azur DacMagic

Our Steep filter is a linear phase filter that has been optimised for stop band attenuation of close-in aliasing images. Here we have traded a little attenuation of the very highest frequency response (-2dB at 20kHz) and a little more pre- and post-ringing for a very steep attenuation just outside the pass band. The Steep filter is able to attenuate aliasing at 22kHz by some 80dB.

Impulse response

Amplitude

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0

20

40

60

80

100

120

140

160

180

Time (samples)

ENGLISH

Note: All filters exhibit the same ultimate roll-off of approximately 140dB.

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Cambridge Audio azur DacMagic user manual Azur DacMagic