timestamp in .muse file

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reyhaneh
Posts: 10
Joined: Wed Jul 21, 2021 3:48 pm

timestamp in .muse file

Post by reyhaneh »

Hi James,

I have saved MUSE S data in Muse format and with Constant sampling rate, which should be 256Hz.
The size of the collected data is 5943624 for duration of 06:28:15 HH:MM:SS, which corresponds to the average sampling rate of 255.1452Hz. This is very close to 256Hz.
However, when I check the interval between timestamps, there is a huge variation in that. The median is 0.12 ms, mean is 3.91 ms, min is .0081ms, and max is 14806.1ms. I have attached the plot for the interval in ms.

Could you please help me understand it?
Screenshot 2021-11-13 143251.png
Screenshot 2021-11-13 143251.png (17.84 KiB) Viewed 673 times
Kind regards,
Reyhaneh
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James
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Posts: 1103
Joined: Wed Jan 02, 2013 9:06 pm

Re: timestamp in .muse file

Post by James »

Yes, this is normal. Sorry.
It's bluetooth packet buffering.
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