TfxEcho

by Ryo Togawa · Music · $4.99

On the App Store since July 2020 · Data updated 2026-10-14

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TfxEcho is made and published by Ryo Togawa. AppBrain is an independent app data site and isn't affiliated with Ryo Togawa. The app name, icon, screenshots and description belong to Ryo Togawa and are shown as published on the App Store.

AppBrain's verdict

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Rating on App Store: 4.67; 12 ratings
Last updated: January 15, 2026

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Version: 1.9
Launched: July 2020

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Technology

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Price: $4.99
App size: 1.31 MB
Content rating: Everyone

Technologies used by TfxEcho

About the app and developer

About TfxEcho

TfxEcho is a music app developed by Ryo Togawa.

What is the rating of TfxEcho?

TfxEcho is rated 4.67 out of 5 stars, based on 12 ratings.

Is TfxEcho free?

TfxEcho costs $4.99. The app size is 1.31 MB. The latest version available is 1.9. The last update was on January 15, 2026.

What are the requirements for TfxEcho?

The app has a content rating of Everyone. The app has been available on the App Store since July 2020.

Developer information for Ryo Togawa

Ryo Togawa

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Store listing

By Ryo Togawa, from the App Store

Screenshots by Ryo Togawa, from the the App Store listing

Description by Ryo Togawa Written by the developer, not by AppBrain. Click to read.

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

AudioUnit Extension

- 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.

Host Application

Host application uses system audio input as an audio source and processed audio signal is routed to the system audio output.

Official page on the App Store

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