WWNSD

Very helpful—thank you so much!

I just gave it a try—when feeding I2S data into DOUT, there seems to be faint music coming from the headphone (HP) output under some incorrect configuration (even with no setup at all and I2C not used). It’s probably still my mistake, just a...

[ EDIT: I see that @PaulStoffregen beat me to the punch !! ] Notice that the Teensy Audio Adapter does not have any capacitors between the SGTL5000 & the headphone jack. Also take note of the statement on the snipped example schematic that you...

I'll try to explain, because the datasheet probably doesn't make this clear... Like pretty much all audio chips with single power supply, the audio signals have a DC bias. It's approx 1.5V to 1.6V for chips running from 3.3V, though the exact...

It's incredibly helpful—thank you so much!

Thank you so much for your reply and guidance. First of all, there was a slight mistake in my first message—what I described earlier was actually caused by my own error. I’m using an STM32 to implement music playback on the Teensy Audio Shield...

However, I'm quite confused: in the schematic of the Audio Adaptor Boards for Teensy, HP_VGND is connected to the headphones, instead of being left floating as in the classic example from the SGTL5000 datasheet.

I think I've found the problem. It seems that the connection with jumper wires isn't very stable, causing distortion—which made me mistakenly think there was an issue with the headphone (HP) volume control. However, once the distortion occurs, it...

I’ll delete that ambiguous part.