Filter Hz

Hi-Cut, (lowpass) filtering sets the high (treble) frequency limit.

Auto, (slider at the top), is the default and is recommended to achieve the best balance between quality and file size.

If a Hi-Cut frequency is specified, you are setting the maximum high frequency allowed, anything above that will be cut.

None, (slider at the bottom), allows all frequencies but can be a wasteful use of encoding bits for frequencies that may be too high, inaudible. Also, can cause noise at lower bitrates.

Lo-Cut, (highpass) filtering is the low (bass) frequency limit.

None, (slider at the bottom), is the default and is recommended.

If a Lo-Cut frequency is specified, you are setting the minimum low frequency allowed, anything below that will be cut.