rms1~ measures the average amplitude of a signal rms1~ is a measure of the average amplitude of a signal using the RMS (root-meansquare) method. Although MSP already has an amplitude level peak meter (meter~) it is not as useful for amplitude or envelope following as rms1~.	from the library : Jimmies Format : Abstraction Environment : max / msp commercial Max 3.x / 4.x http://forumnet.ircam.fr//rubrique.php3?id_rubrique=65