🎛️ Audio Filters

Expo Sonic supports advanced audio filter effects, including EQ bands, reverb, distortion, delay, and slowed reverb processing.

📦 Import

import { ExpoSonicPlayer } from "expo-sonic-ios-player";

🎚️ Equalizer Controls

Method	Signature	Description
`setBandGain`	`(band: number, gain: number) => Promise<void>`	Sets gain for a specific EQ band.
`getBandGain`	`(band: number) => Promise<number \| null>`	Gets gain of a specific band.
`getAllBandGains`	`() => Promise<number[]>`	Returns gains for all bands.
`resetEqualizer`	`() => Promise<void>`	Resets all EQ bands to default.
`applyEqualizerPreset`	`(presetName: EqualizerPreset) => Promise<void>`	Applies a predefined EQ preset.

`EqualizerPreset`

type EqualizerPreset =
  | "flat"
  | "rock"
  | "pop"
  | "jazz"
  | "classical"
  | "bass"
  | "treble"
  | "vocal";

🌫️ Reverb Controls

Method	Signature	Description
`setReverbWetDryMix`	`(wetDryMix: number) => Promise<void>`	Sets the wet/dry mix ratio.
`setReverbPreset`	`(presetName: ReverbPreset) => Promise<void>`	Applies a reverb preset.

`ReverbPreset`

type ReverbPreset =
  | "smallroom"
  | "mediumroom"
  | "largeroom"
  | "mediumhall"
  | "largehall"
  | "plate"
  | "cathedral";

⏱️ Delay Controls

Method	Signature	Description
`setDelayTime`	`(delayTime: number) => Promise<void>`	Sets the time before echo is played.
`setDelayFeedback`	`(feedback: number) => Promise<void>`	Sets how much of delay is repeated.
`setDelayWetDryMix`	`(wetDryMix: number) => Promise<void>`	Sets mix of dry and delayed audio.

🔊 Distortion Controls

Method	Signature	Description
`setDistortionWetDryMix`	`(wetDryMix: number) => Promise<void>`	Mix ratio of distorted vs clean audio.
`setDistortionPreset`	`(presetName: DistortionPreset) => Promise<void>`	Applies a distortion preset.

`DistortionPreset`

type DistortionPreset =
  | "drumsbitterbuzz"
  | "drumsbufferlayer"
  | "drumslofi"
  | "multibrokenspeaker"
  | "multicellularcpa"
  | "multidecimated1"
  | "multidecimated2"
  | "multidecimated3"
  | "multidecimated4"
  | "multidistortioncubed"
  | "multiecho1"
  | "multiecho2"
  | "multiechotight1"
  | "multiechotight2"
  | "multieverything"
  | "multiextrasmallroom"
  | "speechalienchange"
  | "speechcosmicinterference"
  | "speechgoldentone"
  | "speechradiodifference"
  | "speechwavelform";

🌀 Slowed Reverb Controls

Method	Signature	Description
`enableSlowedReverb`	`() => Promise<void>`	Enable slowed reverb effect.
`disableSlowedReverb`	`() => Promise<void>`	Disable the effect.
`toggleSlowedReverb`	`() => Promise<void>`	Toggle slowed reverb on/off.
`setSlowedReverb`	`(speed, pitch, reverbAmount) => Promise<void>`	Manually configure the slowed reverb.
`applySlowedReverbPreset`	`(presetName: SlowedReverbPreset) => Promise<void>`	Apply a preset configuration.
`getAvailableSlowedReverbPresets`	`() => Promise<SlowedReverbPreset[]>`	List available presets.
`getSlowedReverbPresetInfo`	`(presetName: SlowedReverbPreset) => Promise<SlowedReverbPresetInfo>`	Get full config for a preset.

`SlowedReverbPreset`

type SlowedReverbPreset = "classic" | "dreamy" | "subtle" | "heavy";

`SlowedReverbPresetInfo`

type SlowedReverbPresetInfo = {
  name: SlowedReverbPreset;
  speed: number;
  pitch: number;
  reverbAmount: number;
  delayAmount: number;
  delayTime: number;
  delayFeedback: number;
  description: string;
};

🧪 Audio Presets (Combinations)

Method	Signature	Description
`applyAudioPreset`	`(presetName: AudioPreset) => Promise<void>`	Apply preset combination of filters.

`AudioPreset`

type AudioPreset = "normal" | "concert" | "studio";

🛠️ Helper Methods

Method	Signature	Description
`getAvailableEqualizerPresets`	`() => Promise<string[]>`	List of available EQ presets.
`getAvailableReverbPresets`	`() => Promise<string[]>`	List of available reverb presets.
`getAvailableAudioPresets`	`() => Promise<string[]>`	List of combination presets.
`getBandFrequencies`	`() => Promise<number[]>`	Get center frequencies of EQ bands.

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