[sdiy] WHICH PIC/UCONTROLLER should I buy today

[Thomas Strathmann]

Am 8/9/10 14:37 , schrieb dan snazelle:
>
> "Regarding the generation of analog signals, you have plenty of options:
> - PWM on a digital pin (no external component needed except maybe a RC filter)"
>
>
>
> am i mistaken in thinking that you cant use the PWM outputs for final audio signals (sine waves, white noise,etc)?or is there a simple way to convert this signal (isnt pwm a square wave output with changing duty cycle?)

Yes, the raw PWM signal is just a rectangle wave with variable pulse 
width. What you are ultimately interested in is the time integral of the 
PWM signal. That's what a lowpass filter at the output is used for if 
you want to output audio signals using PWM.

	Thomas