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9.99 kHz:

8.00 kHz:

6.00 kHz:

4.50 kHz:

2.40 kHz:

1.80 kHz:

1.00 kHz:

0.50 kHz:

0.25 kHz:

0.10 kHz:

Now let's turn on sharp filtering (set user option 32 to 0 instead of 1) and see what happens:

1.00 kHz Sharp: