Spectrogrammer

Spectrum Analyzer

Features

• Runs on Android and Linux
• Frequency analysis
  • 4096 bands FFT
  • configurable
    • decay
    • averaging
• Visualization
  • Spectrogram
  • Waterfall
    • Uses a magma heatmap
    • When hold is active a binary heatmap is used to shows above/below values
  • Linear / Log scales for both axis
  • Hold function to capture refrence levels
    • Save/load/delete/rename for comparing
• High performance, developed entirely in C/C++

Screenshot

Building

# clone with
git clone git@github.com:aguaviva/spectrogrammer.git --recurse-submodules --shallow-submodules
# build kissfft
make kissfft
# build and run the app (connect your cellphone!)
make push run 

Notes/stuff I need help with:

• If app loses focus will crash/lose data
• getting a nice makefile that can compile for linux and windows
• I can't get to build the app and kissfft in on step
• Created a rudimetary lib for imgui to speed up linking, is there a better way?
• App shouldn't refresh as soon as possible, only when needed
• should prob use Cnlohr audio libs :)

credits

• cnlohr for rawdrawandroid
• mborgerding for kissfft