Marantz PS-17 - Manual (Page 29)

19
ENGLISH
The same bypass (BP) mode as with conventional headphones
playback can also be selected.
The following surround sound effects can be selected while the Dolby
Headphone function is operating:
AUTO, DOLBY SURR., SRS, STEREO
OPERATION
1. Turn the VOLUME control knob counterclockwise to the lowest
setting.
2. Insert the plug on your headphones into the headphones jack.
3. Select the desired Dolby Headphone's room simulation pattern
by pressing the
button on the unit's front panel.
Alternatively, it can be selected by pressing the Dolby H button
on the remote control unit.
Each time the button is pressed, the mode is selected in the
following sequence: BP fi DH1 fi DH2 fi DH3 fi BP.
4. Select the desired surround mode.
Press the surround mode button on the unit's front panel or on the
remote control unit.
AUTO,
2, SRS or STEREO can be selected.
5. Turn the VOLUME control knob clockwise to set the desired
volume level.
6. If distortion or other problems arise during LFE signal playback
due to inadequate reproduction of the bass which is the case with
some headphones, adjust by selecting -10dB or OFF for LFE
LEVEL in the SURROUND MODE item on the OSD menu.
Notes:
The Dolby Headphone function will not work when 96 kHz PCM digital
signals are input.
In this case, first supply the analog output signals of the DVD player
to the unit, and then activate the Dolby Headphone function.
The Dolby Headphone function will not work for 6-channel input
signals.
The Dolby Headphone function will not work when SOURCE DIRECT
has been selected while the headphones are being used.
Although this function does not require the use of a special pair of
headphones, its effect will differ somewhat depending on the type of
headphones used.
MAX MIN
TEMP
PHONO
- TREBLE BASS PHONES
INPUT SELECTOR VOLUME
STANDBY
CDR/MD
TEMP
-DIRECT-
A/D POEWER ON/OFF
AV AMPLIFIER PS-17SA
SOURCE
+ - +
LD TV
DVD
TAPE
CD
VCR1
VCR2 DSS/
6CH INPUT PURE
NIGHT
6.1 AUTO
5chSTEREO STEREO
SRS
LISTENING THROUGH HEAD-
PHONES
This unit features a "Dolby Headphone" function.
The Dolby Headphone is ideal for users who do not have the space to
install five speakers in their room and for users who want to enjoy
movies or music at high volume levels late at night but cannot do so.
They were developed to enable users to experience the 3-
dimensional acoustics of multi-channel or stereo channel sound while
wearing headphones.
EFFECTS OF DOLBY HEADPHONE
Usually when stereo sound is heard through headphones, the sound
is not localized somewhere in front of the listener's eyes as it does
with speakers: instead, all the sound is localized inside the listener's
head which feels unnatural to the listener.
When sound is heard using the Dolby Headphone function, however,
it is heard as if it is being reproduced from the speakers installed in
the room.
Normally, the sound delivered by the left speaker is heard in both the
listener's left and right ears, and the differences in level, time and
characteristics of the sound cause the listener to perceive a
directionality. Furthermore, in addition to the direct sound, the
indirect sound produced by reflection in the room also reaches the
listener's ears.
Listening to sound with headphones means that the listener hears the
left sound directly through his or her left ear only so that no sound
image is heard in front.
The Dolby Headphone provides virtual room simulation and the
resulting acoustic characteristics are overlaid onto, and incorporated
into, the left and right headphone signals. For instance, what
happens to the left-channel sound mentioned above is that its
reverberation components and components of the sound reflected
from the room are combined with the left and right speaker (channel)
sound and output to the left and right headphones. Since the listener
hears in both ears components with the same quality as when
listening to sound through speakers, he or she feels as if the sound
source were located in front.
This kind of processing necessitates a vast number of complex
operations but it has been achieved by improving the performance of
the DSP. Whereas stereotypical systems available to date had to
optimize the characteristics for each individual listener, the most
salient feature of the Dolby Headphone is that they remain essentially
unaffected by the listener or type of headphones (even if some small
variations exist due to differences in sensitivity and characteristics
balance).
The room simulation pattern that provides this effect can be selected
from the following three types.
DH1 : The size of a typical living room space is simulated.
DH2 : The expansiveness of a structure as large as a music hall is
simulated.
DH3 : A large space such as that found in a movie theater is
simulated.
Headphones plug