Forums > MaxMSP

New to Max/MSP/Jitter…weird Powerbook problem

December 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


December 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 < --- Radioph
| +- Overnight
| Sensation


December 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


December 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:

http://www.bresink.de/osx/SystemLoad.html

Hope that helps. :-)

mzed

|| michael f. zbyszynski, ph.d. — music composition research
|| mzed@cnmat.berkeley.edu — +1.510.643.9990×314
|| http://homepage.mac.com/mikezed/


December 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


December 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 //

http://www.vade.info
abstrakt.vade.info


December 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


January 1, 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

Briggan Krauss

http://www.briggankrauss.com


January 1, 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


January 1, 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 < --- Radioph
| +- Overnight
| Sensation


January 1, 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


January 9, 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.

#P window setfont "Sans Serif" 9.;
#P window linecount 1;
#P newex 9 40 45 196617 loadbang;
#P newex 8 110 27 196617 t b l;
#N coll ;
#T flags 1 0;
#T 0 2 1 2;
#T 1 0 1 2;
#T 2 2 7 8;
#T 3 2 1 1;
#T 4 2 23 32;
#P newobj 8 89 53 196617 coll;
#P user umenu 8 68 130 196647 1 64 84 1;
#X add default settings;
#X add buzz off (but high cpu);
#X add pretty quiet;
#X add pretty noisy;
#X add almost gone?;
#P newex 25 133 65 196617 unpack 0 0 0;
#P button 8 218 15 0;
#P newex 9 346 95 196617 print eventinterval;
#P newex 9 326 74 196617 receive evinfo;
#P newex 9 304 70 196617 print interval;
#P newex 9 284 85 196617 receive interinfo;
#P newex 9 263 71 196617 print setsleep;
#P window linecount 2;
#P message 106 326 135 196617 ; max geteventinterval evinfo;
#P message 106 284 129 196617 ; max sendinterval interinfo;
#P message 105 243 111 196617 ; max getsleep sleepinfo;
#P window linecount 1;
#P newex 9 243 85 196617 receive sleepinfo;
#P number 210 163 35 9 0 100 3 3 0 0 0 221 221 221 222 222 222 0 0 0;
#P comment 247 163 47 196617 default 2;
#P window linecount 2;
#P message 210 184 128 196617 ; max seteventinterval $1;
#P number 118 163 35 9 1 30 67 3 0 0 0 221 221 221 222 222 222 0 0 0;
#P message 118 184 89 196617 ; max interval $1;
#P number 25 163 35 9 0 100 67 3 0 0 0 221 221 221 222 222 222 0 0 0;
#P message 25 184 90 196617 ; max setsleep $1;
#P window linecount 1;
#P comment 62 163 47 196617 default 2;
#P comment 155 163 48 196617 default 1;
#P window setfont "Sans Serif" 12.;
#P comment 8 25 233 196620 now , what affects the buzz in xmax?;
#B color 13;
#P window setfont "Sans Serif" 9.;
#P comment 25 219 141 196617 what are the current values?;
#P comment 65 90 100 196617 stored combinations;
#P connect 11 0 9 0;
#P fasten 22 2 11 0 84 157 215 157;
#P connect 8 0 7 0;
#P fasten 22 1 8 0 57 157 123 157;
#P fasten 21 0 15 0 13 238 100 238 100 322 111 322;
#P fasten 21 0 14 0 13 238 100 238 100 280 111 280;
#P fasten 21 0 13 0 13 238 110 238;
#P connect 6 0 5 0;
#P connect 22 0 6 0;
#P connect 25 1 22 0;
#P connect 19 0 20 0;
#P connect 17 0 18 0;
#P connect 12 0 16 0;
#P connect 25 0 21 0;
#P connect 24 0 25 0;
#P connect 23 0 24 0;
#P window clipboard copycount 27;


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