NOTE: [n] is chosen through the use of VOICEBANKREG Chooses the voice play rate (Low byte).
u8 in IO at 0x51 called VOICEPERIODLREG
76543210
PPPPPPPP
H: RW Period (Low Byte)
NOTE: [n] is chosen through the use of VOICEBANKREG Chooses the voice play rate (High byte).
u8 in IO at 0x52 called VOICEPERIODHREG
76543210
PPPPPPPP
H: RW Period (High Byte)