get trigger at peak

[stephanschulz]

Thank you again for posting this code.
I am able to make it run and I find it works great. I was even able to integrate it in to a openframeworks.cc application.

I was hoping you could point me to the right part of the code where I might be able to extract the moment of a peak. My goal is to make the heart beat readings audible by playing a sound every time we get a peak. The hope if that it will align more or less with the person's actual pulse.

Thank you for any advice.

[prouast]

That's great to hear. To get those timings, you would need to add peak detection to the algorithm - this is currently not implemented.

[stephanschulz]

Thanks for the info.

Am I assuming correctly to do that on the s_f.rows data?
If I get something useful working I will make a PR.

[stephanschulz]

Again thank you for the tip about peak detection.
I forked your code and made an attempt to add it using this c++ implementation of the using z-scores peak detection algorithm https://stackoverflow.com/questions/22583391/peak-signal-detection-in-realtime-timeseries-data/46998001#46998001

The added code draws an additional graph showing the peaks and troughs of the s_f curve. It also draws a filled circle every time the most recent peak value equals 1.

All this was done to get me one step closer to visualizing the onset of the live heart beat.

[prouast]

Thanks for keeping me up to date on this, very cool to see.

[Jon-Zbw]

很高兴听到。要获得这些时间，您需要在算法中添加峰值检测--这目前还没有实现。

谢谢你让我了解最新情况，很酷。

Its pretty good！！！Do you have Python version?