Go Down

Topic: Audio Output from SD (Read 1 time) previous topic - next topic

MarkT

Hmm, interesting; so it's not as simple as outputting a PWM with a duty cycle proportional to the sample's value.

It will be a discussion for another thread if you want to keep talking about that, because we are getting off topic here.
Yes its exactly that simple, if you are prepared to settle for 8 bit resolution only.  Noise shaping magics
the quantization noise up in frequency till its ultrasonic, effectively increasing the number of bits at lower
audio frequencies.  Good google term is sigma-delta modulation.
[ I will NOT respond to personal messages, I WILL delete them, use the forum please ]

Go Up