Sony STR-DE725 - Manual (Page 29)

Customizing Sound Fields
By adjusting the surround parameters and the
equalization of the front and center speakers, you can
customize the sound fields to suit your particular
listening situation.
Once you customize a sound field, the changes are stored
in memory indefinitely (unless the receiver is unplugged
for about one week). You'can change a customized sound
field any time by making new adjustments to the
parameters.
WALL TYPE (WALL)
Initial setting: midpoint
When sound is reflected off soft material, such as a
curtain, the high frequency elements are reduced. A hard
wall is highly reflective and does not significantly effect
the frequency response of the reflected sound. This
parameter lets you control the level of the high
frequencies to alter the sonic character of your listening
environment by simulating a softer (S) or harder (H) wall.
The midpoint designates a neutral wall (made of wood).
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See the table on page 33 for the parameters available in
each sound field.
To get the most from multf channel
surround sound
Position your speakers and do the procedures described
in “Multi-Channel Surround Setup" starting from page 13
before you customize a sound field.
Adjusting the surround parameters
The SURROUND menu contains parameters that let you
customize various aspects of the current sound field. The
settings available in this menu are stored individually for
each sound field.
1
Start playing a program'sourc^ encoded with multi
channel surround sound.
2
Press CURSOR MODE repeatedly until the
SURROUND indicator lights up.
3
Press the cursor buttons
(A
or
V)
to select the
parameter you want to adjust.
4
Press the cursor buttons « or » to select setting
you desire. The setting is entered automatically.
EFFECT LEVEL (EFFECT)
Initial setting : (depends on sound mode)
This parameter lets you adjust the "presence" of the
current digital cinema sound surround effect.
REVERBERATION (REVERB)
Initial setting: midpoint
Before sound reaches our ears, it is reflected
(reverberated) many times between he left and right
walls, ceiling, and floor. In a large room, sound takes more
time to bounce from one surface to another than in a
smaller room. This parameter lets you control the spacing
of the early reflections to simulate a sonically larger (L) or
smaller (S) room.
• The reverberation can be adjusted ±8 from S (small. -8)
to L (large, +8) in 17 steps.
• The midpoint (0) designates a standard room with no
adjustment.
LFE (Low Frequency Effect) MIX LEVEL (LFE MIX)
Initial setting ; 0 dB
This parameter lets you attenuate the level of the LFE
(Low Frequency Effect) channel output from the sub
woofer without effecting the level of the bass frequencies
sent to the sub woofer from the front, center or rear
channels via the Dolby Digital (AC-3) bass redirection
circuitry.
• The level can be adjusted in 1 dB steps from -20 dB to
0 dB (line level). 0 dB outputs the full LFE signal at the
mix level determined by the recording engineer.
• Selecting MUTING mutes the sound of the LFE channel
from the sub woofer. However, the low frequency
sounds of the front, center, or rear speakers are output
from the sub woofer according to the settings made for
each speaker in the speaker setup (page 14).
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