MSP 3400C
PRELIMINARY DATA SHEET
7.1.5. Loudness Loudspeaker and Headphone
Channel
7.1.6. Spatial Effects Loudspeaker Channel
Spatial effect strength
loudspeaker channel
0005
H
hex
Loudness
loudspeaker
0004
H
H
hex
hex
Enlargement 100%
Enlargement 50%
0111 1111
0011 1111
7F
3F
hex
hex
Loudness
headphone
0033
+17 dB
+16 dB
0100 0100
0100 0000
44
40
Enlargement 1.5%
Effect off
0000 0001
01
00
hex
hex
0000 0000
RESET
hex
hex
+1 dB
0 dB
0000 0100
04
00
hex
Reduction 1.5%
Reduction 50%
1111 1111
1100 0000
1000 0000
FF
C0
hex
hex
hex
0000 0000
RESET
hex
Reduction 100%
80
Spatial Effect Mode
0005
[7:4]
hex
Mode Loudness
loudspeaker
0004
0033
L
hex
Stereo Basewidth En-
largement (SBE) and
Pseudo Stereo Effect
(PSE). (Mode A)
0000
RESET
0000
0
hex
hex
Mode Loudness
headphone
L
hex
0
Normal (constant
volume at 1 kHz)
0000 0000
RESET
00
hex
hex
Stereo Basewidth En-
largement (SBE) only.
(Mode B)
0010
2
hex
Super Bass (constant
volume at 2 kHz)
0000 0100
04
Spatial Effect Cus-
tomize Coefficient
0005
[3:0]
hex
max high pass gain
0000
0
hex
Loudnessincreasesthevolumeoflowandhighfrequen-
cy signals, while keeping the amplitude of the 1 kHz ref-
erence frequency constant. The intended loudness has
to be set according to the actual volume setting. Be-
cause loudness introduces gain, it is not recommended
to set loudness to a value that ,in conjunction with vol-
ume, would result in an overall positive gain.
RESET
0010
0100
0110
2/3 high pass gain
1/3 high pass gain
min high pass gain
automatic
2
hex
4
hex
6
hex
8
hex
1000
By means of ‘Mode Loudness’, the corner frequency for
bass amplification can be set to two different values. In
Super Bass mode, the corner frequency is shifted up.
The point of constant volume is shifted from 1 kHz to
2 kHz.
There are several spatial effect modes available:
Mode A (low byte = 00 ) is compatible to the formerly
hex
used spatial effect. Here, the kind of spatial effect de-
pends on the source mode. If the incoming signal is in
mono mode, Pseudo Stereo Effect is active; for stereo
signals, Pseudo Stereo Effect and Stereo Basewidth
Enlargement is effective. The strength of the effect is
controllable by the upper byte. A negative value reduces
the stereo image. A rather strong spatial effect is recom-
mended for small TV sets where loudspeaker spacing is
rather close. For large screen TV sets, a more moderate
spatial effect is recommended. In mode A, even in case
of stereo input signals, Pseudo Stereo Effect is active,
which reduces the center image.
In Mode B, only Stereo Basewidth Enlargement is effec-
tive. For mono input signals, the Pseudo Stereo Effect
has to be switched on.
34
MICRONAS INTERMETALL
MICRONAS [ MICRONAS ]
