Um, probably discussed before but I can't seem to find a search feature on these boards. How do I turn down the "Betty" voice in cockpit and ONLY her voice?
You can change the ALT warning from 500 feet to whatever - I will sometimes take it down to zero. Use the UFC ALT, zero and Return/Enter buttons. I don't know how to affect the "PULL OUT" "PULL OUT" screaming warning.
Try turning the master IVC volume knob to minimum and running through the IFFCC pre-flight BIT. That should show which sounds are reducable and which aren't. I make it a habit of reducing the stall/peak tone knobs to about 15% every flight. GCAS/ALT alert stuff might be mandatory but you can turn off the ALT alerts by setting their value to 0 and you can break GCAS by turning off the radio altimeter.