Cycling 74 » Topic: Help aligning waveform peaks http://cycling74.com/forums/topic/help-aligning-waveform-peaks/feed Tue, 18 Jun 2013 17:48:07 +0000 http://bbpress.org/?v=2.2.4 http://cycling74.com/forums/topic/help-aligning-waveform-peaks/#post-62928 <![CDATA[Help aligning waveform peaks]]> http://cycling74.com/forums/topic/help-aligning-waveform-peaks/#post-62928 Thu, 12 Apr 2012 18:31:07 +0000 DJF I have both a triangle and sine waveform whose peaks I would like to align. At the moment the waveform cycles are synchronised, however, the sine trough occurs during the triangle peak – and I would like both to peak and trope at the same time.

I have generate the sine using the [phasor~ [cos] objects and the triangle using a [phasor~] [triangle 0.5] combination. Could anyone help me find an calculation that allows you to move a waveform by half a cycle. I have included the patch I am working which outlines the two waveforms.

– Pasted Max Patch, click to expand. –
]]> http://cycling74.com/forums/topic/help-aligning-waveform-peaks/#post-227148 <![CDATA[Re: Help aligning waveform peaks]]> http://cycling74.com/forums/topic/help-aligning-waveform-peaks/#post-227148 Thu, 12 Apr 2012 19:13:53 +0000 big_pause you just need to set the phase on the left [cos] phasor~ to 0.5.

heres your patch modified to do so

– Pasted Max Patch, click to expand. –
]]> http://cycling74.com/forums/topic/help-aligning-waveform-peaks/#post-227149 <![CDATA[Re: Help aligning waveform peaks]]> http://cycling74.com/forums/topic/help-aligning-waveform-peaks/#post-227149 Thu, 12 Apr 2012 19:25:27 +0000 n00b_meister Hi
the simplest way to phase-shift is to use the phase inlet (R) of your two phasors, which takes a value between 0. and 1. Set one at 0. the other at 0.5 (180deg). Or use one phasor twice, shifting the second ramp via [+~ 0.5]–>[%~ 1]:

– Pasted Max Patch, click to expand. –

Brendan

edit: pipped

]]> http://cycling74.com/forums/topic/help-aligning-waveform-peaks/#post-227150 <![CDATA[Re: Help aligning waveform peaks]]> http://cycling74.com/forums/topic/help-aligning-waveform-peaks/#post-227150 Thu, 12 Apr 2012 19:26:43 +0000 DJF I see what you mean – that it is just a case of inverting the phase of the sine. I did try put pcos~ 0.5] but it did not resolve the issue – the sine trough still occurs during the triangle peak. I am doing this right?

]]> http://cycling74.com/forums/topic/help-aligning-waveform-peaks/#post-227151 <![CDATA[Re: Help aligning waveform peaks]]> http://cycling74.com/forums/topic/help-aligning-waveform-peaks/#post-227151 Thu, 12 Apr 2012 19:46:58 +0000 DJF Sorry I didn’t see the rest of this message. Thanks so much for the help.

I just added [*~ -3 to invert the phase of the triangle wave so that it’s peak matched the sine’s.

]]> http://cycling74.com/forums/topic/help-aligning-waveform-peaks/#post-227152 <![CDATA[Re: Help aligning waveform peaks]]> http://cycling74.com/forums/topic/help-aligning-waveform-peaks/#post-227152 Thu, 12 Apr 2012 20:03:30 +0000 n00b_meister [*~ -3] would require additional scaling to match the output of your phasor/cos pair; surely you meant [*~ -1] which would work. There are a number of ways to do this:

– Pasted Max Patch, click to expand. –

Brendan

also look here, might be of interest if you’re building LFO’s:

http://cycling74.com/2008/07/15/lfo-tutorial-1-the-zen-of-the-silent-patch/

]]> http://cycling74.com/forums/topic/help-aligning-waveform-peaks/#post-227153 <![CDATA[Re: Help aligning waveform peaks]]> http://cycling74.com/forums/topic/help-aligning-waveform-peaks/#post-227153 Thu, 12 Apr 2012 22:25:37 +0000 big_pause They look like good tutorials Brendan (I’m gonna have a proper read through all those LFO tutorials this weekend, so thank you), and gave me the hint that you could scrap the triangle object and just do it like this,

– Pasted Max Patch, click to expand. –
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