heart rate monitoring via audioplethysmography

[khimaros]

pie in the sky idea. would be the first consumer device capable of doing this. as discussed here: https://9to5google.com/2023/10/27/google-anc-earbuds-heart-rate/

and the full research paper available here: https://storage.googleapis.com/pub-tools-public-publication-data/pdf/e107049945d4e506308b995a7d9d77daff1f6133.pdf

[shymega]

Whilst interesting, I think it's outside of the scope of the firmware. And the clients of the data measured by the PineBuds probably would be limited. Just my thoughts...

[khimaros]

@shymega could you elaborate on this a bit? how would the clients of the data be limited? do you mean the hardware is too resource constrained?

[amazonparrot]

I think this idea is actually very good, but I have yet to find out how to access each mics individually, if I know how to access the mics individually I think this would be doable. There isn't much commercial earbuds that can do this, if this application is included this would definite cause some attentions. @khimaros please let me know if you know anyone is currently working on this?

[khimaros]

@amazonparrot as an interesting starting point, this is the branch where someone started working on ANC support: main...anc-testing

if you look at the tgt_hardware source files, you can see where they are configuring the feed forward and feed back microphones for the left and right earbud. does that help point you in the right direction?

[khimaros]

maybe @Ralim could provide some context on that branch.

[Ralim]

I'm not sure what context your asking for here?
I configured the mics to match the schematics for how the unit is wired up. Then I ported the tuning data from a dump of my units.

It still doesn't work properly but I haven't looked into it further as I wasn't sure where to look next tbqh.

[khimaros]

@Ralim as a baseline, do you believe you were getting accurate signal from each of the channels as you configured them and they were correctly mapped?

[Ralim]

Correctly mapped: yes
Accurate data: I think so, though lightly suspect data is coming in quiet.