Dual Channel FFT is a free metering plugin developed by Christian Budde. Compatible OS(s): Windows.
Dual Channel FFT is a program that analyses the spectral difference between two measurement points. This can be useful to measure the electro- and acoustical chain during a live performance.
Additionally the program can visualize the processing of VST Plug-ins, export the frequency response to TXT/BMP and export the impulse response to WAV.
Dual Channel FFT is free for non-commercial use.
http://www.pcjv.de/