Allpassphase (PREMIUM | 2027)

where ( \omega ) is normalized frequency (0 to ( \pi )).

| Frequency (Hz) | Phase (degrees) | Group Delay (samples) | |----------------|----------------|----------------------| | 0 | 0 | ≈0.28 | | 500 | -22 | 0.31 | | 2000 | -95 | 0.55 | | 5000 | -162 | 0.21 | | 10000 | -176 | 0.06 | allpassphase

[ H(z) = \fraca + z^-11 + a z^-1, \quad |a| < 1 ] where ( \omega ) is normalized frequency (0 to ( \pi ))