Re: [linux-audio-dev] XAP: Tuning

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Subject: Re: [linux-audio-dev] XAP: Tuning
From: Frank van de Pol (fvdpol_AT_home.nl)
Date: Fri Dec 20 2002 - 00:01:08 EET

On Thu, Dec 19, 2002 at 08:01:57PM +0100, David Olofson wrote:
>
> What frequency does PITCH 0.0 correspond to?

unadjusted pitch, A4 = 440 Hz

for a PITCH of +1.0 one octave up, -1.0 one octave down etc.
        F[pitched] = F[orig] * (2 ^ PITCH)

or, for those who prefer to specify the number of notes:
        PITCH = ((2 ^ (1/12)) ^ note)

Frank. 

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