Forums > MaxMSP

filtergraph~ + cascade~ = clicks ?

December 28, 2011 | 9:10 pm

Hello,
I am experiencing clicks when changing the data of a filtergraph~ plugged to a cascade~ controlling audio in real time. Same situation as in the helpfile of cascade~ with ADC as Source.
Was working great with Max5…
Do you have the same ?
Thanks for your help.

Max 6.0.2
Mac OS X 10.7.2
Device = MOTU UltraLite
I/O Vector size = 128
Signal Vector size = 128
Overdrive, Interrupt, Vector Optimization = yes
Parallel processing = no
Mixer crossfade = auto


December 29, 2011 | 7:24 am

This might be helpful.
http://music.arts.uci.edu/dobrian/IAP2010/examples.htm#Ex21


December 29, 2011 | 2:50 pm

Thanks Christopher, this is helpful but the weird thing is that it’s working without any filtercoeff~ or line~ with MaxMSP 5.1.9
I just opened cascade~ helpfile in MaxMSP and Max6 and they don’t behave the same way.
With the same audio settings, changing filtergraph~ in the following patch is very smooth with MaxMSP 5 and heavily clicks with Max6…

– Pasted Max Patch, click to expand. –

Is it because of the multiple DSP chains ?
If I could avoid to add line~ everywhere that could save me several hours of work…


January 24, 2012 | 3:29 pm

I have a similar problem of clicks since Max6, but in my case, the problem comes from CASCADE~ and neither from filtergraph nor any coeff changing .

Each time the coeffs are sent to CASCADE~, it creates a click, even if the coeff are the same than previous, as in the enclosed patch : you’ll hear and see it at every bang sent every 500ms.

– Pasted Max Patch, click to expand. –


pid
January 24, 2012 | 8:54 pm

indeed, it is [cascade~], and it is a bug known by the developers afaik. happens with [filterdesign] dynamic updates too. sadly we just have to wait. no workaround.


October 10, 2012 | 5:24 am

just wanted to say the Max 6.0.7 update solved this issue -on my side at least


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