Name: FFT
Price: 10.99 USD
Rating: 4.4 (34 reviews)
Author: Andrew Smith

86.0LEGITIMACY SCORE
87.0SAFETY SCORE
4+CONTENT RATING
$10.99PRICE

What is FFT? Description of FFT 3062 chars

FFT is a high-resolution audio analysis tool for the iPhone and iPod touch. It uses the Fast Fourier Transform to analyze incoming audio, and displays a very detailed graph of amplitude vs. frequency.

Use this app with the built-in iOS device microphone, or upgrade to our iAudioInterface2 or iTestMic for a complete professional solution.

*** Designed for Acoustical Analysis

This application has been designed for acoustics work, and so the bins have been normalized to octaves, to get a display that will show a flat line for pink noise. You can control both the level of graph smoothing and decay time, to get as much or as little detail as you require.

You can also control the dB resolution of the graph, as well as the frequency range that is displayed.

*** Includes Signal Generator

Included in this app is the engine from our Generator app, which is a low-distortion, artifact-free signal generator. The signal generator appears as a heads-up display when you tap the icon, so you can see the graph while you adjust the generator. Generate sine waves, square waves (within limits), white noise, and pink noise, optionally in psuedo-balanced mode. All waveforms are generated in real time using high-precision algorithms.

*** Cursor Readout

Move your finger across the screen to get a cursor to read out exact dB levels and frequencies.

*** Touch-GUI Controls

Use a vertical pinch-open gesture to expand the dB scale.

Use a horizontal pinch-open gesture to expand the frequency scale.

*** Graph Smoothing

Smooth the graph by octave, 1/3, 1/6, 1/12, or 1/24 octave. Adjust the decay time from 0.5 seconds, for a very fast fluid display, to 8 seconds, or use Peak Hold or Average mode. Average mode is a true equal-weighted average, which can run continuously.

*** Peak Tracking

Turn on Peak Tracking to have FFT automatically find a label the frequency of the highest peak on your graph.

*** Tune the Parameters

Set the FFT size from 4096 to 32k points (depending on iOS device) , or select Equal Points Per Octave mode, for high-resolution analysis, even at low frequencies.

*** Calibration

FFT comes calibrated for the typical iPad, iPod touch, or iPhone microphone, and you can adjust the calibration. Microphone compensation files tailored to each iOS device are automatically applied.

*** Save and Recall

When your analysis is complete, you can save the graph image to your photo roll to include in a report, or export the data in an XLS file.

*** Display Multiple Graphs

Show a recalled graph on the screen in a different color.

*** Difference Mode

Use a stored graph as a baseline that is subtracted from the current graph in real time.

*** RTA or FFT?

If you are wondering if you should download this app or our FFT app, check out our website, we have a page devoted to this topic.

*** Other Audio Apps

Also, check out our other great audio and acoustics apps: AudioTools, our premier suite of audio and acoustics analysis apps, SPL, SPL Graph, for recording SPL over time, RTA, RT60, Generator, and Speaker Pop.

FFT App User Reviews
FFT Pros
FFT Cons
Is FFT legit?
Should I download FFT?
FFT Screenshots
Product details of FFT

FFT App User Reviews

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FFT Pros

✓ Stop wondering and just BUY IT! Definitely worth it.Apps like this make an iphone worth owning. I am a pro sound engineer, I work a lot of different rooms. Believe the hype, this app is VERY accurate. The only place it needs improvement is in the sub frequencies (below about 150), but this is a limitation of the iphone internal mic-can't wait for the stereo mic these guys are making to release. BUY IT! You won't regret it..Take it from meVersion: 0

✓ Expensive but excellentI've got literally hundreds of apps, too many to fit on my iPhone, this however is on of the few that remain in the first few pages of apps. It's definitely a gadget but as a geek I love it. It's accurate and easy to use, the sine-wave generator can replicate tones exactly as sampled fooling many people into thinking they're hearing the original. It works notably better on the new 3GS as the sampling rate is higher, it will happily sample and generate tones from a few 10s of Hz to 20KHz in real-time. FFTs are a very "simple" way to divide up sound samples and produce histograms of the frequencies, it's amazing how well this can be done in such a small device. The algorithm is relatively simple and there are many open source implementations but this one is nicely packaged and perfectly designed for the iPhone. I've bought many apps in the past that have been erased after a few days, I've had this now since the 3GS came out and I still use it regularly both as a toy and, well, er, well, as a toy. :-) -John-.JtdaviesVersion: 0

✓ FFT Positive Reviews

FFT Cons

✗ Not exactly a real discrete FFTThe spectrum is displayed as a continuous graph rather than being discrete vertical lines for each frequency present. Makes it very hard to use for real quantitative analysis. Why could they not have done it the correct way??.FreddyUUUVersion: 6.7

✗ Good App Gone BadUpdate Crashes every time. Deleted and re-installed. Same thing. Developer must not care about reviews. I hate to say anything bad about this app, because I use it all the time, but the new patch I just installed is buggy. It's crashed 3 times in about a minute. Every time you double tap the screen it crashes. I made a change in the options and it crashed. I ran my memory management app and it did the same thing..FleaheadVersion: 4.7

✗ FFT Negative Reviews

Is FFT legit?

✅ Yes. FFT is 100% legit to us. This conclusion was arrived at by running over 34 FFT user reviews through our NLP machine learning process to determine if users believe the app is legitimate or not. Based on this, AppSupports Legitimacy Score for FFT is 86.0/100.

Is FFT safe?

✅ Yes. FFT is quiet safe to use. This is based on our NLP analysis of over 34 user reviews sourced from the IOS appstore and the appstore cumulative rating of 4.4/5. AppSupports Safety Score for FFT is 87.0/100.