Would it be possible to add COM port output as an audio destination in SBEMU (11025 Hz, mono, 8-bit)?

[VigoElCarpato]

Hi SBEMU team, and thank you for your fantastic work.

I have run an experiment to evaluate the feasibility of transmitting audio through a serial port, sacrificing some quality but using a fixed configuration: 11025 Hz, mono, 8-bit.
The idea is to provide audio output to external devices on systems that have no working sound card or whose audio hardware is not supported (as in my case with a TR2350 using an AMD Geode LX800).

For the test I used Python scripts to transmit both prerecorded audio and live audio from a microphone, and the results were positive: the sound quality is acceptable and certainly much better than having no audio at all.
On the receiving side, a Raspberry Pi or any microcontroller can be used to read the serial data and generate analog audio output.

I believe that adding an option in SBEMU to output audio directly through a COM port at 11025 Hz, mono, 8-bit would be a valuable enhancement, especially because serial ports are still very common.

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