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Overview of audio effects in Audio Hijack

Audio Effects from Rogue Amoeba

Audio Hijack is often used to host third-party audio unit effects, but it also features a selection of our own audio effects, created in-house by Rogue Amoeba.

This page provides a simple overview of Audio Hijack’s built-in effects and ways they can be used to enhance your sound.

10 Band EQ

Fine-tune specific frequencies by adjusting the relative levels of 10 different frequency bands.

Balance

Adjust relative levels of audio playback between the left and right stereo channels.

Bass & Treble

Adjust bass and treble to quickly boost or filter out unwanted frequencies.

Channels

Adjust channels with multiple settings to Swap the left and right channels, sum both channels to Mono, Duplicate, Kill, or Invert the Left or Right channels, or Subtract the Left and Right Channel audio to isolate to center channel.

Low Pass Filter

Remove or reduce high pitched/high frequency sounds in audio by setting a cutoff frequency, above which audio is filtered out and below which lower frequency sounds can continue to pass.

Magic Boost

Boosts quiet audio so you can hear it, while louder audio is left untouched to increase the perceived overall volume without adding distortion.

Mono Enhancer

Enrich mono audio with a stereo sound by setting a crossover frequency to create a stereo image.

Pan

Direct audio to the left or right stereo channel.

Simple Compressor

Reduce dynamic range of audio, making quiet sounds louder and loud sounds quieter to even out the overall volume level.

Volume

Increase or lower audio's volume, with up to 4x overdrive settings for especially quiet sources.

Advanced effects

Declick

Set a threshold to remove high pitched clicking sounds from audio.

Dehum

Adjust the base and mount of the effect to remove low frequency humming from audio.

Denoise

Learn and then remove high pitched noise from audio.

Ducking

Duck one audio signal, such as music, under another, such as a voice over microphone, so that when audio is detected from the overlay source, the volume of the ducked source is automatically reduced so that the overlay source is heard clearly.

FIR Filter

Give your audio a signature sound by emulating specific environments or hardware.

Input Switch

Toggle between two sources, which will mute audio from one when switching to the other.

Mixer

Mix your audio by setting levels and pan settings for multiple audio sources.

Parametric EQ

Fine-tune audio by adjusting with surgical precision, using multiple bands with fully customizable filter types, frequency, Q, and gain.

Speech Denoise

Suppress background noise and highlight speech to make it pop above other audio.

Sync

Precise audio delay that's useful for offsetting audio playback to sync with other sources.

Time Shift

Pause and rewind live audio or jump to real time.

Transcribe

Convert speech to text, with your own personal stenographer.

Learning more about audio effects

For more details on Advanced blocks, be sure to read the “Advanced Blocks” page of Audio Hijack's manual.

Experimenting by listening to your audio output while adjusting effect parameters is a useful strategy for getting to know any audio effect. Trying this approach with different effects and audio sources can help to build intuition for how audio effects can change your sound and when they might be useful to add to your setup.

For more in-depth information, books on sound recording offer perspectives on the technical and creative problems that audio effects can solve.

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