• AudioUtil Spectrum Analyzer 1
  • AudioUtil Spectrum Analyzer 2
  • AudioUtil Spectrum Analyzer 3
  • AudioUtil Spectrum Analyzer 4

AudioUtil Spectrum Analyzer

AudioUtil Spectrum Analyzer captures audio signals and analyzes them right on your phone in real-time. Screenshots of the display can easily be taken through the utility's context menu. Freeze the display by touching the screen, and drag to show a value readout. Adjust multiple parameters for each utility, like frame size, zero padding, window type, range, and themes to name a few. This app can be used with a 3.5mm 4-pole (TRRS) external microphone (non-USB), if supported by phone.
Utility Descriptions:

Oscilloscope:• View sound waves in the time domain.• Adjustable frame size.• Amplitude measurement by dragging on the screen.• Set trigger level to freeze display if audio exceeds amplitude threshold.

Decibel Meter:• Max-peak or RMS amplitude readings in dBFS.• View as a solid bar or multi-step graph.• Peak tracking with variable time falloff.

FFT Graph:• Linear and logged frequency axis.• Six window types.• Peak tracking with frequency and amplitude readout.• Rendering filter for high-accuracy readings on stable signals.

Spectrogram:• Definable frequency limits to zoom in on desired frequencies.• Adjustable zoom/scroll speed.• Four themes/color maps.

Frequency Spectrum:• View a FFT analysis as a color spectrum.• Linear and logged frequency axis.• Four themes/color maps.

A note on required permissions: This app requests minimal permissions to record audio and to write to storage. These are required in order to successfully capture sound and save screenshots to the device.

Category : Tools

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Reviews (7)

Chr. R. Dec 31, 2018     

Seems to work, but not offline. I live and work frequently in areas where I don't have data coverage, so I need apps on my phone to work at some level without internet access. The moment I lose connectivity to the internet, this app starts complaining about not finding a valid license, and refuses to work. This is just not a good design. Of course some apps are dependent on internet communication, but not one like this, and definitely not for that kind of purpose.

set. w. Sep 30, 2019     

So close but not there. I just need a spectrograph like this but with the spacing of the frequencys similar to a 31 bang eq.

Mwa. K. Sep 28, 2017     

Overall ok, but maybe reconsider the icon for the app👆

A. G. u. Jul 8, 2017     

Overall, I cannot use this app because... O-scope: Freeze trigger is great. Lines too thin/dim and numbers too small/dim. No time divisions on graph. SPL meter: Layout idea is great. No calibration adjustment. Lines too thin/dim and numbers too small/dim. Peak label number does not show when "long" hold is selected. Freeze trigger would be great here also, as alert that a specific SPL was exceeded. FFT analyzer: Automatic peak crosshair is good. No peak hold. No adjustments for sample rate, which is more important than bin count. (You can do just about anything with 4096 bins and the sample rate of your choice.) Lines too dim and axis labels too small/dim. Spectrogram: Okay. Spectrum: Cool idea!

A. G. u. Feb 10, 2017     

Very handy App. Its clear, responsive, and all the tools work just how you would expect. Lots of respect to the developers.

Mar. H. Apr 18, 2017     

Brilliant App with many features, perfect and just what I was looking for.

A. G. u. Jan 22, 2017     

Works good..Lots of features