- Texas AIP Consumer Audio User's Guide

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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

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 the

DAC.

• 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 gain

control 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 strong

or excessively large sound data input.

Expansion means to boost weak or low input data in order to adjust the moderate amplitude level for

recording.

Figure 3-12. ALC Compression and Expansion Characteristics

Set-Up Guide30 SBAU127 – July 2007

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