Bill,
Earlier I had mentioned what I thought was unique behavior of Fractint when run under DOSBox, specifically the shifting of pitch in sound files when changing resolution. It turns out that that is not unique to DOSBox. It works that way on my 486 W98 using ver. 20.03.1.
However, on my 386 W95, I have ver. 19.6. That was prior to the <ctrl +F> sound parameter inclusion. There is no provision in that version to use your sound card or control pitch...just x,y or z and orbitdelay via the <x> screen. Also, the orbitsave=sound command was not included. In that version. The changing of display parameters in 19.6 doesn't change the pitch. I noticed, as well, that the "calibrating timer" notice no longer appears when entering the <o> (oh) command during image generation in or after the ver.20 release,. I suspect that that may have something to do with the pitch shifting. Just a hunch.
If you add the parameter debug=4020 the old timer will be used. Also, try moving the sound= parameter to after all the other sound related parameters, as suggested earlier. The sound card does not get properly initialized with the order Fractint currently writes the sound parameters to the PAR. I have this fixed in my version, but probably won't have time to put together a formal patch until June. Jonathan