Summary

QDelay is a free, open-source dual delay audio plugin designed to offer many features commonly found in commercial delay effects. It aims to be a quick and versatile delay tool without premium restrictions or online activations.

Features

• Stereo dual delay with independent delay times and various modes including Ping-Pong and Tap modes.
• Feedback width control and swing/feel offset for rhythmic variation.
• Reverse delay and accent emphasis on odd or even taps.
• Parametric equalizer applied to both feedback and input signals.
• Diffusion processing on pre- or post-delay signals to soften echoes.
• Time modulation of delay lines and pitch shifting on feedback or post-delay signals.
• Saturation effects with controls for color, bias, and dynamics, applicable pre/post delay and on feedback path for tape-like distortion.
• Ducking to reduce the delayed signal volume during input to avoid masking.
• Tape wow and flutter emulations to add analog tone variation.
• Preview display of delay taps and configurable routing options for diffusion and pitch shift.

Technical Details and Platform Support

QDelay is available as VST3 on Windows and macOS, LV2 and VST3 on Linux, and AU on macOS. It is developed using C++ and JUCE framework, including adaptations of existing open-source implementations for pitch shifting and tape distortion emulations.

Intended Users

QDelay suits music producers and sound designers seeking a flexible and feature-rich delay effect without cost or licensing restrictions, as an alternative to commercial plugins like Deelay or EchoBoy.