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36d5a83567
When drawComplexControl draws SC_SliderGroove, it draws the groove and then highlights an area from minimum() to the current value. Previously this code was setting the position/value to 0 to avoid drawing the highlight, but since we're setting minimum() to below zero it was drawing from -100 to 0 and looking odd. This fix sets the position to minimum() to avoid that. There is one leftover issue where a small dot is drawn on the far left under the Gtk+ style, but I can't see an easy way to fix that.
inspectrum
inspectrum is a tool for analysing captured signals, primarily from software-defined radio receivers.
Try it
Prerequisites
- qt5
- fftw 3.x
- cmake
- pkg-config
Building on Debian-based distros
sudo apt-get install qt5-default libfftw3-dev cmake pkg-config
mkdir build
cd build
cmake ..
make
sudo make install
Building on OSX
brew install qt5 fftw cmake pkg-config
mkdir build
cd build
CMAKE_PREFIX_PATH=$(brew --prefix qt5)/lib/cmake cmake ..
make install
Run
./inspectrum
Currently inspectrum can only read files with interleaved (complex) 32-bit floats, such as those produced by GNURadio or osmocom_fft.
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.
Contact
- #inspectrum on freenode IRC