I would like to speak into an electret microphone, similar to Sparkfun BOB-12758 (SparkFun Electret Microphone Breakout - BOB-12758 - SparkFun Electronics), and output the sound to a smartphone over Bluetooth.
I am not really sure if this is really an Arduino project. I thought about using the Blynk App, but I am not really sure that this is within the boundaries of the Blynk App...maybe making this more complicated than it needs to be.
I think that I need to obtain a microphone and connect it to a Bluetooth module with A2DP profile, OR just purchase a Bluetooth module with A2DP profile and integrated microphone.
Once paired with the smartphone, what app would I use to receive the voice from the Bluetooth wireless microphone.
I see many products online like this item from FiveBelow: https://www.fivebelow.com/products/bluetooth-adapter-wireless-audio-receiver-w-built-in-mic?gclid=CjwKCAjw64eJBhAGEiwABr9o2FIsonoVO8c9jxY08q7DMvmbAV_OMYU1NY4JMjuUIdS2J3ij1x7bbhoCh-QQAvD_BwE&gclsrc=aw.ds
Any guidance is greatly appreciated.