Mike Anderson wrote: > pfarrell Wrote: >>One warning, any EQ that mortals can afford will >>change the phase of the signal at some or many >>frequencies. > > What would this sound like?
Depends a huge amount on what frequencies are effected and by how much. Phase is time. Phase is how we humans tell direction of sounds. The good news is that for this application, killing standing waves, etc. the majority of the sounds in question are low frequency, typically 50Hz or lower. And for the most part, since the wave lengths are 20 or more feet, phase is irrelevant. Which is why true low frequencies are not directional. At the worst case, playing with phase is what all the 70s stoner rock and roll (Moody Blues, ELP, etc.) played with. They would zoom sounds around your head with phase. This totally destroys 'imaging' and proper placement of instruments in a sound stage. At a lesser level, it can kill the spacial image that you have of the music, destroy the illusion that there are real instruments in real space before you. Phase games are how small speakers or two speakers throw the illusion of surround sound. It is most of what the 'hall modes' of most AV receivers do. -- Pat http://www.pfarrell.com/music/slimserver/slimsoftware.html _______________________________________________ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/lists/listinfo/audiophiles
