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3.2.3.4 ALC (Automatic Level Control)
OutputAmplitude
InputAmplitude
Compression
( 2dB, 6dB, 12dB)---
Expansion
(0dB,+6dB,+14dB,+24dB)
0dB
0dB
Digital Attenuation (ATP) Options
Digital Attenuation (ATP) Options
Move the L-ch and R-ch sliders to adjust the gain of the incoming digital signals prior to conversion by theDAC.
•The L-ch slider adjusts the DAC digital attenuator level
•The R-ch slider controls the DAC digital attenuator level
•Select the output channel to be either stereo or mono
•The digital boost option enables a gain control of 0dB, +6dB, +12dB, or +18dB for the DAC digital input
Figure 3-11 shows the Automatic Level Control (ALC) function menu tab.
Figure 3-11. ALC Function Menu Tab
Auto Level Control (Record) Options
Select Recovery time and Attack time using the respective drop-down menu and corresponding gaincontrol for each option to use the automatic level control function.
ALC compression and expansion characteristics are shown in Figure 3-12 .Compression is defined as avoiding degradation of sound quality by saturation when there are strongor excessively large sound data input.Expansion means to boost weak or low input data in order to adjust the moderate amplitude level forrecording.
Figure 3-12. ALC Compression and Expansion Characteristics
Set-Up Guide30 SBAU127 – July 2007Submit Documentation Feedback