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mich11 / multi-band-integrator

An open-ephys plugin that allows to mix, weight, and apply a rolling average to bandwidths of interest on a single channel. We're using it to detect absence-like seizures in mice in real time.
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Sampling Rate Question #1

Closed nikhilramachandra closed 3 years ago

nikhilramachandra commented 6 years ago

Hi,

I have a question about the sampling rate of the multi-band integrator. Is the power calculated and returned at the same sampling rate being used for open ephys? For example, if I am sampling in open ephys at 30,000Hz, and I am using the multi-band integrator with the crossing detector, with the crossing detector set so that 50% of the previous 30,000 power signal samples must be above the threshold, does this mean half of the power signal values in the last 1 second must be above the threshold?

Best,

Nikhil

mich11 commented 6 years ago

Hi,

Sorry for the delayed response. Yes, the output signal is calculated and returned at the same sampling rate as the sampling rate set on open ephys's rhythm FPGA. In your example, you are correct that 50% of the output values from the multi-band integrator over the last 1s would need to be above the threshold. The multi-band integrator also applies a rolling average, so it can also tell you something about the previous 1s if that's useful for your waveform detection.

Best, Michelle

On Tue, Jul 10, 2018 at 9:24 AM, nikhilramachandra <notifications@github.com

wrote:

Hi,

I have a question about the sampling rate of the multi-band integrator. Is the power calculated and returned at the same sampling rate being used for open ephys? For example, if I am sampling in open ephys at 30,000Hz, and I am using the multi-band integrator with the crossing detector, with the crossing detector set so that 50% of the previous 30,000 power signal samples must be above the threshold, does this mean half of the power signal values in the last 1 second must be above the threshold?

Best,

Nikhil

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