Not sure on Hal. Not used it for quite a few years now, got sick of all the stupid answers. Just play with Haptek, making skins, changing the bodies, making singers etc. If it has the f0= etc, you should be able to change the setting. Or you might have to go into the Hal brain editor & change things there. Sorry, I'm not much help with Hal.
Hi, Demon Raven. You can change them in the standard mood file. Make a copy of the file & call it say, MyMoods.hap. Open it with notepad. In it you will see all the moves for moods. At the end of each line you will see f0= 0.500000. Change those to, say f0=0.800000 or 1.500000. Save it, open a haptek model then drop your file onto it to see any difference. Any problems just ask, glad to help if i can.