Yamaha DSP-1 - Program Specific Parameters

E PARAMETER OF PROGRAM NO. 1
TO NO. 15 IN THE ACOUSTIC/
SURROUND MODE
ə ROOM SIZE (0.1 — 8.0)
This parameter simulates the extent of the listening
room. The time pitch of the primary reflection can
be varied.
The more the value is increased, the greater the
effect of extent such as in a room with a large
extent is obtained.
Original sound
of source
Primary reflection
coe eer".
Level Level Level
@ LIVENESS (0 — 10) |
This parameter determines the attenuation
characteristic of the primary reflections. The more
the value increased, the more live characteristics
one obtained (more reflections), and the more the
value is decreased, the more of a dead
characteristic is obtained (less reflections).
Level Original sound
of source
Time
@ INIT DLY (initial Delay: 5 ms — 150 ms)
_ This determines the time-difference of starting time
between original sound and the reflection. It is the
important factor to determine the positioning
relationship between the original source sound and
the sound field.
For example, in the CHURCH program, when the
INIT DLY is varied between 5 ms — 150 ms, the
source original sound, sense of distance for the
surrounding wall and the sense of the extent of the
ambience space are changed together. The
optimum point differs in the source, however, the
sound image on the stage can be controlled by fine
adjustment.
HPF (High Pass Filter: THRU, 32 Hz — 1.0 kHz)
The lower frequency can be cut by 6 dB/oct with
this high pass filter. 32-step frequencies are
available from THRU position to 1.0 kHz position.
Effective when the low frequency is emphasized
and the sound is not clear.
Level
THRU
32 Hz, 35 Hz, 40 Hz..... 1.0 kHz: 32 steps
Frequency
Level
DSP1
= LPF (Low Pass Filter: 1.0 kHz — 16 kHz, THRU)
The higher frequency can be cut by 6 dB/oct with
this low pass filter. 26-step frequency points are
available from 1.0 kHz to THRU position. .
Level
THRU
1.0 kHz..... 12 kHz, 14 kHz, 16 kHz: 26 steps
Frequency
® REV TIME (Reverb Time: 0.3 s — 99.0 s)
This determines the time required for the rear
reverberation at the middle frequency range (1
kHz) to be attenuated to the -60 dB (1/1000). It
shows the length of the reverberation.
Original sound of source
a Primary reflection
rmm
—60 dB
_ Rear
reverberation
Time
REV TIME
24