RTA Lite app for iPhone and iPad

4.0 ( 8080 ratings )

Utilities Music
Developer: Andrew Smith

Free

Current version: 2.8, last update: 6 years ago
First release : 05 Nov 2009
App size: 26.78 Mb

Real Time Analyzer for iPhone.

Now you can have an accurate and powerful Real Time Analyzer (RTA) for free on your iPhone or iPod touch.

This is the free ad-supported and feature-limited version of our popular and highly rated Studio Six Digital RTA app. It includes 1/3 octave mode and iPhone mic compensation.

Unlock this app by in-app purchase to remove ads and to get the same app as our full-featured RTA that is part of the AudioTools suite of apps, including 1/3 octave mode, a range of decay options, Peak Hold, Average Mode, Overlay Curves, Cursor Readout, Save/Recall, and much more!

Using ANSI type 1 or better filters, this RTA is very accurate, even in this lite version, since it uses the engine from our full version. Use it to check your sound system, monitor audio, and adjust your car audio system.

Try this out, and if you like it you can always upgrade to our full RTA version, or to AudioTools, which includes the full RTA and a lot more.

Check out iAudioInterface, our professional-audio test and measurement microphone, line input, and line output accessory made for iPod touch.

New! iTestMic is a direct plug-in test & measurement mic that has full pro specs.

The full version of RTA, and the version in AudioTools, is ad-free and adds Pink Noise generation, graph zooming, dB/frequency cursor, Max/Min bars, noise curve overlays, Save and Recall of graphs, external mic support, overall SPL A&C dB readout, and decay options including slower decay, and peak hold and average modes, and lots more.

*** iPhone mic Frequency Compensation Filter

RTA uses a special frequency-compensation filter to flatten the iPhone mic.

RTA is designed by the same team that built the Audio Toolbox acoustic analyzer.

*** Specifications and Devices

The internal iPhone mic has a noise floor near 30 dB, and clips around 105 dB. So, be aware that this tool will NOT work in very loud environments, such as clubs or some concerts.

Pros and cons of RTA Lite app for iPhone and iPad

RTA Lite app good for

Dont know how accurate this tool is, but it seems to be by listening and looking at the results. I had my stereo system playing at 98 hertz at 500hz.

... for basic home audio/theatre analysis/placement with nominal upgrade costs to either the full RTA ($10) or FFT ($20) - free frequency files (pink noise) can be found at audiocheck.net for those wanting to muck around, although the fuller features of zooming, decay, saving, curves and in FFT the 5hz extension (subwoofers) and detailed graphing seem easily worth the $10 or $20 to assist in properly setting up home audio or theatre...

Some bad moments

Not so good. It was showing frequencies that were not even present, unless my i phone was generating internal bass frequencies, that the RTA was picking up- NOT.

Have an iPhone 4s , worked great before I updated. The sensitivity is much too high, not sure if the app had been recalibrated to newer iPhones mics. Not useful to me now.

Just wondering why the latest update will not allow us to scroll up past 70db. I use this app for sourcing feedback issues in concerts. So my issues usually hit between 90-100 db, so currently this app is now useless to me. And its a shame because this app is so useful.

This used to be my go-to RTA app, but the recent update has rendered it completely useless. It needs to go above 80dB!! I should never have updated.

This is a very good application, however I dont understand why it does not graph up to 20kHz. This would be very helpful. Currently, the graph only goes up to 16kHz.

Wonderful app for eqing sound systems, wringing out microphones and monitors. The $1 to remove ads is fair and worth it— the ads take up way too much space, and a buck is cheap for this type of software.

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Usually RTA Lite iOS app used & searched for

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