RME Audio Babyface Pro, Руководство пользователя

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User's Guide Babyface Pro © RME 21
9.6 Analog Recording
For recordings via the analog inputs the corresponding record device has to be chosen (Baby-
face Pro Analog (x+x)).
Channels 1 and 2 of the Babyface Pro have digitally controlled
microphone preamps of the highest quality. The digital control offers a
gain setting in steps of 1 dB within a range of 0 dB to +65 dB. The
configuration is done either directly at the unit via the rotary encoder, or
via the Settings panel of the input channels 1 and 2 in TotalMix, with the
knob
Gain
. The current gain is displayed in dB beside the knob.
Additionally a PAD can attenuate the input signal by 11 dB, to prevent
overloads by hard driven microphones or high level line signals. This
useful feature extends the gain range and increases the maximum input
level from +8 dBu up to +19 dBu at the XLR input.
Above the knob Gain the inputs can be set separately to provide
48V
phantom power at the XLR sockets. Phantom power is required for
condenser microphones.
Input channels 3 and 4 are found as TS jacks on the right side of the Babyface Pro. These Hi-Z
universal inputs
have an input impedance of 470 kOhm. The input gain is controlled and per-
formed digitally and limited to 9 dB. An additional hardware-based reference level optimizes the
signal to noise ratio. Choices are +4 dBu and -10 dBV.
It often makes sense to monitor the input signal or send it directly to the output. This can be
done at zero latency using
TotalMix FX
(see chapter 21).
An
automated
control of real-time monitoring can be achieved by Steinberg’s ASIO protocol
with RME’s ASIO drivers and any ASIO 2.0 compatible program. When 'ASIO Direct Monitoring'
has been switched on, the input signal is routed in real-time to the output whenever a recording
is started (punch-in).
9.7 Digital Recording
Unlike analog soundcards which produce empty wave files (or noise) when no input signal is
present, digital interfaces always need a valid input signal to start recording.
Taking this into account, RME added a
comprehensive I/O signal status display to
the Babyface Pro, showing sample frequency,
lock and sync status in the Settings dialog,
and a status LED directly at the unit.
The sample frequency shown in the Settings
dialog is useful as a quick display of the
current configuration of the unit and the
connected external equipment. If no sample
frequency is recognized, it will read ‘No Lock’.
This way, configuring any suitable audio application for digital recording is simple. After connec-
tion the Babyface Pro displays the current and external sample frequency. This parameter can
then be changed in the application’s audio attributes (or similar) dialog.