best polling strategy


    May 18 2007 | 9:43 pm
    Hi folks,
    I have an MSP object which perform envelope extraction on its input.
    All the necessary calculations are carried out in the perform loop at
    the sampling rate, however I don't really need the output of my object
    to be at the sampling rate since the envelope of the signal can be
    sampled at a much lower rate by the Max scheduler without any problems.
    To this goal, I have created a clock so that the object can be polled
    at a specified interval.
    Therefore, every time a polling interval goes by, the object performs
    some calculations (a square root in this case) and outputs a value.
    Now my question is:
    would it be best to create a 'start', 'stop' and 'interval' methods to
    make my clock user controllable like many objects do, or could I also
    call my clock_delay function (with an argument of 0) in the perform
    routine just at the end and outside of the perform loop ?
    I am thinking about the latter solution because the value I need to
    output won't be updated until the end of the perform loop anyway.
    Both methods seem to work, however I am not sure if the latter would be
    a good strategy. I am thinking specifically about the case when many
    objects are to be instantiated in a patch. In this case they will all
    concurrently call the clock function, causing calculations to be
    performed at the same time at the end of each audio vector.
    Could that cause potential problems ?
    Thanks for any insight.
    Best.
    - Luigi
    P.S.
    Apologies to John Pitcairn for hijacking threads. It won't happen
    again.
    ------------------------------------------------------------
    THIS E-MAIL MESSAGE IS FOR THE SOLE USE OF THE INTENDED RECIPIENT AND MAY CONTAIN CONFIDENTIAL AND/OR PRIVILEGED INFORMATION. ANY UNAUTHORIZED REVIEW, USE, DISCLOSURE OR DISTRIBUTION IS PROHIBITED. IF YOU ARE NOT THE INTENDED RECIPIENT, CONTACT THE SENDER BY E-MAIL AT SUPERBIGIO@YAHOO.COM AND DESTROY ALL COPIES OF THE ORIGINAL MESSAGE. WITHOUT PREJUDICE UCC1-207.
    ------------------------------------------------------------
    ____________________________________________________________________________________Looking for a deal? Find great prices on flights and hotels with Yahoo! FareChase.