Back in the early 80's, I remember hooking up a microphone to my TRS-80's cassette port, and sampling it furiously to digitize some audio.
It sorta worked. If I screamed into the mic, I could, just barely, record a 16KB audio sample that played back recognizeably (barely). (Emphasize the barely). I remember screaming "KICK ME" into the mic, and it played back.
Question. Could I replicate this ancient process on the Arduino? I'm not looking for 22kHz or anything that grandiose. I'd like to be able to do around 8kHz sampling, maybe 10 seconds, or so, and stream it out over serial to another Arduino to playback the sound.
My wife broke her ankle, and it'd be super-neat (TM) if I could build a little battery powered intercom.
Of course, I could just go out and BUY something (shudder)...
I guess since I was able to do it on a 1.77 MHz Z80, it should be possible on the Atmega328...
Any suggestions?