Phones; Analog Input/Output; Aes/Ebu Input/Output; Adat Optical Input/Output - MOTU V4HD User Manual

The Default Stereo Input and Default Stereo Output
settings in MOTU Audio Setup (Figure 8-1 on
page 72) let you specify the stereo input and output
on the V4HD to be used when it is chosen as the
audio I/O device in the system preferences.

Phones

The Phones setting (Figure 8-1) lets you choose
what you will hear from the headphone jack. For
example, choose Analog 1-2 if you'd like the
headphone output to match the analog outputs 1
and 2.

Analog Input/Output

The Analog Input/Output menus (Figure 8-1) let
you enable or disable the 8-channel analog bank.
Enable a bank to make it available to Final Cut Pro
or the V4HD's CueMix monitor mixer for audio
input or output. Disable it if you are not using it to
conserve FireWire bus bandwidth for video and
other data. Note that input and output can be
enabled or disabled independently.

AES/EBU Input/Output

The AES/EBU Input/Output menus (Figure 8-1) let
you enable or disable the 8-channel bank of AES/
EBU digital audio I/O, as described above for the
analog banks.

ADAT Optical Input/Output

The ADAT Input/Output menus (Figure 8-1) let
you enable or disable the 8-channel bank of ADAT
optical digital audio I/O, as described above for the
analog banks.

SDI Input and SDI/HDMI Output

These two menus (Figure 8-1) let you enable or
disable the 8-channel bank of embedded digital
audio I/O, as described above for the analog banks.

Sample Rate Convert

The Sample Rate Convert menu (Figure 8-1) lets
you control the V4HD's sample rate conversion.
Sample rate conversion can be applied to any
8-channel digital input or output bank, as
M O T U A U D I O S E T U P
explained below. The options in the menu change,
depending on the V4HD's current Sample Rate
setting (page 73). For example, if the V4HD is
currently set to 192 kHz, you'll see "x 4" and "÷ 4"
settings that don't apply to the lower sample rates.
When rate conversion is applied to a bank, the
bank's rate conversion LED in the AUDIO STATUS
section of the V4HD front panel (src) indicate that
rate conversion is occurring.
Figure 8-3: The Sample Rate Convert menu gives you access to a
variety of input and output clock options.
None
No sample rate conversion occurs. Digital input
and output match the sample rate of the V4HD's
system clock.
AES/EBU In
The AES/EBU input locks to the sample rate of the
input signal (whatever it happens to be) and
converts it to the V4HD system clock rate.
x 2 / ÷ 2
Choose one of these sample rate conversion
options when the rate for the chosen digital I/O
bank needs to be twice the V4HD system clock rate
or half the system clock rate. Either way, the digital
I/O bank remains resolved to the V4HD system
clock. For further details about this option, see
"Syncing digital audio devices" on page 29.
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