Design of Infrared Audio Transmitter and Receiver for point to point data transmission

The main idea behind this paper is to generate musical notes by infrared radiations. The infrared radiations are transmitted and received by IRLEDs and phototransistor respectively. This paper emphasizes the way by which music is generated and driven by IR rays. Using the circuit one can play songs from his/her iPod, mobile or computer to an external speaker without having to connect them directly through an AUX cable. The circuit comes with many limitations and there are better ways like Bluetooth to play songs wirelessly. The melody produced is heard through the receiver’s loudspeaker. For maximum sound transmission the IRLEDs should be oriented towards IR phototransistor. It can be used in wireless music systems, mobile gadgets and CCTV cameras. Infrared communication is the main mode of short distance communication and has been widely used for point-to-point data transmission.