Spectrum Analyzer

Raspberrywood

In-app purchases

About this app

Spectrum Analyze gives you real-time spectrum data from the microphone on your Android device.

Features in Free Version
* No Ads
* 44100 Hz sampling rate
* Max frequencies up to 22050 Hz (1/2 sampling rate)
* 8192 samples per spectrum
* ~5.4 Hz Resolution per point
* Peak Detect of whole spectrum and your local window
* Pinch to Zoom
* Tap to Pause
* Max Hold
* Take Screenshot
* Share on Facebook, Gmail and many more

Features in Premium Version.
* Limited time 99 cent app! Will increase price as more features are added.
* Help out the developer to keep adding more features!
* Beta Log Frequency Scale
* Adjustable sample rate from 8000 Hz to 48000 Hz
* Max frequencies up to 24000 Hz (1/2 sampling rate)
* Adjustable Size of FFT up to 100000 samples
* Not limited on Power of 2 sized FFTs (Must be even though)
* Autoscale
* Adjustable Manual Scale

If you purchase the app and don't like it contact me for a refund.

Contact on Reddit: Raspberrywood

Ratings and reviews

I've used it lots, it's simple, functional, and easy to use. So for example to quickly identify and notch out some feedback at band practice. I paid the 99c to upgrade even though the free version is useful enough.

Quite good but needs to have a delay, on peak detection. If you have keyboard sounds on or any noise, going on at reset, this picks that noise up, thus making the peak store useless. A delay before a reading is taken, would be better

Don't pay for this app like I did, it's definitely not worth it compared to other free apps like "Audizr". IMO it desperately needs a basic Db meter in the top corner that's not using the flipped/negative scale eg 75 db not -25, window function options like hann and flat top, averaging options like expo vs rms and weighing options like a,b,or z weighted. also an overlay of a chosen industry standard frequency response curve would be an awesome unique feature.

What's new

5.03
Fixed save to gallery
Bug Fixes

5.0.2
New Icons

5.0.1
Major GUI updates
Reduced memory footprint
Switched to use standard android icons

4.5.2
Couple more bug fixes
Changed the title layout

4.5.0
Added beta test of log scale for paid people
Bug fixes to a couple crashes
Will retain purchase information if can't check with google servers (no reception)

4.4.2
Minor fix for the in-app purchase