Systems and methods for providing voice equalization are provided. At a user device, a determination is made as to whether the content license corresponds to particular unencrypted digital content. At each block visited during the traversing, a process determines whether there exists an improvement opportunity for each cell associated with the block. The BIST control unit tests the IP blocks by transferring the control data, a command signal, test pattern data, and test address signals to the BIST logic circuit through the system bus, and compresses and stores the test result data received through the system bus in the test mode.