Transfer Function 4+
Magnitude, Phase, Coherence
Andrew Smith
Designed for iPad
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- $49.99
- Offers In-App Purchases
Screenshots
Description
Transfer Function is a dual-FFT acoustic analysis app that is used for sound system audio analysis. Since it can operate with music as the signal source, it can be used during a musical performance to monitor and turn the system equalization during the show.
Transfer function includes:
-- Magnitude Graph
-- Phase Graph
-- Coherence Plot
-- Delay Finder
-- Signal Generator
Normally a transfer function requires a two-channel interface, and that is true with this one, also, if you want to use it with program material (music).
However, you can use our Transfer Funciton with the internal iOS microphone, if you can send the pink noise generator output to the sound system input. In this configuration, the internal generator is routed back to the input as the reference channel. You can measure delay, magnitude, and phase using this setup.
When you use Transfer Function with a two-channel audio interface to run, such as the Studio Six Digital iAudioInterface2, then you can also use any audio source as the test signal, including music.
See our website for more information.
What’s New
Version 5.4
-Updated for latest iOS devices and calibrations
-Bug fixes and operational improvements
Ratings and Reviews
Unusable on 5th Gen iPad Air
Jan 8, 2025 - Finally got around to testing out the app. In a controlled environment under a variety of circumstances, program is unable to make reliable delay calculations on an up to date 5th gen iPad Air. Even with a “save photo” feature there is no meaningful way to compare two FFT graphs in-app. Major doubt is also thrown on the accuracy of the results given the wild variance in results on the delay finder.
I downloaded the app with the hopes of using it to calculate software and hardware latencies, as well as quickly time and phase align PA before shows - I can do neither of these things. Disappointed and would like a refund.
App Privacy
The developer, Andrew Smith, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.
Data Not Collected
The developer does not collect any data from this app.
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Information
- Seller
- Andrew Smith
- Size
- 29.8 MB
- Category
- Music
- Compatibility
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- iPhone
- Requires iOS 13.0 or later.
- iPad
- Requires iPadOS 13.0 or later.
- iPod touch
- Requires iOS 13.0 or later.
- Mac
- Requires macOS 11.0 or later and a Mac with Apple M1 chip or later.
- Apple Vision
- Requires visionOS 1.0 or later.
- Languages
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English, French, German, Japanese, Polish, Simplified Chinese, Swedish
- Age Rating
- 4+
- Copyright
- © Andrew Smith
- Price
- $49.99
- In-App Purchases
-
- Reference Curves Option $14.99