No I think you have the wrong idea about sound. You have a waveform, a rapidly changing voltage. This needs to be turned into numbers, by say and arduino. These numbers are then sent to another arduino which turns them back into sound. The problem is that the arduino is not suited to do this without extra hardware unless you want just telephone quality sound.
I have a link Arduino to a laserpoint and photodiode.
I transmit the text by the Arduino program.
I want to transmit a signal of sound or music by that link.
I do not need quality, just want to get sound on in receiver.
My TX is the laser, and my RX is the photodiode.
I do not know if I'm being very clear, my english is by google.
Thanks.
He plays a sound when the light signal comes in contact with the photodiode.
That is, I have an photodiode in the Arduino and the program that makes out a sound the speaker when approaching a flashlight in front of the photodiode.
I want to get this program and include in link laser program , you can tell me how can I do?
Start with something simple like this, where you have a transistor that controls when the laser transmits, and a receiver to accept the signal.
Make a simple thing work. Improve from there.
Send serial data into the laser.
Receive serial data from the photodiode.