# Equalizer | Shortcuts Library

> Boost volume levels and apply EQ presets for audio and video files

## What this shortcut does

This shortcut does 2 things for audio and video files:
Apply audio equalizer presets
Boost audio volume if needed
The a-Shell mini app is required because it provides FFmpeg.
Instructions
Install a-Shell mini
Run this shortcut
Select a file to equalize
The shortcut will prompt for an equalizer preset.
Features
Over a dozen presets
10-band equalizer
Automatically boosts volume to optimum levels
Apply optional filters (see below)
Presets
Acoustic
Bass Booster
Cinematic
Classical
Deep
Electronic
Flat
Hip Hop
Latin
Mid Booster
Pop
Rock
Treble Booster
Vocals
Custom
Notes
The “Deep” preset is a favorite.
Try the “Classical” preset along with the “Extra Stereo” filter.
Easily edit existing presets in JSON format.
There are about 11 prompts for permissions.
Filters
Apply one or more optional filter effects to clean up speech or enhance stereo and more.
Filter Descriptions
Equalizer
:
Choose from a dozen EQ presets.
[firequalizer]
Dynamic Normalize
:
Even out the file’s volume with dynamic normalization.
[dynaudnorm]
Loud Normalize
:
Even out the file’s loudness with loudness normalization.
[loudnorm]
Stereo Widen
:
Insert a delay to make stereo sound wider.
[stereowiden]
Extra Stereo
:
Increase the stereo effect.
[extrastereo]
Speech Isolation
:
Isolate speech in challenging or noisy environments.
[lowpass] [highpass] [compand]
Speech Normalize
:
Even out the speech volume with speech normalization.
[speechnorm]
Noise Reduction
:
Mildly reduce noise in audio.
[afftdn]
Lower Pitch
:
Lower the audio’s pitch without changing the tempo.
[asetrate] [aresample] [atempo]
Raise Pitch
:
Raise the audio’s pitch without changing the tempo.
[asetrate] [aresample] [atempo]
Chorus
:
Apply a mild chorus effect
[chorus]
Reverb
:
Apply a mild reverb effect
[aecho]

## Compatibility

iPhone, iPad

## Required apps

a-Shell, a-Shell mini

[View this page](https://shortcutlibrary.app/shortcuts/equalizer)

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