Creative 1820 用户手册

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4 - The PatchMix DSP Mixer
The Session
30
Creative Professional
The System Settings include the following:
E
 Note: if set to 
“External” without an 
external clock present, 
PatchMix DSP defaults to 
the internal 48kHz clock 
rate.
Using External Clock
E
Note: The maximum 
supported sample rate for 
S/PDIF is 96kHz.
Whenever you are using any digital I/O such as ADAT or S/PDIF, one of the digital 
devices MUST supply the master clock to the others. This master clock runs at the system 
sample rate (44.1k, 48k, 88.2k, 96k, 176.4k or 192 k) and can be distributed using a 
dedicated cable (word clock) or embedded into a data stream such as S/PDIF or 
ADAT
. Common symptoms of unsynced digital audio include, random clicks or pops 
in the audio or failure of the digital stream to be recognized. Always check for the 
presence of the “LOCKED” indicator whenever you are using a digital interface.
If an External Clock is interrupted or switched after the Session has been created (except 
between 44.1k <-> 48k), the “LOCKED” indicator will be extinguished and PatchMix 
will attempt to receive the external data. The two units are NOT sample locked however, 
and you should correct this condition to avoid intermittent clicks in the audio.
MIDI Settings
E
The SMPTE Input will 
not function and the 
Sync Card control panel 
will not be updated 
when Dock MIDI 2 In is 
selected.
 
Word Clock and SMPTE 
Out 
will operate with 
Dock MIDI 2 selected.
This option allows you to use either the MIDI In jack on the rear of the AudioDock or 
the Sync Card MIDI jack as a MTC Output. (The MTC Out only transmits MTC.)
• Internal/External Clock
Selects between internal or external word clock source 
as the master clock source for the system
• Sample Rate
Selects the sample rate when using internal clock.
Your choices are: 44.1kHz, 48kHz, 88.2 kHz, 96kHz, 
176.4kHz, 192kHz.
• External Clock Source 
    (ext. clock only)
Select from: ADAT, S/PDIF, or Word Clock (Sync card 
only) as an external sample clock source.
• Dock MIDI 2 In
Selects the rear MIDI Input on the AudioDock as MIDI 2.
• Sync Card Enabled
Selects the Sync Card functions. This selection disables 
MIDI 2 In on the rear panel of the AudioDock. MIDI 2 
Out on the rear panel of the AudioDock duplicates MIDI 
1 Out in this mode.