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Default Q value = 1/√2

Rich G.

Experienced
RMS is the Root Mean (average) Squared value of a waveform. 0.707 Vpk is only good for sine waves.

Q of 0.707 corresponds to the -3db cutoff point (20 log(0.707)) of a filter.

It’s just a coincidence that the two are the same.
 
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