16-bit DAC too arduino for nice sinus waves

Thanks, it's a lot clearer now... i'd never heard of that protocol!

If i understand it right. i have too send 16-bit data too the DAC and the DAC will translate it into sweet sounds :)... How do i know how fast i have too update these messages? What is the theory behind making 16-bit sinus waves?

I understand for instance that with the PWM synth method you can control the frequency by speeding up or slowing down the delay()'s, i understand that part, but how is this done with a 16-bit data string? I think i don't know enough about audio generating...