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Nintendo® Confidential

## alCents2Ratio

Syntax

    #include <libaudio.h>
    f32 alCents2Ratio(s32 cents);

Arguments

- cents is the value measured in cents (a cent is 100th of a whole step)

Explanation
It is a utility routine for converting a detune value (measured in cents) into a ratio to be multiplied against the base pitch. Negative values lower the pitch, and positive values raise the pitch.
Example
A value of 1200 cents will produce a ratio value of 2, which when multiplied times the base pitch, will produce a pitch one octave higher. A value of -1200 will produce a ratio value of 0.5, which when multiplied against the base pitch will produce a pitch of one octave lower.

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Copyright © 1998
Nintendo of America Inc. All rights reserved
Nintendo and N64 are registered trademarks of Nintendo
Last Updated April, 1999