The alteration of the frequency response of signals that will be sent to speakers or monitors, done in order to compensate for room modes. These problems are generally identified by sending pink noise to the speakers, then adjusting the frequency response of the resulting sound that arrives at the listening position. Most room EQ references use 1/3-octave 31-band graphic equalizer, with additional over-all bass and treble adjustments. See also RTA. Also called voicing.