Hard to tell exactly what this entails, but there is a very functional low-cost solution already on the market called the Pocket Talker (https://www.amazon.com/

Hard to tell exactly what this entails, but there is a very functional low-cost solution already on the market called the Pocket Talker (https://www.amazon.com/Pocket-Talker-Ultra-System-Headphone/dp/B000S01IOE https://www.amazon.com/Pocket-Talker-Ultra-System-Headphone/...)