Re: [linux-audio-user] transposing frequency

From: Atte André Jensen <atte.jensen@email-addr-hidden>
Date: Mon Dec 12 2005 - 00:27:30 EET

Lars Luthman wrote:

> To transpose X semitones up, multiply the frequency with 2^(X/12). To
> transpose down, just use a negative X. For C cents it should be
> 2^(C/1200).

Thanks alot guys.

Right now I just needed the formula, but I'm hoping to find time during
christmas to write a ladspa plugin that transposes using this formula.
Don't know nothing about ladspa, but as far as I ca tell this super
simple transpose-plugin should provide the easies possible way into
ladspa for me. If I can't figure this one out I can't figure nothing out...

-- 
peace, love & harmony
Atte
http://www.atte.dk
Received on Mon Dec 12 04:15:06 2005

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