unit of bandpower output argument

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YuJaung
YuJaung 2017-2-21
回答： AmyB 2018-4-11
I calculated average band power using 'bandpower' function. From the output of 'bandpower', I compared the power in different signals. As the output argument is nonnegative scalar, what is this unit of power? This unit is dB? dB/Hz..? etc..??

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回答（2 个）

Star Strider
Star Strider 2017-2-21
It appears to be power, or power/frequency if you choose the 'psd' option. It does not do the dB conversion.
The result is non-negative because by definition power is non-negative.
AmyB
AmyB 2018-4-11
Hi, I am also unclear on the units for the Bandpower function.
If you use the following: p = bandpower(x,fs,freqrange), so no specification of 'psd', does it still not do the dB conversion? The documentation on this function doesn't make it clear what units I should be reporting (W, W/Hz, dB/Hz, etc.)

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