Okay, normally I don't have an issue dissecting tech docs, but audio is not my strong point. On to the questions...
1) Are the 11 bit programmable timers (wavelength) clocked every CPU cycle, or at the start of a duty cycle? I ask this because freq = 1.79 MHz / wavelength / 16? but doesn't this depend on the duty cycle type? very confused
2) What is the sample rate of the apu? If the audio units can produce freqs in the 50k range, then the sample rate must be greater than 44k.
3) Why can there units produce sound at that high of a freq? Humans can't hear above 20k! Dog whistle??
Any help better understanding or breaking this down would be very helpful for everyone I think. Maybe once a have something working I can figure out the rest of my confusion.
1) Are the 11 bit programmable timers (wavelength) clocked every CPU cycle, or at the start of a duty cycle? I ask this because freq = 1.79 MHz / wavelength / 16? but doesn't this depend on the duty cycle type? very confused
2) What is the sample rate of the apu? If the audio units can produce freqs in the 50k range, then the sample rate must be greater than 44k.
3) Why can there units produce sound at that high of a freq? Humans can't hear above 20k! Dog whistle??
Any help better understanding or breaking this down would be very helpful for everyone I think. Maybe once a have something working I can figure out the rest of my confusion.