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Difference between revisions of "NVGate time shift resampling"
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NVGate time shift resampling (view source)
Revision as of 16:31, 29 April 2020
, 16:31, 29 April 2020→Benefits of Time shift resampling
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Picture 3: Time domain averaging in FFT | Picture 3: Time domain averaging in FFT | ||
=== Precision calculation:=== | |||
==== Without time shift resampling==== | |||
Standard absolute phase error calculation without time shift resampling can be determined as follow (worst case where event occurs right after last sample) | Standard absolute phase error calculation without time shift resampling can be determined as follow (worst case where event occurs right after last sample) | ||
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for instance for a total analysis band of 20kHz, maximum error at 10kHz frequency will be Phase<sub>error</sub> = (360/2.56)*10/20 = 70.3 deg | for instance for a total analysis band of 20kHz, maximum error at 10kHz frequency will be Phase<sub>error</sub> = (360/2.56)*10/20 = 70.3 deg | ||
==== With Time shift resampling==== | |||
Standard absolute phase error calculation with Time Shift Resampling can be determined as follow (worst case where event occurs right after 1/16<sup>th</sup> of a sample ) | Standard absolute phase error calculation with Time Shift Resampling can be determined as follow (worst case where event occurs right after 1/16<sup>th</sup> of a sample ) | ||