'Discworld' on iPad has a very high pitched Speech ::

[ftwo]

Hello,
I have a little problem with Discworld 1 on iPad.
Everything is working great except the voices are all very high pitched. Does anyone have an idea how I could solve this problem?

Thanks ...

//edit

Okay sorry I found the solution by myself:
Just change the AdLib emulator to 'MAME OPL emulator'. I thought I tested both but I tested the DOSBox emulator twice!