Hi! I have wrote this app for own audio-DIY use. Probably, somebody else will find the app useful too. I'll be happy in such case :-) Source: http://gaydenko.com/qloud/qloud-0.1.tar.bz2 Screenshot (180KB): http://gaydenko.com/qloud/shot01.png ===== README ====== QLoud is a tool to measure a loudspeaker frequency response. Writing this app is inspired by excellent applications written by Fons Adriaensen: http://users.skynet.be/solaris/linuxaudio/ Theoretical background belongs to Angelo Farina: http://pcfarina.eng.unipr.it/ In particular, this method was used: http://pcfarina.eng.unipr.it/Public/Papers/134-AES00.PDF Few hints: - move mouse above "?" sign at plot window and wait, - to delete measurement, use context menu on mesurements table, - to see what the app do, just connect app's JACK ports and try, - to see what your sound card do, use loopback for line in/out, - using "very smooth" fractional octave smoothing is hungry for CPU. So be patient when select more rather 1/3 octave smoothing (1/3 octave and less smoothing is rather interactive). Feedback: Please, add "QLoud" to your message subject. My email is: a(a)gaydenko.com ===== INSTALL ===== Requirements: - QT4 ( http://trolltech.com/ ), I use 4.1.4 version, - Qwt ( http://qwt.sourceforge.net/ ) from current CVS tree (probably, last official CVS qwt5 snapshot will work too), - JACK ( http://jackaudio.org/ ), - sndfile ( http://www.mega-nerd.com/libsndfile/ ), - fftw ( http://www.fftw.org/ ). Installation: - look in src/src.pro to modify include dirs if you want, - run qmake make 'qloud' excecutable will be in 'bin' directory.