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AudioVector
in package

Represents audio data for Essentia processing

Table of Contents

Properties

$channels  : int
$data  : array<string|int, mixed>
$sampleRate  : int

Methods

__construct()  : mixed
__toString()  : string
applyFade()  : self
Apply fade in/out
applyGain()  : self
Apply gain (amplification/attenuation)
fromArray()  : self
fromFile()  : self
Load audio from any file format supported by FFmpeg
fromRawPCM()  : self
Create AudioVector from raw PCM binary data
fromUrl()  : self
Load audio from a URL or stream
fromWav()  : self
Load audio specifically from WAV files (optimized path)
getAudioInfo()  : array<string|int, mixed>
Get audio metadata using FFprobe
getChannels()  : int
getData()  : array<string|int, mixed>
getDuration()  : float
getLength()  : int
getSampleRate()  : int
normalize()  : self
resample()  : self
Resample audio to a different sample rate using FFmpeg
saveToFile()  : void
Save audio data to file using FFmpeg
slice()  : self
sliceTime()  : self
Extract a time-based slice
toCArray()  : CData
convertToMono()  : array<string|int, mixed>
packFloatArray()  : string
unpackFloatArray()  : array<string|int, mixed>
unpackInt16Array()  : array<string|int, mixed>
unpackInt24Array()  : array<string|int, mixed>
unpackInt32Array()  : array<string|int, mixed>

Properties

Methods

__construct()

public __construct(array<string|int, mixed> $data[, int $sampleRate = 44100 ][, int $channels = 1 ]) : mixed
Parameters
$data : array<string|int, mixed>
$sampleRate : int = 44100
$channels : int = 1

__toString()

public __toString() : string
Return values
string

applyFade()

Apply fade in/out

public applyFade([float $fadeInSeconds = 0 ][, float $fadeOutSeconds = 0 ]) : self
Parameters
$fadeInSeconds : float = 0
$fadeOutSeconds : float = 0
Return values
self

applyGain()

Apply gain (amplification/attenuation)

public applyGain(float $gainDb) : self
Parameters
$gainDb : float
Return values
self

fromArray()

public static fromArray(array<string|int, mixed> $data[, int $sampleRate = 44100 ]) : self
Parameters
$data : array<string|int, mixed>
$sampleRate : int = 44100
Return values
self

fromFile()

Load audio from any file format supported by FFmpeg

public static fromFile(string $filePath[, int $sampleRate = 44100 ][, int $channels = 1 ]) : self
Parameters
$filePath : string
$sampleRate : int = 44100
$channels : int = 1
Return values
self

fromRawPCM()

Create AudioVector from raw PCM binary data

public static fromRawPCM(string $rawData[, int $sampleRate = 44100 ][, string $format = 'f32le' ]) : self
Parameters
$rawData : string
$sampleRate : int = 44100
$format : string = 'f32le'
Return values
self

fromUrl()

Load audio from a URL or stream

public static fromUrl(string $url[, int $sampleRate = 44100 ][, int $maxDuration = 300 ]) : self
Parameters
$url : string
$sampleRate : int = 44100
$maxDuration : int = 300
Return values
self

fromWav()

Load audio specifically from WAV files (optimized path)

public static fromWav(string $filePath[, int $sampleRate = 44100 ]) : self
Parameters
$filePath : string
$sampleRate : int = 44100
Return values
self

getAudioInfo()

Get audio metadata using FFprobe

public static getAudioInfo(string $filePath) : array<string|int, mixed>
Parameters
$filePath : string
Return values
array<string|int, mixed>

getChannels()

public getChannels() : int
Return values
int

getData()

public getData() : array<string|int, mixed>
Return values
array<string|int, mixed>

getDuration()

public getDuration() : float
Return values
float

getLength()

public getLength() : int
Return values
int

getSampleRate()

public getSampleRate() : int
Return values
int

normalize()

public normalize() : self
Return values
self

resample()

Resample audio to a different sample rate using FFmpeg

public resample(int $newSampleRate) : self
Parameters
$newSampleRate : int
Return values
self

saveToFile()

Save audio data to file using FFmpeg

public saveToFile(string $filePath[, string $format = 'wav' ]) : void
Parameters
$filePath : string
$format : string = 'wav'

slice()

public slice(int $start, int $length) : self
Parameters
$start : int
$length : int
Return values
self

sliceTime()

Extract a time-based slice

public sliceTime(float $startSeconds, float $durationSeconds) : self
Parameters
$startSeconds : float
$durationSeconds : float
Return values
self

toCArray()

public toCArray(FFI $ffi) : CData
Parameters
$ffi : FFI
Return values
CData

convertToMono()

private static convertToMono(array<string|int, mixed> $data, int $channels) : array<string|int, mixed>
Parameters
$data : array<string|int, mixed>
$channels : int
Return values
array<string|int, mixed>

packFloatArray()

private packFloatArray(array<string|int, mixed> $data) : string
Parameters
$data : array<string|int, mixed>
Return values
string

unpackFloatArray()

private static unpackFloatArray(string $binaryData) : array<string|int, mixed>
Parameters
$binaryData : string
Return values
array<string|int, mixed>

unpackInt16Array()

private static unpackInt16Array(string $binaryData) : array<string|int, mixed>
Parameters
$binaryData : string
Return values
array<string|int, mixed>

unpackInt24Array()

private static unpackInt24Array(string $binaryData) : array<string|int, mixed>
Parameters
$binaryData : string
Return values
array<string|int, mixed>

unpackInt32Array()

private static unpackInt32Array(string $binaryData) : array<string|int, mixed>
Parameters
$binaryData : string
Return values
array<string|int, mixed> 

        

        
    




    

    

                                

                

                                
    

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