peq1~ parametric EQ This parametric EQ element provides symmetrical boost/cut for a first-order high and low shelf. It uses the coef_hlshelf2~ coefficient generator, but does not provide gain control for the mid-range by-product shelf. The two shelves may be attenuated or boosted between -30 dB and +30 dB. The cutoff frequencies are automatically constrained, so that the low cutoff is not higher than the high cutoff. The constrained frequencies are output for display convenience.

from the library : Jimmies Format : Abstraction Environment : max / msp commercial Max 3.x / 4.x http://forumnet.ircam.fr//rubrique.php3?id_rubrique=65