Loop Audio says that Harmonic Echo is a generative MIDI delay that turns simple notes into evolving, scale-locked sequences. It works on Mac, Windows, and Linux. Here's the details in their own words...

Harmonic Echo: The Delay Plugin That Knows Music Theory

While standard delays repeat the past, Harmonic Echo creates something new.

This is a generative MIDI effect that transforms simple input into evolving, musical sequences. Instead of just repeating your notes, it climbs, falls, and harmonizes through the scale of your choice--acting like a creative co-pilot in real-time.

Why This Plugin is Different

• Intelligent Harmony: Select your Key and Mode (Major, Minor, Lydian, etc.). Every echo snaps perfectly to the scale, so you never hit a wrong note.
• Playable Visualization: The interface isn't just a display--it's an instrument. Use the interactive piano roll to audition scales and trigger echoes manually.
• Polymetric Phrasing: The unique "Hold" engine groups echoes into rhythmic clusters, allowing you to break the standard grid and create complex, weaving patterns.
• Visual Feedback: Watch your harmonies cascade in real-time with a physics-inspired UI that visualizes velocity and decay.

 

What You Can Create

• Instant Chords: Turn single notes into lush 7th and 9th stacks.
• Ambient Textures: Generate "Brian Eno-style" drifting clouds.
• Rhythmic Hooks: Create driving basslines and trap-style ratchets.

Pricing and Availability:

Free, or name a fair price.

More information:

• Harmonic Echo