FILTER
The C 568 offers five unique digital filtering options dedicated to the
achievement of a better audio experience. These selectable filters allow
users the flexibility to choose key characteristics that affect frequency
response and time domain characteristics.
Before describing these five digital filters, please take time to read the
following brief definitions of some of the terminologies used in their
descriptions.
•
Passband
is the range of frequencies or wavelengths that can pass
through a filter without being attenuated.
•
A
stopband
filter rejects frequencies within a band and letting through
frequencies outside it.
•
Group delay
is the transit time of a signal through a device versus
frequency.
•
Rolloff
is a term used to describe the steepness or slope of the filter
response in the transition region from the passband to the stopband.
•
Ripple
refers to fluctuations in the passband or stopband of a filter’s
frequency magnitude response curve. It is the periodic oscillation in
the passband near the inflection point of the filter (the point where the
passband meets the stopband).
The following is a brief description of each filter’s characteristics. The
selection of filter number is basically a matter of personal choice; tailor
the audio conversion by selecting the filter number that will best suit your
desired listening experience.
Filter 1:
Slow roll off filter that has low group delay, low ripple and wide
stopband characteristics.
Filter 2:
Medium roll off filter that has high group delay, low ripple and
medium stopband characteristics.
Filter 3:
Fast roll off filter that has lower group delay and wider stopband
characteristics.
Filter 4:
Medium roll off filter that has higher group delay and narrower
stopband characteristics.
Filter 5:
Medium roll off filter that has lower group delay and wider
stopband characteristics.
NOTE
The filter effect applies only to the analog output; it is not applicable to
the digital outputs.
OPERATION
USING THE C 568 – CD 9 REMOTE CONTROL
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