How to apply bandpass filter to a single data type?
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Rida Alfonso
on 19 Sep 2020
Commented: Star Strider
on 20 Sep 2020
We have recorded signals but when i load the signal into matlab, the data type is single. I want to apply bandpass filter and notch filter to these single data type signals. I have applied both the filters to the signals after converting them to double but it alters the results. Thats why i was curious if we can use band pass and notch filters on single data types.
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Star Strider
on 19 Sep 2020
Yes. You can use single.
See the documentation section for x . This specifically refers to the Signal Processing Toolbox bandpass documentation, however it applies to all the related functions.
I do not understand how converting them to double would alter the results, however I do not have your signals to experiment with. If you are using something other than the Signal Processing Toolbox, it would be helpful to know that.
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Star Strider
on 20 Sep 2020
As always, my pleasure!
Filters by definition remove signal energy, so the waveform will change after the filter is applied. The change depends on the filter characteristics.
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