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In the sine wave source is the formula that links samples per period and sample time correct? It says: Samples per period = 2*pi / (Frequency * Sample time), but I believe it should be Samples per period = Sample time / Frequency.

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Ilaria Salutari
Ilaria Salutari 2016 年 7 月 31 日
回答済み: David Goodmanson 2021 年 2 月 19 日
See attached file
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Srikar
Srikar 2021 年 2 月 18 日
Hi do you think Samples per period = Sample time / Frequency will balance the units ? sample time is in sec and Frequency in hertz (hertz is 1/sec) in that case your equation will end up having samples as sec2. I think the Math equation is right.

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回答 (1 件)

David Goodmanson
David Goodmanson 2021 年 2 月 19 日
Hello Ilaria,
I believe it is neither of those. Rather it is what is in the PNG with the 2pi crossed out:
samples/period = 1/(frequency*sample time)
since frequency = cycles/sec, period = sec/cycle =1/frequency
# samples = period/sample time = 1/(frequency*sample time)

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