• Audio Spectrum Analyzer 1
  • Audio Spectrum Analyzer 2
  • Audio Spectrum Analyzer 3
  • Audio Spectrum Analyzer 4

Audio Spectrum Analyzer

Designed with accuracy and easy of use in mind. May be used for measuring environmental noise; help tuning instruments; timing short sound events; and educational purpose.
Features:
* No Ads.
* Can use any supported sample rate and recorder source of your device.
* Graph with nice grid lines and labels.
* FFT sample size range from 512 to 8192. Using half-overlapped time window to increase time resolution.
* Optional window functions of different frequency domain resolution and dynamical range.
* Show peak frequency (in unit of Hz and note+cent), in a moderate accuracy (FFT + interpolation).
* Pinch to zoom, drag or swipe to move, long-press drag to place cursor, double touch to zoom to origin.
* Show dB or A-weighting dB (dBA).
* Screen keeps on (optional).
* Can record the audio in wav (PCM) format.

Notes:*
* May need some knowledge of discrete Fourier transform and spectrum analysis to use it well.*
* The actual accuracy mainly depends on your device. No calibration interface provided.

Comments and suggestions are welcome.

Category : Music & Audio

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Reviews (26)

Ami. M. S. Apr 5, 2019     

This is the best spectrum analyzer I've tried on Android. The only caveat is the lack of peak hold. Could you please add an option for that?

Ran. S. Dec 1, 2019     

Not sure if it's the microphone but the app doesn't work. I try to make sounds and the graph only picks up noise

Tre. L. Dec 18, 2021     

Stupid, I'm trying to find a spectrogram app that plays audio files and I can't find one, please add that to the application

Rob. S. Oct 4, 2021     

Couldnt do anything with this, showed all kinds of sounds on the graph while I was in a silent room trying to get the white noise to play out Bluetooth?

A. G. u. Mar 20, 2019     

It's the best one, there are a few apps put there that make you pay for basic features that this app has for free, 10/10 would bang

Tay. T. Jul 27, 2020     

This is the ONLY spectrogram app that can accomdate my voice training, at least on the play store. Well done imo

Con. F. Aug 13, 2021     

It keeps bugging out idk y it keeps switching the default lowest frequency to 98

Cyr. G. Mar 7, 2020     

I like the spectrogram feature. Better than other apps I've tried.

Joa. P. Jun 12, 2021     

Wish It Had A Feacher To Import Mp3/Mp4 Files. Because The Only App That Has This Feacher Has Bad Reveiws. Alltough This Is A Great App! (Sorry For My Bad Spelling)

Mik. N. Feb 18, 2021     

Excellent app. Does exactly what it promises and does it well.

bil. P. May 26, 2020     

Excellent software, i use it in my dield of science everyday

Bjö. Jan 2, 2021     

The best spectrum analyzer I've tried out of many!

SBB. Dec 11, 2020     

I could not open files and analyse them.

Bul. T. May 11, 2022     

it's accurate..

P. P. Jan 1, 2021     

Try cave sounds from mine craft sound14 and u will see creeper in the spectrum scary

Mil. Jul 16, 2021     

I need a option for files.

Hel. Oct 26, 2018     

No one rated 3 stars

Rog. W. Mar 29, 2021     

More than I orgenel expected.

Tro. M. May 7, 2018     

Absolutely the best sound analyzer tool I've ever found on a cell phone.

Mar. R. Apr 26, 2017     

Great app. Use it for analyzing sounds and signal generators, even from external devices with TRRS cable.

Dal. D. Jun 5, 2017     

Excellent app. Much more flexible than any comparable tool and free!

A. G. u. Jul 24, 2017     

Incredible features, functionality and UI polish - and it's free!!

Gab. M. Jul 1, 2017     

Thank you for doing a good tool. :-)

Nic. H. Apr 17, 2017     

Using it to view emf with microphone antenna. Works great!

Mik. R. Oct 11, 2015     

This app looks good. Hoping to localise the roadnoise of my noisy Alfa sportiva then dampen. Well done with the 170bhp and handling but give my ears a rest. My 156ts was better.

Daw. H. Apr 7, 2016     

Measures the frequencies