Audio Power Amplifier User's Guide

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4.2.1 All Channel Shutdown
4.2.2 Advanced Features : EQ and DRC
4.2.2.1 EQ Loading and Viewing
4.2.2.2 DRC Coefficient Loading
Using the EVM Software
Figure 5. Volume Tab
System comes up with all channel shut down asserted.
To exit All Channel Shutdown, select Setup Tab, unselect All Channel Shutdown.
EQ and DRC can be designed in ALE (Automatic Loudspeaker Equalization tool).See the EQ/DRC Tool
Installation section that appears later in this document. The filters designed in ALE can be saved into a
file. Load the ALE output using File -> Load the ALE File and select the ALE output file . Select Autobank
switch ON in the EQ tab. The EQ and DRC parameters can be viewed by selecting the EQ viewer or DRC
tabs. Coefficients are loaded into DAP in the autobank switch only when a legitimate sample rate is
applied. EQ and DRC are loaded before the step described in Section 4.2.1 .
EQ coefficients can be generated using ALE. (See ALE User's Guide.) Once EQ coefficients are
generated, they can be loaded into the part using File → Load ALE using the TAS570x GUI.
DRC coefficients can be generated using ALE and can be loaded using File → Load ALE. Normally, both
EQ and DRC coefficients are created and saved as a single file from ALE. DRC1 (satellite channels) and
DRC2 (subchannel) can be enabled and disabled using the toggle button in this tab.
8 TAS5601 Digital Power Amplifier With MC5601 Modulator Kit SLOU219 – February 2008
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