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The “Fast” filter exhibits no ringing – the transient nature of the music is preserved. This type of filter
has a purity and “naturalness” sound.
The “Smooth” filter is a digital filter which implements sampling theory and is designed for near
perfect technical response in the frequency domain. It’s quite useful for simpler acoustic recordings
as it sounds more natural. The filter has slightly lower bandwidth but superior rejection of out of
spectrum noise and thus has a very clear, smooth, open sound.
The “Wide” filter has a gentle rate of attenuation, minimum “time-domain ringing”, minimal out of
spectrum noise and thus is quite useful for high sample rate (96kHz and above) files. It has a very
‘clean’ sound, even if it doesn’t have the transient impact of “Fast”.
The “Narrow” filter typifies industrial standard characteristics (-6dB at 1/2 Fs with significant time-
domain ringing) and is included here for comparison purposes. This filter has high jitter tolerance.
The Digital Filter state will be retained on Artera Play even it enters Standby but not Power Off.
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