Speaker Models

The speaker models include a simple model of an (analogue) loudspeaker and (digital) piezo buzzer with sound being played back in real-time through your sound card.

Please note that, for best results, a fairly powerful PC is required to use the analogue loud-speaker model. We would recommend a 600MHz processor or higher.
PIC Doorbell Schematic
A sample design illustrating the use of a PIC16F84 and a loudspeaker to implement a multi-tune doorbell.