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From: Don Pearce
Subject: Re: Pulse Height Measurement
Date: Tue, 21 Jan 2003 17:06:25 +0000
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On Tue, 21 Jan 2003 16:57:22 +0000, John Devereux
>>On Tue, 21 Jan 2003 16:06:45 +0000, John Devereux
>>>What's the best way to do this stuff?
>The problem is that the pulses come with different widths and
>However, the circuit / algorithm does indeed have a sort of
>high-pass filtering effect. So perhaps I have just designed a
>very complicated one...
If you are measuring pulse height the last thing you want is a
highpass filter. It will tend to differentiate the pulse, and in the
worst case you will double the peak-to-peak height of the pulse.
Are you really trying to measure the peak - even if it occupies just
one sample? If not, perhaps you would do better with a sort of rolling
average that smooths off some of the noise. This would actually be a
lowpass rather than highpass function. But it would give you smoother
and more reliable data to measure.
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