360 Systems DigiCart/E Specification page 7

Questions and Answers,
Is there a separate AES/EBU
reference input?
A separate AES-11 sync input is provided on
the rear panel.
What sample rates does
DigiCart/E operate at?
DigiCart/E can record and play at standard
sample rates of 44.1K, 48K, 88.2K and 96K.
DigiCart/E permits different sample rates to
co-exist on its hard drives. It is equally adept
at playing different rates, even when back-to-
back within a play list
What digital audio word widths
does DigiCart/E operate at?
Files may be created in either 16-bit or 24-bit
word widths. The internal A/D converter is
24-bits, but can also produce high-quality 16-
bit files. Digital audio inputs of any word
length are acceptable, and can be converted to
16 or 24-bit lengths before being recorded. All
conversions take place in real-time.
Does DigiCart/E contain a
sample rate converter?
A 24-bit sample rate converter (SRC) is
available on AES/EBU digital inputs and
outputs. It may be used to convert any input
sample rate to a preferred recording standard.
For example, a compact disc (always a 44.1K
audio stream) can be easily converted to 48K
and recorded as a 48K file within DigiCart/E.
The sample rate converter can also be used to
provide an AES/EBU digital output at a rate
different than that used to record the file. For
example, a music master may exist on hard
disk as a 24/96 file, but can still be played out
(in real time) as a 48K, 16-bit audio stream —
or any other sample rate.
DigiCart/E's file flexibility permits audio to be
stored at its "native" sample rate and word
size, and then converted to a new standard on
a project-by-project basis.
cont.
Can digital audio word lengths
be changed?
24-bit recordings may be dithered to 16-bit
for output, and 16-bit input data streams may
be recorded as either 16 or 24-bit words.
Is the Dolby AC-2 data format
from earlier model DigiCarts
available?
Dolby AC-2 processing is carried forward
from the earlier DigiCart II to maintain file
compatibility. It is possible (though by no
means required) to record new files in that
format, and also to import and play DigiCart
II files in Dolby AC-2 format.
Can DigiCart/E accept a
feed from program distribution
for recording?
Each DigiCart/E recorder includes both stereo
line-level analog inputs and an AES/EBU
digital input. Either may receive a feed from a
control room output. Long-term logging is
possible if desired, as the maximum file length
is in excess of 32 hours.
What audio file formats does
DigiCart/E record and play?
• Linear PCM in 16-bit or 24-bit WAV
(or BWF) format
• Linear PCM in 16-bit DigiCart II format
• Dolby AC-2 as in DigiCart II
Can a DigiCart/E record directly
to the file server?
All DigiCart/E recorders can record directly to
the network file server, or to their internal
hard drive.
What editing operations are
available?
Editing tools include head-trim, tail-trim,
and pre-roll time. Edit points may be rapidly
located with the weighted jog wheel, or by
typing a desired location. Edits are pointers
(for use within the DigiCart product family)
and are non-destructive. Other DSP-based
editing features are fade-in, fade-out, and
gain-adjustment.
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