You could approach this two ways.
1. Set a frequency limit and let Spooky2 be your tool. It will raise or lower accordingly using the harmonic type set.
2. Break out a calculator. Depending on the harmonic type you want to use, it may be more complex than the following simple starting point.
Double the frequency till you get to the range you want. Alternative is to use a calculator with a x to the power of y button. Set x = 2, and y the amount of octaves you want to jump to. This will return the number to multiply your frequency by.
1000 Hz raised 8 octaves. 2^8 = 256. 1000*256 = 256,000 Hz
1000 Hz * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 also results in 256,000 Hz
Hope that gives you a good start.
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