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

Currently very early and rough, but usable.

sudo apt-get install qt5-default
git clone https://github.com/miek/inspectrum.git
cd inspectrum
qmake
make

./inspectrum

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

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

• 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.

• #inspectrum on freenode IRC