7. Audiometer according to claim 5 further including a data bus (20) connected to said means (21) for generating the electrical signals; a driver circuit (24) connected to the data bus and providing driving power to the LCD in matrix form (11,26); and wherein a data input stage (12) is provided, connected to said data bus and receiving the amplitude control output signal, the test control output signal and the perception output signal, and connecting, respectively, said signals to the driver circuit to energize the LCD in matric form in accordance with said signals.
7. Audiometer according to claim 5 further including a data bus (20) connected to said means (21) for generating the electrical signals; a driver circuit (24) connected to the data bus and providing driving power to the LCD in matrix form (11,26); and wherein a data input stage (12) is provided, connected to said data bus and receiving the amplitude control output signal, the test control output signal and the perception output signal, and connecting, respectively, said signals to the driver circuit to energize the LCD in matric form in accordance with said signals. 8. Audiometer according to claim 7 further including an output control unit (43) connected to said data bus and providing output signals for an external recording apparatus.