Hi, I am designing a mobile robot based on AT91SAM7S64 microcontroller. I want the robot to emit sound from .wav files. Nothing fancy, 8-bit 11khz mono wavs. Let's say I will handle reading/decoding the .wav files from SD card. What remains is the sound emission - I'll probably need a DAC and some kind of AMP to drive the little 8 Ohm speaker. I'd be happy if the solution was simple as possible and not very costly. The 3.3v supply is available (Battery -> DC/DC converter). What design would you recommend?
Cheers, Alexiey