# inspectrum
inspectrum is a tool for analysing captured signals, primarily from software-defined radio receivers.
![inspectrum screenshot](/screenshot.jpg)
## Try it
### Prerequisites
* cmake >= 2.8.11
* fftw 3.x
* [liquid-dsp](https://github.com/jgaeddert/liquid-dsp) >= v1.3.0
* pkg-config
* qt5
### Build instructions
Build instructions can be found here: https://github.com/miek/inspectrum/wiki/Build
### Run
./inspectrum [filename]
## Input
inspectrum supports the following file types:
* `*.cf32`, `*.cfile` - Complex 32-bit floating point samples (GNURadio, osmocom_fft)
* `*.cs16` - Complex 16-bit signed integer samples (BladeRF)
* `*.cs8` - Complex 8-bit signed integer samples (HackRF)
* `*.cu8` - Complex 8-bit unsigned integer samples (RTL-SDR)
* `*.f32` - Real 32-bit floating point samples
* `*.s16` - Real 16-bit signed integer samples
* `*.s8` - Real 8-bit signed integer samples
* `*.u8` - Real 8-bit unsigned integer samples
If an unknown file extension is loaded, inspectrum will default to `*.cf32`.
## Features
* Large (100GB+) file support
* Spectrogram with zoom/pan
* Plots of amplitude, frequency, phase and IQ samples
* Cursors for measuring period, symbol rate and extracting symbols
* Export of selected time period, filtered samples and demodulated data
## Contact
* #inspectrum on freenode IRC