SuperEQ

SuperEq(clip, string filename)
SuperEq(clip, float band1 [, float band2, ..., float band18])

Parameter:

filename	The foobar2k equalizer preset file to apply.
band1-band18	Allows to set all bands within your script (in dB).

Shibatch Super Equalizer is a graphic and parametric equalizer plugin for winamp. This plugin uses 16383th order FIR filter with FFT algorithm. Its equalization is very precise. Equalization setting can be done for each channel separately. SuperEQ is originally written by Naoki Shibata.

SuperEQ can accept a foobar2k equalizer setting (.feq) file. The equalizer can be found in foobar's DSPManager, and settings are adjusted and saved from there as well.

An .feq file is a text file with a number on each line. Each value controls the amplification in decibels of each of 18 frequency bands. The boundaries between bands lie on the following frequencies:

Band #	Frequency
1	65 Hz
2	92 Hz
3	131 Hz
4	185 Hz
5	262 Hz
6	370 Hz
7	523 Hz
8	740 Hz
9	1046 Hz
10	1480 Hz
11	2093 Hz
12	2960 Hz
13	4186 Hz
14	5920 Hz
15	8372 Hz
16	11839 Hz
17	16744 Hz

(adapted from avisynth/src/audio/supereq.h)

For example, the first line of the file controls 0 to 65 Hz, and the sixth controls 262 to 370 Hz.

These frequencies are the frequencies of C and F# in the modern equal tempered scales. The lowest is the C two octaves below middle C.

Preset files can be found in your \AviSynth25\Examples folder (Equalizer Presets.zip), or may be downloaded by searching the Web for "foobar2000 presets."

Example 1: Apply "Loudness.feq" filter from a Presets file

SuperEq("C:\Equalizer Presets\Loudness.feq")

In v2.60, a custom band setting (band1, band2, ...) is added to allow all 18 bands to be set within your script (instead of within your preset file). The values should be specified in decibels (float).

Example 2: Boost midrange (speech) using band arguments

ConvertAudioToFloat  
SuperEQ(
\   0,  [*    65 *]
\   0,  [*    92 *]
\   0,  [*   131 *]
\   0,  [*   185 *]
\   0,  [*   262 *]
\   0,  [*   370 *]
\   0,  [*   523 *]
\   5,  [*   740 *]
\  10,  [*  1046 *]
\  10,  [*  1480 *]
\  10,  [*  2093 *]
\   5,  [*  2960 *]
\   0,  [*  4186 *]
\   0,  [*  5920 *]
\   0,  [*  8372 *]
\   0,  [* 11839 *]
\   0   [* 16744 *]
\ )
ConvertAudioTo16bit

Requirements:

This plugin is optimized for processors which have cache equal to or greater than 128k bytes (16383*2*sizeof(float) = 128k). This plugin won't work efficiently with K6 series processors.

Changes:

v2.60	Added custom band setting to allow all 16 bands to be set from script.
v2.54	Initial Release.

Some parts of SuperEQ are:
Copyright © Naoki Shibata.

Other parts are:
Copyright © 2001-2003, Peter Pawlowski All rights reserved.