Magnitude of one biquad band at freq (Hz), in dB. Evaluates the transfer function of
the band's cookbook section on the unit circle (z = e^{jw}) directly — the honest
magnitude, no approximation. A band at or above Nyquist, or an ill-formed one, yields
0 dB.
The section comes from rbjSection — the same cookbook transcription
rbjCoeffs normalises for the engine, so the drawn curve and the coefficients the
engine runs are the same filter by construction.
Magnitude of one biquad band at
freq(Hz), in dB. Evaluates the transfer function of the band's cookbook section on the unit circle (z = e^{jw}) directly — the honest magnitude, no approximation. A band at or above Nyquist, or an ill-formed one, yields 0 dB.The section comes from rbjSection — the same cookbook transcription rbjCoeffs normalises for the engine, so the drawn curve and the coefficients the engine runs are the same filter by construction.