inspectrum

inspectrum is a tool for analysing captured signals, primarily from software-defined radio receivers.

Status

Currently very early and rough, but usable.

Try it

Building on Debian-based distros

sudo apt-get install libwxgtk3.0-dev libfftw3-dev
git clone https://github.com/miek/inspectrum.git
cd inspectrum
make

Run

Currently inspectrum can only read files with interleaved (complex) 32-bit floats, such as those produced by GNURadio or osmocom_fft.

./inspectrum <path-to-cfile>

Features

• Spectrogram with zoom/pan
• Large (multi-gigabyte) file support

Goals

• Be fast and light
• Make as many settings as possible work in realtime. I want this to be a useful tool for visually learning about DSP by tweaking around with things like FFT settings, filter widths or clock synchronisation.
• Support large files - as large as possible, but at least several GBs.
• Future features: filtering, demodulation, clock sync. Probably based on GNURadio.

Author

• Mike Walters - miek on freenode IRC (preferred) - mike@flomp.net