Datasheet

Program Description
3-21
Operation
Figure 3−10. Bass Boost Filter Screen
Different filter coefficients can be loaded for left and right channels, though
usually these are set the same. Five preconfigured filters are selectable using
the drop-down list box of this screen. Selecting one of these updates the
coefficients and causes the graph of the filter response to update. However,
nothing is loaded into the TSC2100 until the Download button is pressed.
If changes are made to coefficient values directly, the response can be viewed
on the graph by pressing the View Response button. It is recommended that
you view the response before downloading values to the TSC2100, as some
values can cause clipping or oscillation of the filter. The filter equation is
described in the TSC2100 data sheet.
Checking the Bass Boost Filter box enables the filter.
There is another digital filter, the de-emphasis filter, provided by the TSC2100
for the audio DAC. Checking the Deemphasis Filter On box enables the filter.
Moreover, to reduce the TSC2100’s power-up pop noise, two pop-reduction
functions were added to the TSC2100 and are selectable on this screen. They
are the audio output driver pop-reduction and the audio DAC pop-reduction.
Refer to the data sheet for the details of the pop-reduction features.