superequalizer

Apply 18 band equalizer.

The filter accepts the following options:

'1b'

Set 65Hz band gain.

'2b'

Set 92Hz band gain.

'3b'

Set 131Hz band gain.

'4b'

Set 185Hz band gain.

'5b'

Set 262Hz band gain.

'6b'

Set 370Hz band gain.

'7b'

Set 523Hz band gain.

'8b'

Set 740Hz band gain.

'9b'

Set 1047Hz band gain.

'10b'

Set 1480Hz band gain.

'11b'

Set 2093Hz band gain.

'12b'

Set 2960Hz band gain.

'13b'

Set 4186Hz band gain.

'14b'

Set 5920Hz band gain.

'15b'

Set 8372Hz band gain.

'16b'

Set 11840Hz band gain.

'17b'

Set 16744Hz band gain.

'18b'

Set 20000Hz band gain.