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@ LEVEL keys (DOWN, UP)
Used to adjust the volume level of the effect sound.
è DOWN: When this key pressed, the effect sound is
decreased.
@ UP: When this key is pressed, the effect sound is
increased. When one of the LEVEL keys is pressed,
the indication shown below is displayed on the
- PROGRAM display as the reference for adjustment.
|
EFFEOI
LEVEL
BEER
Be
ri,
HERRE
|00%
=: Cursor (Number of lighting cursor shows the volume level of
the effect sound.)
%: Percent (Shows the effect sound level in figures.)
Note: After adjusting the parameter value or
level/balance of the effect sound, recalling the
other program resets the parameter values to
initial settings. To keep the adjusted value,
store the program in the user program area.
(See page 21.)
In a concert hall, the extent or shape, image
localization, and echoicness or anechoicness can be
appreciated even if the eyes are closed.
This is because sound reflections from all directions
are heard besides the direct sound from stage
(instruments or voices) simultaneously.
Our auditory sense can recognize the extent of the
hall by the time difference between the direct sound
and the reflections, the shape of the hall by the
directions of the reflections, and the echoic or
anechoic characteristic by the attenuations of the
sound.
:
Therefore, simulating the time difference or direction
of the reflections and the attenuating time may
reproduce the sound field of an actual concert hall.
As sound produced by performers is reflected by all
objects in the hail, it is heard not only from the direct
front but also from the sides, rear or ceiling.
LSh-—1
These reflections cannot be reproduced by the
conventional 2-channel (2-speaker) system, but
require extra speakers to reproduce sound reflection
(this is called the sub speaker). The DSP-1 is
designed to reproduce the realistic sound field
experienced in a concert hall in a normal listening
room by simulating sound reflection from all directions
based on actual measured data, using extra speakers
surrounding the listener. Furthermore, the digital signal
processing circuit adopted in this unit can be used to
produce special sound effects, such as combining
phase-difference signals, changing pitch or changing
imaging position periodically.
.
16
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