applyFade

Applies linear fade-in and fade-out effects to audio samples.

function applyFade(
   samples, 
   fadeInSamples, 
   fadeOutSamples): Float32Array;

Defined in: src/utils/audio.ts:457

Applies linear fade-in and fade-out effects to audio samples.

Parameters

Parameter	Type	Description
`samples`	`Float32Array`	The input audio samples as a `Float32Array`.
`fadeInSamples`	`number`	The number of samples for the fade-in ramp.
`fadeOutSamples`	`number`	The number of samples for the fade-out ramp.

Returns

Float32Array

A new Float32Array with the fade effects applied.

Remarks

Creates a copy of the input samples with linear gain ramps at the beginning (fade-in) and end (fade-out) of the buffer. This is useful for preventing audible clicks or pops when audio chunks are stitched together or when playback starts/stops abruptly.

The fade durations are specified in number of samples, not milliseconds. To convert milliseconds to samples: samples = (ms / 1000) * sampleRate.

Example

// Apply 10ms fade at 16 kHz (160 samples)
const fadeSamples = 160;
const smoothed = applyFade(audioBuffer, fadeSamples, fadeSamples);