We seek to understand and document all radio transmissions, legal and otherwise, as part of the radio listening hobby. We do not encourage any radio operations contrary to regulations. Always consult with the appropriate authorities if you have questions concerning what is permissable in your locale.

Author Topic: Audio Spectrum Analyzer App for Android  (Read 757 times)

Offline ChrisSmolinski

  • Administrator
  • Marconi Class DXer
  • *****
  • Posts: 21870
    • View Profile
    • Black Cat Systems
Audio Spectrum Analyzer App for Android
« on: July 16, 2017, 2255 UTC »
I've released an Android version of my Audio Spectrum Analyzer app, which you can get from the Google Play store: https://play.google.com/store/apps/details?id=com.blackcatsystems.SpectrumPad



Audio Spectrum Analyzer turns your phone or tablet into an audio spectrum analyzer. Frequencies up to 20 kHz can be displayed, either with a linear or logarithmic frequency axis.

You can control the displayed frequency span, as well as the FFT size, from 1024 to 262144 bins. The larger the FFT size, the longer time between updates, but the higher the frequency resolution.

Logarithmic display is available, and the graph fill mode can be turned on and off.

Up to five frequency markers can also be displayed.

You can select from 8 different windows:
Rectangular
Hanning
Hamming
Tukey
Cosine
Lanczos
Blackman
Blackman Harris

The iPhone/iPad version is available on the iTunes App Store: http://phobos.apple.com/WebObjects/MZStore.woa/wa/viewSoftware?id=373620982&mt=8&at=11lb5X
Chris Smolinski
Westminster, MD
eQSLs appreciated! csmolinski@blackcatsystems.com
NRD 545 / netSDR / AFE822x / AirSpy HF+ / KiwiSDR / 670 ft horizontal loop / 500 ft northeast beverage / 270 ft west-south-west beverage / 300 ft south beverage / 43m / 20m / 10m  dipoles / Crossed Parallel Loop