Datasheet

11.14.1. High Pass Filter
The DAP has individual channel high pass filter that can be enabled and disabled. The filter cutoff
frequency is less than 1Hz.
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11.14.2. Dynamic Range Control
The dynamic range control(DRC) can be enabled in the digital playback path of AC101. It automatically
adjusts the wide volume gain to flatten volume level.
Figure 41 DRC Response Characteristic
The DRC supports the main feature below:
Figure 42 DRC Block and Register Control
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Adjustable threshold, offset, and compression levels
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Programmable energy coefficient, attack, and decay time constants
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Transparent compression: Compressors can attack fast enough to avoid apparent clipping before
engaging, and decay times can be set slow enough to avoid pumping.
 DRC parameter setting
Numbers formatted as N.M numbers means that there are N bits to the left of the decimal point including
the sign bit and M bits to the right of the decimal point. For example, Numbers formatted 3.24 means that
there are 3 bits at the left of the decimal point and 24 bits at the right decimal point.