Sound signal (word) to the intersection of the beam of the photorelay (IR diodes, photodiodes)?

Question

Electronics

Can you help?

Photorelay, instead of a diode, it is necessary to somehow put a device for outputting an audio signal (word). (I saw the implementation of voice acting on Attiny). How to do it?

Answer 1

The easiest way is to screw some chip from the ChipCorder family from Winbond there. Here is an article on the topic.