Signal Analyzer

Download for Linux (.tar.gz) Download for Windows (.zip)

Presentation

Signal Analyzer is a desktop application allowing to quickly visualize the spectrogram of I/Q recordings. It is still in work-in-progress phase.

The amplitude of I and Q channels are also displayed below the spectrogram, sharing the same time range.

The SigMF files used in the previous screenshot come from Daniel Estévez's Github. A related blog post is available on his website.

Note: the application expects the two .sigmf-meta and .sigmf-data files to be located in the same directory, with the same name before the extension. Example: recording.sigmf-meta and recording.sigmf-data. Open the .sigmf-meta file, the application will load the parameters, then load the .sigmf-data.

Binary files containing pairs of I/Q samples (I0, Q0, I1, Q1, ...) can also be loaded using following method:

• Set File format to Binary
• Fill Binary format to specify how the I/Q pairs are coded, using SigMF datatype syntax. For instance, cf32_le is used when both I and Q amplitudes use little-endian float32 type. It is equivalent to Rohde & Schwarz .iqw file format.
• Manually specify the Sample rate
• Then click on Open to open the binary file

Release notes

Version 0.1.3

• Add power over time view
• Add option to hide power and amplitude views

Version 0.1.2

• Automatically infer binary format for .iqw files (sample rate has to be specified before)
• Minor changes in UI

Version 0.1.1

First released version, for both Linux and Windows.

• Spectrogram and amplitude views
• Supported formats: SigMF, WAV, binary

Downloads

Linux (.tar.gz)
Windows (.zip)