Microphones. As communities grew and gatherings became larger, the challenge was to create a device that would allow everyone to hear the performers.
I can't see the rest of the answers but I assume that there is a answer saying he basically wings it. hope this helps
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Yes of course. We already have devices that can read facial expressions and respond to them. At some point technology will evolve to the point that it will understand hand signs as well. It can be used to support a conversation with someone who is hard of hearing, or teach people how to sign in ASL without an actual teacher.
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l don't have a idea hopefully you can get the answer god bless
