Alesis Studio Interface MasterControl Manual De Referência

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40 
 
 DIRECT MONITORING 
 
The MasterControl contains a hardware-based, DSP mixer which enables you to route the inputs to the 
outputs directly, bypassing any latencies associated with sending the audio to and from the computer.  
This hardware-based routing provides the minimum possible latency – only the time required for audio to 
be converted between analog and digital formats and then back again to analog.  This time is essentially 
imperceptible (just a few milliseconds at 44.1kHz, half of that at 88.2kHz, and a quarter of that at 
176.4kHz).     
 
„  When to Use Direct Monitoring 
 
 
When you are recording simpler projects that put less strain on your computer, you can generally 
choose lower buffer settings in the Alesis Firewire control panel.  When your buffer sizes are low 
enough, you can use the input monitoring feature of your DAW recorder, and the latency (delay) 
experienced by your performers will be very slight.  Using such low buffer settings, you may find use of 
the MasterControl’s direct monitoring feature to be unnecessary. 
 
However, when you add more tracks and plug-ins, you will need to increase your buffer sizes in order for 
your system to keep operating smoothly.  At this point, it makes sense to mute the input monitoring on 
your DAW and use the MasterControl’s digital mixer. 
 
„  Configuring the GLOBAL menus 
 
 
In the Global menus, choose whether you want to hear the direct signal via the MasterControl’s MON / 
LINE OUTPUT pairs 1/2, 3/4, and/or 5/6.   
 
„  Creating a Direct Monitoring Mix 
 
 
Press the DIRECT MONITOR button on the left side of the MasterControl.  The button will light, and the 
faders will snap to their Direct Monitoring positions.  Press the BANK LEFT (<) and BANK RIGHT (>) 
button to access the following outputs: 
 
y
 
Analog Outputs (Tracks 1-8) 
y
 
ADAT1 (Tracks 1-8) 
y
 
ADAT2 (Tracks 1-8) or Optical S/PDIF (Tracks 1-2) 
y
 
Coaxial S/PDIF (Tracks 1-2)   
 
In each bank, adjust the volume using the faders.  Adjust the pan position using the knobs.  Press MUTE 
or SOLO on the Master Control’s surface to mute or solo individual tracks.  Press SELECT to center any 
channel’s pan position. 
 
Raise or lower the overall Direct Monitoring mix with the DIRECT 
MON LEVEL knob.   
 
Whenever you exit the Direct Monitoring Mode, your settings (fader 
placement, pan position, and the DIRECT MON LEVEL amount) will 
be saved automatically. 
 
„  Special Considerations at Double- and Quad-Speed Sample Rates 
At dual rates – 88.2kHz and 96kHz – the first optical port’s inputs are 
halved, from eight ADAT channels to four channels.  The second 
optical port only operates as an optical S/PDIF input at these rates; 
ADAT is disabled.  To avoid hearing glitches in the input audio 
caused by data mismatches, disconnect any ADAT devices from the 
second optical port at 88.2kHz and 96kHz. 
 
At quad rates – 176.4kHz and 192kHz – both the digital inputs and talkback become unavailable.  At 
these rates, direct monitoring is only available to outputs 1/2, not outputs 3/4 and 5/6. 
You can adjust all eight faders 
in the various banks, 
regardless of the sample rate.  
The settings you assign will be 
used when you use lower 
sample rates. 
Note that the levels set here 
will be different from the levels 
returned from your DAW, if you 
have your DAW’s direct 
monitoring (echo) feature 
enabled.