Investigate possible ways to split audio sources across two devices

[gavinhenderson]

Note, this is not to do the work but instead to figure out the best way to do it then create the tasks to do it. Those tasks will then be prioritised seperately

[willwade]

Maybe of interest https://developer.apple.com/forums/thread/5787

https://developer.apple.com/documentation/avfaudio/avaudiosession/category/1616484-multiroute

Also in PASCo look for "Override output" in the code. I'm sure that was it. I have a feeling though it got dropped / ripped out in the last bit refactor

[gavinhenderson]

Possible solution:

https://www.amazon.co.uk/dp/B00CS8FQJC?ref_=cm_sw_r_apin_dp_63MCRWQDQ4D8PQKGAPM3&language=en-GB https://www.1mii.com/product-item/ml100/

[willwade]

If we were to develop an electronics board it would be worth googling esp32-s3 (needs multicore), A2DP, see this library, and the VS1053

Interesting board: https://kateiren.github.io/esp32-webradio/ https://github.com/paulgreg/esp32-bluetooth-audio-adafruit/ and hackaday page: https://hackaday.io/project/183183-esp32-bluetooth-audio-receiver

Note what we would also need is:

• Headphone jack (note some of those VS1053 development boards have that)

So in short

Audio Output Management:

Speaker Output: Connect the left channel of the VS1053 to a small amplifier circuit and then to the speaker.

Headphone Jack: Connect the right channel of the VS1053 to the headphone jack. We may need a small resistor to match impedance and protect the headphones.

Would also need some power regulation and charging circuit for a lipo