Another way to do audio from a uP


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Volhout
Guru

Joined: 05/03/2018
Location: Netherlands
Posts: 5994
Posted: 09:35pm 06 Apr 2023      

  stanleyella said  Hasn't "sound" got out of hand a bit?
I personally would like the filter in the manual with preferred value caps.
What are people expecting the sound to do?
The carrier freq is not a problem in reality.
wav sounds ok.


This could give you true CD quality audio from a picomite. Not the 80ś game sounds.
But you would need a full PWM for left channel (2 outputs) and a full PWM for right channel (2 outputs) and you would need 2 of these 74HC14 circuits.

And Peter would need to adapt the audio core to support this dual PWM's.

Question...is it worth it....?

Or should we try to connect a I2S audio DAC. Dual 16 bit DAC and includes analog volume control.

Volhout

P.S. For me picomite audio is good enough. I can live with the 44kHz PWM version, and may try the 12 bit DAC one day. But not any day soon.
Edited 2023-04-07 07:37 by Volhout