up~ [This has no effect in MSP which does not yet support multiple sampling rates.] Up~ outputs a signal which has been upsampled to twice the incoming signal's sampling rate using a 4-point interpolation.	from the library : ISPW Compatibility Library Format : External Environment : max / msp freeware Max 3.x / 4.x http://forumnet.ircam.fr//rubrique.php3?id_rubrique=65