Flexible visuals with multiple scopes and customizable color/display options
No explicit real-time RTA, octave analysis, or calibration workflow listed
Only device microphone input is documented; external mic support is not specified
Not ranked in any top lists
About mr spectra
mr spectra is a music & audio app developed by Sumanta Raha.
How many times has mr spectra been downloaded?
mr spectra has been downloaded 14 thousand times. In the last 30 days, the app was downloaded 16 times.
What is the rating of mr spectra?
mr spectra is rated 4.37 out of 5 stars, based on 84 ratings.
Is mr spectra free?
mr spectra is free to download. The last update was on July 26, 2025.
What are the requirements for mr spectra?
mr spectra requires Android 6.0+ or higher. The app has a content rating of Everyone. The app has been available on Google Play August 2020.
Description
mr spectra is an fft based audio spectrum analyzer with strobe lights and built-in weighting filters (A-weighting for human hearing, C-weighting for machine sounds and Z-weighting with no filter).
Enjoy mr spectra with your music as a musical mood light.
Quick tips: * Show or hide the dB and Max dB values. * Go to settings and add the Strobe Lights, or a decibel, wave, or spectrogram scope.
Display Settings: * Select color schemes. * Solid bars or line graphs.
Strobe Lights Settings: * 3 lights (Bass, Mid, Treble) or 4 lights (Bass, Mid, Treble, High Treble). * Full screen mode.
Decibel Settings: * Use A-Weighting, C-Weighting or Z-Weighting filters (dBA, dBC, dBZ). * Show decibel and Max dB values. * Set zero dB level.
FFT Options: * Use Hann or rectangular windowing.
Technical Details: * Input source: device mic. * Sound captured: 16-bit PCM mono. * Sampling rate: 44.1 kHz. * Audio amplitude range: 1 to 32767. * FFT latency: 23 milli seceonds. * Decibel calculations: based on rms amplitude, relative to a base level of 1 rms. The base level can be adjusted by user to calibrate dB levels.
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I really like this app. It's especially fun to watch the app while playing music on my phone. I do have to say this app is very accurate with the dB reading. I work at the airport and fueling an Airbus 320 with the airpacs running is at 82dB. My BAFX Decibel meter/Sound pressure wave meter reads the same as this app on my Samsung S10e Android 11. I personally wish I could see a widget or live screen saver if that makes any sense. I love the colors. I want to write more, but I'm at my limit.
★★★★★Silvy· Jul 21, 2026
I can play spectra by chipzel on this app called spectra, and it works with YouTube
★★★★★Khaled Akbar· Feb 26, 2023
I hope devs will install options for audio internal output not only mic output coz dog barkin and cock crowing will enter the simulation process thank you for the app devs
★★★★★Khaled Akbar· Aug 21, 2021
Awesome visualizer it brightens my life Thank you for the response I just forgot to look at the Settings recently 😮🧡🧡🧡 may I suggest the scopes must be color white or gray and has switched for mic or audio internal and background pick up gallery thanks
★★☆☆☆Robin Sparrow· Apr 27, 2022
Limited frequency range: only goes up to 4000Hz, and you can't adjust it. Frequency range is also locked to a linear scale when it always makes more sense to display frequency logarithmically.
★☆☆☆☆Robert Struzinski· Aug 3, 2025
What good is an audio spectrum app that goes only to 4kHz? Try SOUND ANALYZER APP, it's the only free audio test app that works correctly, you'll need to use an external test tone, but they're free in other apps.
Google Play Rankings for mr spectra
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Technologies used by mr spectra
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