New to Max/MSP/Jitter...weird Powerbook problem


    Dec 29 2005 | 7:58 am
    Hello I just purchased and authorized Max/MSP/Jitter and I'm having a strange thing happening with my G4 867 titanium Powerbook when Max/MSP is running. There is a steady, high, sawtooth-like pitch (a "B" two octaves above middle "C" in fact) that comes from under the QWERTY keyboard. It seems loudest under the "L", "O" and "P" keys on the right. It does this only when Max is open even if there is no patch loaded and stops the instant that I quit Max. The sound happens constantly whether or not there are other open programs and whether or not Max is the forward program. The sound will stop briefly when opening other programs or when switching between other open programs. I have run Reaktor, Supercollider and Pro Tools among other audio programs on this machine without anything like this happening. This also happens regardless of wether the audio is muted or not; or wether or not there is a mini-plug plugged in the headphone jack which is how I run audio to a mixer most of the time. Interestingly though, the sound can be heard through the headphone jack when the mini-plug is inserted only about halfway in the jack. I don't know what it is (some weird software induced ground loop? Max/MSP hates the kind of RAM I have?), but it's pretty darn annoying. Any help or suggestions would be greatly appreciated. Thank you very much. -B

    • Dec 29 2005 | 9:48 am
      On around Dec 29, 2005, at 8:58, Briggan Krauss said something like: > Hello I just purchased and authorized Max/MSP/Jitter and I'm having a > strange thing happening with my G4 867 titanium Powerbook
      There were several threads about this when the Titania first came out. I never owned one so I never had the problem. Suggest you try Googling the list archive, something like
      titanium buzz site:synthesisters.com or tibook pitch site:synthesisters.com
      or variations on the above (you can also build combinations with the OR keyword in Google).
      I seem to recall this was eventually traced to some obscure hardware peculiarity, and is not consistent across all models.
      Hope this helps, Peter
      > -------------- http://www.bek.no/~pcastine/Litter/ -------------- Peter Castine | ^ | Litter Power & Litter Bundle for Jitter pcastine@gmx.net | pcastine@bek.no | realiTV : http://www.bek.no/~pcastine/Press/ 4-15@kagi.com | | http://www.radio-copernicus.de | +- Overnight | Sensation
    • Dec 29 2005 | 10:11 am
      hi
      yes, i had it on a titanium, and have it on a 1.5 G4 Pbook
      it's not that loud, but it's there....
      well, at least you know than MAX is running!!!
      best
      kasper
      -- Kasper T. Toeplitz noise, composition, bass, computer http://www.sleazeArt.com
    • Dec 29 2005 | 11:24 pm
      On around Dec 29, 2005, at 8:58, Briggan Krauss said something like: > Hello I just purchased and authorized Max/MSP/Jitter and I'm having > a strange thing happening with my G4 867 titanium Powerbook >
      You can use this application to tune the noise to whatever pitch you like:
      Hope that helps. :-)
      mzed
      || michael f. zbyszynski, ph.d. -- music composition research || mzed@cnmat.berkeley.edu -- +1.510.643.9990x314 || http://homepage.mac.com/mikezed/
    • Dec 30 2005 | 7:11 am
      On Dec 29, 2005, at 2:58 AM, Briggan Krauss wrote:
      > Hello I just purchased and authorized Max/MSP/Jitter and I'm having > a strange thing happening with my G4 867 titanium Powerbook > when Max/MSP is running. There is a steady, high, sawtooth-like > pitch (a "B" two octaves above middle "C" in fact) > that comes from under the QWERTY keyboard. It seems loudest under > the "L", "O" and "P" keys on the right. > It does this only when Max is open even if there is no patch loaded > and stops the instant that I quit Max.
      The sound you're experiencing is perfectly normal for some Apple laptops. This is due to a hardware oscillation created by the Max scheduler. Other things can cause this as well (Quicktime movie previews in the Finder when in column view do it for me).
      One solution is to adjust the Schedule Event Interval to a slower setting in "Options -> Performance Options...". A faster setting gives a higher pitch, and a slower setting gives a lower one. If it is slower than 15ms it is close to inaudible. This may have an adverse effect on your patches though, so I'd not suggest it.
      The other solution is to change your system performance in Energy Saver from "Highest" (which given your symptoms, I'm sure it is set to) to "Automatic".
      Hope it helps.
      - John
    • Dec 30 2005 | 7:15 am
      The SystemLoad application icon makes me crack up. looney tunes and all that.
      ohh..boy is it late.
      v a d e //
      www.vade.info abstrakt.vade.info
    • Dec 30 2005 | 12:28 pm
      Normal but very annoying. Another way to turn off the buzz is to install Apple's "Processor" preference panel (it's in the developer toolkit, but I think there is a smaller download available which includes it too) and turn off the "nap" setting. The drawback is that the temperature of your processor will increase...
      p
    • Jan 01 2006 | 1:21 am
      Thank you all for the advice on the weird sound issue. Changing the Schedule Event Interval does change the pitch of the sound but I don't want to mess with this until I know more about what I'm doing with Max. Changing the Energy Saver preferences didn't seem to have any effect though. I tried looking all over the Apple web site for Developer Toolkit and Processor Preference Panel but only found oblique references which seemed to indicate that it may only be available to OS 10.4 Tiger (true?). I'm on OS 10.3.9... Anyway, the important thing I've learned is that it's a harmless sound (though annoying) and doesn't indicate some kind of hardware malfunction so for now I'll just live with it. Thanks again for your help. -B
    • Jan 01 2006 | 5:25 am
      On Dec 31, 2005, at 8:21 PM, Briggan Krauss wrote:
      > Thank you all for the advice on the weird sound issue. > Changing the Schedule Event Interval does change the pitch of the > sound but > I don't want to mess with this until I know more about what I'm > doing with Max. > Changing the Energy Saver preferences didn't seem to have any > effect though. > I tried looking all over the Apple web site for Developer Toolkit > and Processor > Preference Panel but only found oblique references which seemed to > indicate that > it may only be available to OS 10.4 Tiger (true?). I'm on OS > 10.3.9... > Anyway, the important thing I've learned is that it's a harmless > sound (though annoying) > and doesn't indicate some kind of hardware malfunction so for now > I'll just live with it. > Thanks again for your help.
      You may also want to try installing the CHUD tools and disabling processor napping. This also works for me, and allows me to run on the highest performance setting and without any other tweaks. It can make your fans kick on sooner though.
      In short... deal with it. :-) You'll have a new Intellibook soon anyway, right?
      - John
    • Jan 01 2006 | 2:28 pm
      On around Jan 1, 2006, at 2:21, Briggan Krauss said something like: > I tried looking all over the Apple web site for Developer Toolkit and > Processor > Preference Panel but only found oblique references which seemed to > indicate that > it may only be available to OS 10.4 Tiger (true?).
      The Toolkit has been available yonks (there have been developer tools for every Mac since 1984), but it may be difficult (even bordering on impossible) to find past versions. FWIW, I have the Processor Pref panel installed on my 10.3.9 machine.
      FWIW -- P. -------------- http://www.bek.no/~pcastine/Litter/ -------------- Peter Castine | ^ | Litter Power & Litter Bundle for Jitter pcastine@gmx.net | pcastine@bek.no | realiTV : http://www.bek.no/~pcastine/Press/ 4-15@kagi.com | | http://www.radio-copernicus.de | +- Overnight | Sensation
    • Jan 01 2006 | 3:45 pm
      On Jan 1, 2006, at 9:28 AM, Peter Castine wrote:
      > On around Jan 1, 2006, at 2:21, Briggan Krauss said something like: >> I tried looking all over the Apple web site for Developer Toolkit >> and Processor >> Preference Panel but only found oblique references which seemed to >> indicate that >> it may only be available to OS 10.4 Tiger (true?). > > The Toolkit has been available yonks (there have been developer > tools for every Mac since 1984), but it may be difficult (even > bordering on impossible) to find past versions. FWIW, I have the > Processor Pref panel installed on my 10.3.9 machine.
      Definitely included in Panther -- Not sure about Jaguar. It shows up when you install the CHUD tools off the Panther developer CD, or off the Tiger DVD. For what it is worth, Apple recommends against disabling napping using this anyway for any length of time.
      - John
    • Jan 09 2006 | 6:00 am
      I know I'm a bit late on this thread, but here is a patch that was posted on the list a while back that lets you alter the sound of the buzz. The last setting in the umenu makes the buzz pretty much totally gone on my 1ghz powerbook.
      Unfortunately I can't remember the original author of the patch.