Cycling 74 » Topic: continued granulator woes…… http://cycling74.com/forums/topic/continued-granulator-woes/feed Wed, 19 Jun 2013 04:59:42 +0000 http://bbpress.org/?v=2.2.4 http://cycling74.com/forums/topic/continued-granulator-woes/#post-54540 <![CDATA[continued granulator woes……]]> http://cycling74.com/forums/topic/continued-granulator-woes/#post-54540 Sat, 22 Jan 2011 22:12:19 +0000 n00b_meister Hallo, dear reader

I am tantalizingly close to comleting my dream phasor/play-based granulator, stretcher, pitch-shifter thang. The main engine has two play~s and two phasor~s, with one shifted 180deg out of phase with the other, to give me some added smoothness in the windowing. So far so what?. Should I expect my two phasor~s to run out of sync with each other, especially as the grainSize and pitch is dynamically variable? And if so, is there a solution? Here’s a simple annotated patch demonstrating the problem.

ps…this granulator will be the death of me.
pps… other granulators just don’t do, erm, exactly what i need.

– Pasted Max Patch, click to expand. –

ta
Brendan

]]> http://cycling74.com/forums/topic/continued-granulator-woes/#post-196429 <![CDATA[Re: continued granulator woes……]]> http://cycling74.com/forums/topic/continued-granulator-woes/#post-196429 Sat, 22 Jan 2011 22:19:03 +0000 n00b_meister fekkit
I’m just gonna use the rgrano.maxpat from the examples folder………..boohoo

]]> http://cycling74.com/forums/topic/continued-granulator-woes/#post-196430 <![CDATA[Re: continued granulator woes……]]> http://cycling74.com/forums/topic/continued-granulator-woes/#post-196430 Sat, 22 Jan 2011 23:19:55 +0000 Tim Lloyd Here’s a way of sorting it :)

Use delta~ to signal the end/start of the first phasor~ ramp, and use it to reset the phase of the second phasor at signal rate before shifting it by 180degrees……hard-synced grainage at your disposal!

– Pasted Max Patch, click to expand. –
]]> http://cycling74.com/forums/topic/continued-granulator-woes/#post-196431 <![CDATA[Re: continued granulator woes……]]> http://cycling74.com/forums/topic/continued-granulator-woes/#post-196431 Sat, 22 Jan 2011 23:48:12 +0000 n00b_meister Tim Lloyd = Problems Solved

of course, use one phasor to reset the other!!

Thanks man

(I’m sure you recognize some of your own work elsewhere in my patch)

Best regards
Brendan

]]> http://cycling74.com/forums/topic/continued-granulator-woes/#post-196432 <![CDATA[Re: continued granulator woes……]]> http://cycling74.com/forums/topic/continued-granulator-woes/#post-196432 Sun, 23 Jan 2011 13:51:15 +0000 goodparleyandorfing Do you know of [phasor.shift~] by nathan wolek? It was created exactly for this purpose I do believe..

]]> http://cycling74.com/forums/topic/continued-granulator-woes/#post-196433 <![CDATA[Re: continued granulator woes……]]> http://cycling74.com/forums/topic/continued-granulator-woes/#post-196433 Sun, 23 Jan 2011 13:53:19 +0000 goodparleyandorfing Ah, perhaps not. Should’ve checked the patch first; you want independent frequency control for left and right. As you were!

]]> http://cycling74.com/forums/topic/continued-granulator-woes/#post-196434 <![CDATA[Re: continued granulator woes……]]> http://cycling74.com/forums/topic/continued-granulator-woes/#post-196434 Sun, 23 Jan 2011 14:39:49 +0000 Tim Lloyd Actually [phasor.shift~ ] would work in that patch……the second grain can’t be 180degrees out of phase if it’s running at a different frequency :p

So then it becomes this:

– Pasted Max Patch, click to expand. –

There are some clicks getting through the windowing at small grain sizes…I think it’s due to the inaccuracy of using [sah~ 0.999]…a better way is to use Andrew Benson’s [wait~ ] external in place of it, which will do the same thing only better :) … it’s on the share pages…or toolbox

]]> http://cycling74.com/forums/topic/continued-granulator-woes/#post-196435 <![CDATA[Re: continued granulator woes……]]> http://cycling74.com/forums/topic/continued-granulator-woes/#post-196435 Sun, 23 Jan 2011 16:25:35 +0000 n00b_meister @goodparleyandorfing
I had a quick surf for [phasor.shift] (google, maxobjects etc) and am unable to track it down; any ideas? BTW I’m not looking for independent pitch control over EACH window – pitch/size/offset apply to both. Thanks for your valuable input……
@Tim
yeah, I eventually noticed that there was some clicking, esp at smaller grain sizes, due to your elegant sync solution repeatedly resetting the second phasor.

Another ‘solution’ I worked out is to fix the grain size (80ms/2.), run both windows off one phasor, and use a scalar inside the ‘jitter’ or offset, to read from a variable portion of the buffer.

It’s also astounding how smooth the rgrano.maxpat example sounds, with one window and very little CPU hit (my poly version of my own granulator sits around 40-60%). Hmmm

Thanks again chaps

Brendan

]]> http://cycling74.com/forums/topic/continued-granulator-woes/#post-196436 <![CDATA[Re: continued granulator woes……]]> http://cycling74.com/forums/topic/continued-granulator-woes/#post-196436 Sun, 23 Jan 2011 16:32:20 +0000 n00b_meister ps

phasor.shift found – in the GTK i never unzipped!

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