Pioneer VSX-9040TXH, Operating Instructions Manual

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The Advanced MCACC menu
10
84
En
How to interpret the graphical output
The g r a p h shows decibels on the ve r tical axis and time (in
milliseconds) on the ho r izontal axis. A st r aight line
indicates a flat- r es p onse r oom (no r eve r b), whe r eas a
slo p ing line indicates the pr esence of r eve r be r ation when
out p utting test tones. The slo p ing line will eventually
flatten out when the r eve r be r ant sound stabilizes (this
usually takes about 100 ms o r so).
By analyzing the g r a p h, you should be able to see how
you r r oom is r es p onding to ce r tain f r equencies.
Diffe r ences in channel level and s p eake r distance a r e
taken into account automatically (com p ensation is
pr ovided fo r com p a r ison p u rp oses), and the f r equency
measu r ements can be examined both with and without
the equalization p e r fo r med by this r eceive r .
1
Setting Acoustic Calibration EQ Professional
according to your room characteristics
Using the manual setu p , you can set the time p e r iod at
which the f r equency r es p onse is analyzed, p in p ointing
the time that is best fo r system calib r ation with you r
p a r ticula r r oom cha r acte r istics.
The g r a p h below shows the diffe r ence between
conventional acoustic calib r ation and pr ofessional
calib r ation (the g r ay ci r cle indicates the p oint whe r e the
mic r o p hone ca p tu r es sound du r ing f r equency analysis).
As soon as audio is out p ut f r om you r s p eake r system, it
is influenced by r oom cha r acte r istics, such as walls,
fu r nitu r e, and the dimensions of the r oom. The soone r
the f r equency analysis, the less it is influenced by the
r oom. We r ecommend an ea r lie r time setting of 30-50ms
to com p ensate fo r two majo r facto r s that will influence
the sound of most r ooms:
•
Reverberance of high vs. low frequencies
–
De p ending on you r r oom, you may find that lowe r
f r equencies seem ove r ly r eve r be r ant com p a r ed to
highe r f r equencies (i.e. you r r oom sounds ‘boomy’).
This may r esult in a skewed f r equency analysis if the
measu r ement is done too late.
• Reverb characteristics for different channels –
Reve r b cha r acte r istics can be somewhat diffe r ent fo r
each channel. Since this diffe r ence inc r eases as the
sound is influenced by the va r ious r oom
cha r acte r istics, it is often bette r to ca p tu r e a
f r equency analysis ea r ly on fo r smoothe r mixing of
channel f r equencies/sounds.
If you r r oom isn’t affected by the facto r s above, it is often
not necessa r y to make a
30-50ms
setting. Late r time
settings may pr ovide a mo r e detailed sound ex p e r ience
with you r s p eake r system. It is best to t r y and see what
wo r ks best fo r you r p a r ticula r r oom.
Note that changing the r oom (fo r exam p le, moving
fu r nitu r e o r p aintings) will affect the calib r ation r esults.
In such cases, you should r ecalib r ate you r system.
Using Acoustic Calibration EQ Professional
1 Select ‘EQ Professional’, then press ENTER.
Note
1 Note that due to an effect known as ‘g r ou p delay’, lowe r f r equencies will take longe r to be gene r ated than highe r f r equencies (this is most
obvious when com p a r ing the f r equencies at 0 ms). This initial slo p e is not a pr oblem (i.e. excessive r eve r b) with you r listening r oom.
Level
Test tone
Acoustic Cal. EQ P r o.
calib r ation r ange
Conventional MCACC
EQ calib
r ation r ange
Time
(in msec)
80 160 0
Level
Low
f
r equencies
Acoustic Cal. EQ P r o.
calib r ation r ange
Time
(in msec)
80 160
High
f
r equencies
Conventional MCACC
EQ calib
r ation r ange
0
Level
F r ont L
Acoustic Cal. EQ P r o.
calib r ation r ange
Time
(in msec)
80 160
F r ont R
Conventional MCACC
EQ calib
r ation r ange
0
1. Fine Channel Level
2. Fine SP Distance
3. Standing Wave
1c.Manual MCACC
4. EQ Adjust
5. EQ Professional
A/V RECEIVER
Exit Return
a. Reverb Measurement
b. Reverb View
c. Advanced EQ Setup
1c5.EQ Professional
A/V RECEIVER
Exit Return
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