TfxEcho
TimeFX Echo / Delay
TfxEcho is an echo effect AudioUnit Extension plugin. It uses delay lines which are inspired by BBD (bucket brigade device). BBD is used in various analog delay unit and is known for its warm and dark sound. 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 analog delay unit.
The delay line is inspired by BBD, but it is not emulation of the any particular BBD. Unlike the typical BBD based delay unit, frequency range of the delay line is not limited. The delay line is capable to capture signal in higher frequency up to about 22KHz.
Features
- Delay Time: From 20 ms to 1200 ms
- Feedback: From 0 % to 100 %
- Adjustable lowpass filter and high-pass filter.
- Modulation rate: From 0.01 Hz to 10 Hz
- Modulation width: From 0 ms to +/- 10 ms
- Delay time can be synced to tempo provided by the host application.
Specifications
Delay Time
Range from 20ms to 1200ms
Feedback
Range from 0% to 100%
Mix
Range from 0% to 100%
Highpass Filter
Range from 20Hz to 500Hz
Lowpass Filter
Range from 1000Hz to 20000Hz
LFO Frequency
Range from 0.01Hz to 10Hz
LFO Intensity
Range from 0.0 to 1.0 (from 0ms to +/- 10ms)
Effect Switch
ON or OFF
Sync Switch
ON or OFF
Modulation Switch
ON or OFF
Frequency Range
From 0Hz to 22.05KHz (effect)
*Appearance and specification of products are subject to change without notice.
TfxEcho is available now on the Apple App Store.
Release Note
Version 1.0
- Initial release
Version 1.1
- Limiter is inserted in feedback loop to prevent delay lines from blowing up.
Version 1.2
- Fixed distortion caused by large amount of feedback.
- Fixed click noise caused by turning effect button on or off.
Version 1.3
- Fixed a problem in initialization process of AudioUnit Extension which may leads the AudioUnit Extension to crash or may leads state recovery to fail.
Version 1.4
- Support iOS 14 / iPadOS 14.
Version 1.5
- Support iOS 15 / iPadOS 15.
Version 1.6
- Support iOS 16 / iPadOS 16.
Version 1.7
- Fixed a problem that AudioUnit Extension doesn’t load in host application.
Version 1.8
- Support iOS 17 / iPadOS 17.