Denon AVC2530 Bedienungsanleitung Seite 19

. PARAMETER button
Use this button to select the parameter.
'The normal procedure for setting parameters is to first select the pater with the PARAMETER button, then use the
[+] and [—] buttons to set the selected parameter. Remote control unit
if no button is pressed for approximately 15 seconds, the parameter setting mode is automatically cancelled.
(1) Initial delay
This parameter sets the distance (delay time) from the sound source to the reflecting walls.
The larger the vaiue, the further away the sound source seems.
MFD display
[=]
0 ~ 50msec
(10msec. STEP)
(2) Room size
This parameter sets the time interval between the initial reflected sounds.
The larger the value, the larger the sound field seems to be, and the greater the sense of expansion.
MFD display
E]
4 ~ 20
(2 STEP)
(3) Effect level
This parameter adjusts the level of the reflected sound.
The larger the value, the greater the level of the reflected sound.
MFD display
[=]
0 ~ 15
(4) Surround signal
This parameter is only for the WIDE SCREEN and LIVE modes.
Select the surround input signal.
MFD display
E
L-R -— L+R
NOTE:
The sound is interrupted momentarily when the delay, initial delay, room size and effect level parameters are
changed, but this is normal. .
For some playback sources, noise may be generated if the DSP parameters are changed.
Technical Advice
1. "Sound field"
=~» Continued
The sounds we hear normally or in concert halls, etc., does not only consist of sounds heard directly from the sound
source (direct sound). Sound disperses in all directions and is reflect repeatedly off the walls and ceilings, and these
reflected sounds reach our ears with a certain delay.
Reflected sounds can be classified into two main categories. The first is initial reflected sound, and this is sound which
we hear after it has reflected once or a few times off of walls. This creates an echo-like effect, but as the time difference
with respect to the direct sound is short, we do not perceive this initial reflected sound as a distinct sound. Rather, it has
the effect of increasing the sense of expansion or depth of the direct sound. The second category of reflected sound is
called reverberations. These are sounds which reach our ears after an elaborate series of reflections. These
reverberations are responsible for the richness of the overall sound. .
These different sounds can be graphed as follows:
Level
Initial reflected sound
Reverberations
| nie
' Time
Direct sound
The above is only one example. Actually the reflected sound takes on a particular form depending on the environment
surrounding the sound source, that is such conditions as the size of the room, the distance to the walls, the shape and
material of the walls, and our position within the room. This reflected sound combines with the direct sound, and we
recognize as it as the particular sound to the listening environment. This particular sound is called the sound field.
Normally we hear it without paying special attention to it.
The AVC-2530 uses an advanced DSP (digital signal processor) to create various sound fields.
. DSP sound fields
We now have access to many types of music and movie sources, including LDs, CD, videos, satellite broadcasts, and so
on. In most cases, some sort of sound field has already been added to these sound sources. For live recordings, of
course, but also for studio recordings, the reflected sounds are recorded along with the direct sound. But when we listen
to them, we sometimes feel we would like a richer sound, or for example that we would like to recreate the exciting
sense of presence at a live concert. By adding the DSP sound fields to the sources, we can create a more real sound with
greater atmosphere.
The sound fields created by the DSP are created based on the sound source. Because of this, some adjustments are
necessary to achieve an effect which fits the source, including the sound field already included in the source. The
AVC-2530 offers various parameters so that the user can make these adjustments. Values have already been preset for
the different parameters in the various modes upon shipment from the factory, they can be adjusted to create your own
original sound fields.
The parameters which the AVC-2530 includes for adjusting the sound field are as follows:
WM Initial delay
@Room size
@ Effect level
@ Effect
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