TimeFX Reverb

TfxReverb is a reverb effect AudioUnit Extension plugin. It uses algorithm to generate digital reverb sound. TfxReverb is designed for simple and easy operation. When auto size mode is enabled, number of parameters can be controlled by a single dial to adjust size of the reverb sound, which can be synced to tempo.

It features delay lines which are inspired by BBD (bucket brigade device). The delay line uses fixed length buffer and an artificial clock to sample input signal in variable sampling rate. When the delay time is changed, the delay line can produce pitch change effect which is similar to the behavior of the BBD based unit.


TfxReverb  (AUv3)
  • Input lowpass filter: From 1KHz to 20KHz
  • Input high-pass filter: From 20Hz to 500Hz
  • LFO Frequency: From 0.01Hz to 10Hz
  • LFO Intensity: From 0.0 to 1.0
  • Pre Delay: From 1ms to 100ms 
  • Size: From 0% to 100%
  • Auto size mode: On / Off
  • Decay: From 0% to 100%
  • Damp: From 0% to 100%
  • Output Lowpass Filter: From 1KHz to 20KHz
  • Early/Late Mix: From 0% to 100%
  • Dry/Wet Mix: From 0% to 100%
  • Tempo Sync: On / Off
  • Tempo (manual) : From 1bpm to 999bpm 
  • Effect Switch: On / Off
Host application uses system audio input as an audio source and processed audio signal is routed to the system audio output.


Input lowpass filter

Range from1KHz to 20KHz

Input high-pass filter

Range from 20Hz to 500Hz

LFO Frequency

Range from 0.01Hz to 10Hz

LFO Intensity

Range from 0.0 to 1.0

Pre Delay

Range from 1ms to 100ms


Range from 0% to 100%

Auto Size Mode



Range from 0% to 100%


Range from 0% to 100%

Output Lowpass Filter

Range from1KHz to 20KHz

Early/Late Mix

Range from 0% to 100%

Dry/Wet Mix

Range from 0% to 100%

Tempo Sync


Tempo (manual)

Range from 1 bpm to 999 bpm

Effect Switch


*Appearance and specification of products are subject to change without notice.


User Guide (V1.2)

TfxReverb is available now on the Apple App Store.

Release Note

Version 1.0

  • Initial release

Version 1.1

Version 1.1 contains improvements and bug fixes.
  • Support iOS 14 / iPadOS 14.

Version 1.2

Version 1.2 contains improvements and bug fixes.
  • Support iOS 15 / iPadOS 15.