You are right. That is as intended. And yes, similar effects are possible with different (smaller or larger) hertz values. The effect is different because not only is the overall pitch of the "tune" changed, but different notes that are played come within audio range, while others exceed it. It provides a way to cut through the clutter and squeals. (Did you ever try to figure out a way for Fractint to generate "silent notes" or rests? The hertz= parameter can do that.)

While I am not sure just what the hertz values that are produced by the orbitsave=sound relate to, I always considered the hertz adjustment to be a relative one rather than absolute. At least I think that's the way I remember it. It has been many years since I really gave it much thought.

And the problem that I mentioned with DOSBox and different resolutions tends to confirm that a bit, I think. If the hertz values were absolute, they would yield similar sounds no matter the resolution. Since that is not the case (in DOSBox), then what is the "native" resolution that will yield correct hertz value to sound output?

On 5/3/2011 8:19 PM, Jay Litwyn wrote: 
I am a bit concerned about the negative values for Hertz. In literal 
terms, that is undefined, and Hertz are scalar, so negative values 
should come through as pauses or silences. Maybe that is what you 
nitend, Mister Jemison. Maybe you could get a similar effect with very 
small Hertz values. 



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