well it speaks for itself really. Of course this is about voice, or lack of. Addressing clarity and volume. We have no-doubt had our share of 'fork handles" and/or "send two and thri'pmpnce were going to a dance". I envisage this to. Be a smartphone type app which would be a mix of Voice recognition , text to voice etc, with the phrase being recorded and repeated ad nauseum and increasing volume , until the recipient gets it. Could double up as a foreign language translator.
This would save us effort, strain etc.. The screen could turn increasingly red to save us venting our spleen.
A variety of preprogrammed responses could also be built in.
"Yes", "No", "Your calling me at stupid o'clock to talk to me re boilers ya BLINKING FWEEPING BEEP BEEP",
"Combination curry with fried rice, no pork, no beef, no prawns, just chicken breast chopped, thanking you kindly"
"Of course i need a carrier bag, do I look like a freakin octopus"