How can we calculate frequency for PPG data using Polar device? For now i have set the sample rate to 135hz but its not giving me 135 records its giving me more than that after enabling sdk mode.

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How can we calculate frequency for PPG data using Polar device? For now i have set the sample rate to 135hz but its not giving me 135 records its giving me more than that after enabling sdk mode. #378

Closed SohamSimform closed 10 months ago

SohamSimform commented 1 year ago

Platform your question concerns:

[o] Android
[ ] iOS
[ ] Other
[ ] Platform is not relevant for this question

Device:

[o] Polar OH1
[o] Polar Verity Sense
[ ] Polar H10
[ ] Polar H9
[ ] Other
[ ] Device is not relevant for this question

Description:

andYgnite commented 11 months ago

Hi @SohamSimform , can you please details more? If I well understood you set the sampling rate to 135Hz in SDK mode but you get higher value?

jimmyzumthurm commented 10 months ago

@SohamSimform Hi, PPG data that comes from Verity Sense contains 4 channels, there is 3 green channels and 1 for ambient light. This might be why you see more data than what you expect.

Also note that there was a bug with older Verity Sense firmware versions about sampling rate : https://github.com/polarofficial/polar-ble-sdk/blob/master/documentation/KnownIssues.md This is fixed with latest 2.1.0 firmware