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AudioUtil AudioUtil AudioUtil AudioUtil
AudioUtil by Sound-Base Audio is a Mobile Audio App and a Software Application for Android. It functions as a Standalone Application.
Android 4.2 (Jelly Bean) or greater
Stand-Alone Utility / Application
Copy Protection
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KVR Rank

Overall: 9148   75

30-Day: 8123; 7-Day: 5412; Yesterday: 7263

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.

Try the free version: https://play.google.com/store/apps/details?id=org.sbaudio.audiotoolsfree

Utilities included in this app:


  • View sound waves in the time domain.
  • Adjustable frame size.
  • Amplitude measurement by dragging on the screen.

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.


  • 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.

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.

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