Formula for Ramp LFO Frequency in Hertz

Software questions and issues with the FV-1

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smear
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Formula for Ramp LFO Frequency in Hertz

Post by smear »

Hello! I know that the frequency of ramp LFO's are set by the values -­16384 – 32767. What is the formula to convert a frequency in hertz to this value range?

I found the formula for the sine LFO in the "Basics of the LFOs in the FV-1" pdf, but couldn't find it for the ramp LFO.

Thanks!
frank
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Post by frank »

We never derived that equation since the circuit was designed for address offsetting rather than as an LFO. You should be able to just write the ramp to a DAC output to measure the frequency for different values and come up with an equation. Note that the equation will be different for different ramp amplitudes.
Frank Thomson
Experimental Noize
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