The SparkFun VoiceBox Shield adds all the capabilities of the SpeakJet voice and sound synthesizer to your Arduino Project via serial commands.
2-1/4" round, 8 ohm, 0.25 watt general purpose replacement speaker. Paper cone, Alnico magnet. Unit comes with 6" wire lead attached.
Small electret microphone. Useful in acoustic and audio applications, voice recordings.
Think of this as a audial robotic digestive system. It'll eat 20 whole seconds of sound before barking it back at you with beautiful clarity, maybe not exactly as you remember it but pretty close!
Yes, there are other music/mp3 shield out there, but SEEEDStudio does it again with a very complete unit!
The SOMO-14D is a tiny audio module that can play back stored audio files from a micro-SD memory card.
The Vinculum VMusic2 is a killer little module that lets you add USB drives and add MP3 playback to your microcontroller projects!