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 Forum index » DIY Hardware and Software » Developers' Corner
Cutoff?
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crimsonkhatru



Joined: Feb 26, 2008
Posts: 3
Location: massachusetts
PostPosted: Tue Feb 26, 2008 6:46 pm    Post subject: Cutoff? Reply with quote  Mark this post and the followings unread
does anyone know if there is an easy way to make a cutoff control for an oscillator?
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DrJustice



Joined: Sep 13, 2004
Posts: 2019
Location: Morokulien
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PostPosted: Tue Feb 26, 2008 7:41 pm    Post subject: Reply with quote  Mark this post and the followings unread
Hi crimsonkhatru!

welcome to electro-music.com!

Perhaps you could be a little more specific - What kind of oscillator and what exactly do you mean by cutoff?

DJ
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crimsonkhatru



Joined: Feb 26, 2008
Posts: 3
Location: massachusetts
PostPosted: Tue Feb 26, 2008 8:29 pm    Post subject: Reply with quote  Mark this post and the followings unread
well to be honest i dont really know what kind of oscillator, its a very simple circuit consisting of two capacitors, a resistor and a transistor wired to one knob for pitch and a power source. by cutoff im looking for that typical frequency cutoff sound that you usually hear when you use a modulation wheel.
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ian-s



Joined: Apr 01, 2004
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PostPosted: Wed Feb 27, 2008 2:32 am    Post subject: Reply with quote  Mark this post and the followings unread
crimsonkhatru wrote:
well to be honest i dont really know what kind of oscillator, its a very simple circuit consisting of two capacitors, a resistor and a transistor wired to one knob for pitch and a power source. by cutoff im looking for that typical frequency cutoff sound that you usually hear when you use a modulation wheel.


Sounds like you want a filter. Based on your description of the oscillator you might like to look for a wha wha pedal circuit. The results will vary depending on the wave shape produced by your oscillator.
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crimsonkhatru



Joined: Feb 26, 2008
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PostPosted: Wed Feb 27, 2008 9:34 am    Post subject: Reply with quote  Mark this post and the followings unread
great, i'll give that a try. thanks.
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