![Photonics | Free Full-Text | Multi-Channel Long-Distance Audio Transmission System Using Power-over-Fiber Technology Photonics | Free Full-Text | Multi-Channel Long-Distance Audio Transmission System Using Power-over-Fiber Technology](https://www.mdpi.com/photonics/photonics-10-00521/article_deploy/html/images/photonics-10-00521-g001.png)
Photonics | Free Full-Text | Multi-Channel Long-Distance Audio Transmission System Using Power-over-Fiber Technology
Is audio signal DC or AC because I have seen that LM386 only has 1 input for amplifying and another for ground, and Arduino plays music just fine with 1 output and
![audio - How to separate the modulated signal on a DC supply into signal and power - Electrical Engineering Stack Exchange audio - How to separate the modulated signal on a DC supply into signal and power - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/hzHDa.png)
audio - How to separate the modulated signal on a DC supply into signal and power - Electrical Engineering Stack Exchange
![Microware Digital To Analog Audio Decoder Converter - Transfer The Dts/Ac-3 Signal And Stereo(R/L) Into 5.1 Output : Amazon.in: Electronics Microware Digital To Analog Audio Decoder Converter - Transfer The Dts/Ac-3 Signal And Stereo(R/L) Into 5.1 Output : Amazon.in: Electronics](https://m.media-amazon.com/images/I/41+oSA4nLJL._AC_UF1000,1000_QL80_.jpg)