[hana-code-insert name='Responsive Ad' /]
This filter stops Aliasing
frequencies by using a low pass brick wall filter (only lets in frequencies below threshold) to prevent frequencies above the threshold of human hearing (20-24kHz) that go over the Nyquist Frequency
. This then stops mis sampling of higher harmonics which would be introduced as aliasing distortion.
[hana-code-insert name='Search Encourage' /]