Cycling 74 » Topic: How does delay-based pitch-shift work? http://cycling74.com/forums/topic/how-does-delay-based-pitch-shift-work/feed Mon, 17 Jun 2013 22:07:56 +0000 http://bbpress.org/?v=2.2.4 http://cycling74.com/forums/topic/how-does-delay-based-pitch-shift-work/#post-60774 <![CDATA[How does delay-based pitch-shift work?]]> http://cycling74.com/forums/topic/how-does-delay-based-pitch-shift-work/#post-60774 Tue, 20 Dec 2011 02:28:41 +0000 Johann Lover Hey! I guess this is a quite easy question since the technique exists pretty long: I want to build a pitch-shifter based on delay. How does it work? I assume folloeing:
- building a tape-delay (which changes pitch when delay-time is changed)
- sawtooth modulation of delay-time
Anything useful about my guess? Please help! Thank you!

]]> http://cycling74.com/forums/topic/how-does-delay-based-pitch-shift-work/#post-218716 <![CDATA[Re: How does delay-based pitch-shift work?]]> http://cycling74.com/forums/topic/how-does-delay-based-pitch-shift-work/#post-218716 Tue, 20 Dec 2011 03:05:54 +0000 Floating Point yep you’re on the right track– it’s also related to the doppler effect, when an approaching sound-source’s apparent pitch increases (it’s delay time decreases because sound takes less time to reach the listener), and vice-versa

]]> http://cycling74.com/forums/topic/how-does-delay-based-pitch-shift-work/#post-218717 <![CDATA[Re: How does delay-based pitch-shift work?]]> http://cycling74.com/forums/topic/how-does-delay-based-pitch-shift-work/#post-218717 Tue, 20 Dec 2011 08:34:38 +0000 n00b_meister Hi
as the delayed repeats ‘move further away’ (ie, delay time increases) the period of the frequencies increases, creating the illusion of a fall in pitch and vice versa. It’s obvious how this works in the real world, but perceptually? I haven’t a clue! There’s a great example of how to achieve this effect in MaxMSP on youtube, with helpful explanations of relevant formulae etc, by ‘dude837′

http://www.youtube.com/watch?v=uyzY_ZP54pA

Brendan

]]> http://cycling74.com/forums/topic/how-does-delay-based-pitch-shift-work/#post-218718 <![CDATA[Re: How does delay-based pitch-shift work?]]> http://cycling74.com/forums/topic/how-does-delay-based-pitch-shift-work/#post-218718 Tue, 20 Dec 2011 09:26:40 +0000 roger.carruthers There’s a good explanation in Puckette’s book, which you can view free at:
http://crca.ucsd.edu/~msp/techniques.htm
There’s a PD example, which is fairly easy to translate into Max here:
http://crca.ucsd.edu/~msp/techniques/latest/book-html/node125.html
and the explanation here:
http://crca.ucsd.edu/~msp/techniques/latest/book-html/node115.html
You can ignore the maths, and still get the gist of it!
Cheers
Roger

]]> http://cycling74.com/forums/topic/how-does-delay-based-pitch-shift-work/#post-218719 <![CDATA[Re: How does delay-based pitch-shift work?]]> http://cycling74.com/forums/topic/how-does-delay-based-pitch-shift-work/#post-218719 Tue, 20 Dec 2011 18:35:30 +0000 Johann Lover Thank you, everyone!

]]> http://cycling74.com/forums/topic/how-does-delay-based-pitch-shift-work/#post-218720 <![CDATA[Re: How does delay-based pitch-shift work?]]> http://cycling74.com/forums/topic/how-does-delay-based-pitch-shift-work/#post-218720 Wed, 21 Dec 2011 02:48:40 +0000 Johann Lover Just one fact which actually made me think about all that:
In an interview MOUSE ON MARS say “These are two delays which run into feedback quickly. And with the speed of the feedback-rate you can control the pitch.” – This really confused me. :)

]]> http://cycling74.com/forums/topic/how-does-delay-based-pitch-shift-work/#post-218721 <![CDATA[Re: How does delay-based pitch-shift work?]]> http://cycling74.com/forums/topic/how-does-delay-based-pitch-shift-work/#post-218721 Wed, 21 Dec 2011 16:19:45 +0000 Roman Thilenius on mars physics are different.

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