Semitones & Cents

[Sonicsound100]

I am new to Sonicbirth and I am attempting to create a basic synthesizer. I am having trouble with my semitone and cent parameters. at the moment in my midi 'multi note envelope' I have 'Note' and 'Semitone' summed together going in 'C' on a (multiply)addition component, with cent going to 'A' and a 'Constant' value of 0.01 going to 'B', with the output of those going to 'f' on all my wave generators. However this is giving me a de-tuned sound as I increase the semitone slider value. I understand why this is happening, I don't know the correct method. Any help is greatly appreciated.

[slikmanp]

The note output gives you the frequency values of notes not the MIDI note numbers.

Use the following formula in an equation module.

i0*pow(2,(i1+i2)/12)

i0 = frequency value from the Note output
i1 = Semitone value (can be +/- any whole number)
i2 = Cent value (should be within +/-1)

[Sonicsound100]

Thanks alot, thats solved it!