Tomtom - changing alert sounds

My dad's getting a bit fed up of the BONG!!!!! noise when approaching a speed/safety camera.

Anyone know how to change it to perhaps a voice?

I ony seem to be able to find how to turn it off, rather than change it.

Edit: It's a tomtom one if that's important.

 

long time since i did it but on my go the speed cameras are just generic points of interest and have a sound assigned to them just reassign the sound for that poi.
if this isn;t the case with the one try turnign them off and then dl ing a speedcamera poi database and set up your own sounds.
iirc the sound format on the go is ogg.

 

Thanks for the help. I've no idea what you're on about though

 

me either - i just string random words together and influx the ranting jellyfish.

 

try these 2
http://www.tomtomsatnav.info/realvoice.html
http://www.pocketgpsworld.com/modules.php?name=Forums&file=viewtopic&t=47366
i've changed my tomtom voice to liz whitaker dl'd from the 1st link. she works in radio, and has a very clear voice.

 

and from the manual