Filters - Cambridge Audio Azur DacMagic Plus User Manual

azur
DacMagic Plus
Filters
The oacMagic Plus DSP has three different Filter functions: Linear Phase, Minimum Phase and
Steep. All three filters are highly sophisticated audiophile topologies, optimised specifically for audio
playback. In our opinion, these filters offer excellent sound quality but differ subtly in optimisation,
hence we've made all three available to you.
Note: For clarity, all diagrams show the theoretical response of the DSP itself, excluding any analogue
filtering at the DAC output or the anti-aliasing filter applied during recording and/or mastering of the
digital source.
Linear Phase Filter
Frequency response
20
0
-20
-40
-60
-
a l
~
-80
Q)
"'0
::::J
-100
~
r-~- ----r--~-- ~--------,-----~,~------,--~-~-
----r·-----1'' ---
------r-~--
!
!
I
I
i
I '
I
!
i • ; i
\------t
------f-------t------f--------
1
--+--- -
i \ ... -
t-
1 _ [ _ _
l-~. -~~\-~---~-~~~
I
I
I i
!
------+-----+----+-----+------l----11----+-----+---+---t-------i
I I
c:
'QD
co
~ -120
- - - - - - - - + - - - - - 1
-140
-160
-180
-200
ill ,1\1\1111111111 II\
1\1\1\1\
A A ,(lflflflflflfl ,(1(1(\(\(\(\(\
- - - + - -
I ~IU II v v v vII
II
v
II
u u
II
II
\IIi II II II II v Ill II II vII v u II
I
I
I
I I
I
Ill' II"" I'"
'"I' '""' "
I " "
~-+---+---~-~----+----+-----+---+---+---~
i I
I I I
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
0.9
1
Frequency response
31