DS-D98 recorder
8
- TASCAM DS-D98
Some units from other manufacturers output raw data
and some use SDIF-3. The DS-D98 allows you to
make the appropriate selection, depending on the
other units.
Note that if another unit also provides a choice of
either raw or SDIF-3, SDIF-3 is the recommended
choice, because of the low-cut filtering capabilities.
Output filter
The type of analog output filter employed by the DS-
D98 can be selected in this menu:
Either the “standard” filter (
Standard
), as
used in the SACD process, or the
Custom
TAS-
CAM filter can be selected.
The
Custom
filter provides better frequency
characteristics and its use is recommended for use in
recording or editing in order to maintain sonic qual-
ity throughout these stages of the project.
However, when actually performing the mastering
process, the
Standard
filter should be selected
in order to maintain compatibility with the standard.
In technical terms, the standard filter attenuates at
100 kHz by about 30 dB, and the custom filter by
about 20 dB.
Features of the DA-98HR in DSD mode
A number of menu items and options available have
no meaning in DSD mode. Although these menus
appear on the screen and it appears that values may
be set for the parameters, these settings actually do
not have any effect in DSD mode.
The numbers here refer to the paragraph numbers
describing these options in the DA-98HR manual.
Dithering
Dithering has no place when DSD is
selected, and therefore the dithering options (7.12,
“Dither”) have no relevance here.
Sine oscillator
The sine oscillator (7.9, “Sine
oscillator”) cannot be operated in DSD mode.
TDIF input word length
Since the TDIF inputs
are not used in DSD mode, the concept of TDIF input
word length (7.10.2, “Selecting input word length”)
is not appropriate here.
AES dual/fast selection
Since the AES/EBU
digital formats are not used in DSD mode, this selec-
tion (7.10.3, “Setting the high-frequency AES/EBU
I/O transfer mode”) is not appropriate here.
AES Cbit mode
The AES/EBU format is not used
in DSD mode, and therefore this option (7.10.4,
“Cbit mode”) is not meaningful.
Output word length
Since word length has no
meaning in DSD mode, this option (7.13, “Output
word length”) has no effect.
TDIF Ebit mode
Since TDIF format is not used in
DSD mode, this option is not meaningful here.
Mix input select
This option (5.4, “Mixdown
patchbay” is not available in DSD mode. In DSD
mode, track 1 is tied to channel 1 and track 2 is tied
to channel 2.
Mixdown
This option (5.4, “Mixdown patchbay”)
is not available in DSD mode.
METER UNIT
This rear panel connector cannot be
used in DSD mode.
Input patchbay
When using the
INPUT PATCH
key to perform input
patching on the DS-D98 in DSD mode, the situation
is slightly different from that in PCM mode.
The options available are
A
(analog inputs of the slot
card),
D
(digital inputs of the slot card) or
M
(muted).
Each individual input can be routed to either of the
two input channels, so the choices are:
See 6.3.3, “Selecting input sources” for full details of
how to perform input patching.
D S D
A n a l o g
O u t
F i l t r
S t a n d a r d
Channel 1
A1
,
A2
,
D1
,
D2
,
T1
,
M
Channel 2
A1
,
A2
,
D1
,
D2
,
T2
,
M
