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Q factor vs bandwidth in octaves band filter -3 dB pass ...
http://www.sengpielaudio.com/calculator-bandwidth.htm
A high filter quality means narrow-band filtering (notch), with a large Q factor. This results in steep filter flanks with a small bandwidth. A low filter quality means broad-band filtering, with a small Q factor. This results in flat filter flanks with a large bandwidth. The larger the Q the more narrow is the resonance peak.
What's the Q factor of a digital filter's pole? - Signal ...
https://dsp.stackexchange.com/questions/19148/whats-the-q-factor-of-a-digital-filters-pole
For the analog S-plane, the Q factor depends on the angle of the complex pole p from the horizontal axis, θ = argp: damping factor ζ = 1 2Q, and ζ = cos(θ), and θ = arg(p) so Q = 1 2cos ( θ) = 1 2cos ( arg ( p)) Right? But in the Z plane, the curves of constant Q are more complicated: So how do you get the Q of a complex pole?
Calculating Q factor for cascading biquads - KVR Audio
https://www.kvraudio.com/forum/viewtopic.php?t=470183
Q=1/ (2*cos (w)) Then the angle becomes. Code: Select all. w = acos (1/ (2*Q)) = 60 degs (or pi/3) If we design a 2 2th order filters, and place the poles symmetrically (around pi/2) in the negative real s-plane using unreasonable math we get pole angles of 15 degrees and 75 degrees (again spaced w degrees apart).
Tuned Circuit Q Factor: RLC Filter Quality Factor ...
https://www.electronics-notes.com/articles/basic_concepts/q-quality-factor/rlc-filter-q-factor.php
Q, quality factor basics Inductor Q RLC network Q. Quality factor or Q factor affects LC filter circuits in the same way that it does for inductors and capacitors. It is generally very important to ensure that the Q is maintained at a sufficiently high levels for the circuit to provide adequate filtering. It is necessary to be able determine ...
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