Bånder

MusicExtractor extends BaseAlgorithm
in package

MusicExtractor

Inputs:

[string] filename - the input audiofile

Outputs:

[pool] results - Analysis results pool with across-frames statistics [pool] resultsFrames - Analysis results pool with computed frame values

Parameters:

analysisSampleRate: real ∈ (0,inf) (default = 44100) the analysis sampling rate of the audio signal [Hz]

chromaprintCompute: bool ∈ {true,false} (default = false) compute the Chromaprint

chromaprintDuration: real ∈ [0,inf) (default = 0) the amount of time from the beginning used to compute the Chromaprint. 0 to use the full audio length [s]

endTime: real ∈ [0,inf) (default = 1000000) the end time of the slice you want to extract [s]

gfccStats: vector_string (default = ["mean", "cov", "icov"]) the statistics to compute for GFCC features

highlevel: vector_string list of high-level classifier models (gaia2 history filenames) to apply using extracted features. Skip classification if not specified (empty list)

loudnessFrameSize: integer ∈ (0,inf) (default = 88200) the frame size for computing average loudness

loudnessHopSize: integer ∈ (0,inf) (default = 44100) the hop size for computing average loudness

lowlevelFrameSize: integer ∈ (0,inf) (default = 2048) the frame size for computing low-level features

lowlevelHopSize: integer ∈ (0,inf) (default = 1024) the hop size for computing low-level features

lowlevelSilentFrames: string ∈ {drop,keep,noise} (default = "noise") whether to [keep/drop/add noise to] silent frames for computing low-level features

lowlevelStats: vector_string (default = ["mean", "var", "stdev", "median", "min", "max", "dmean", "dmean2", "dvar", "dvar2"]) the statistics to compute for low-level features

lowlevelWindowType: string ∈ {hamming,hann,triangular,square,blackmanharris62,blackmanharris70,blackmanharris74,blackmanharris92} (default = "blackmanharris62") the window type for computing low-level features

lowlevelZeroPadding: integer ∈ [0,inf) (default = 0) zero padding factor for computing low-level features

mfccStats: vector_string (default = ["mean", "cov", "icov"]) the statistics to compute for MFCC features

profile: string profile filename. If specified, default parameter values are overwritten by values in the profile yaml file. If not specified (empty string), use values configured by user like in other normal algorithms

requireMbid: bool ∈ {true,false} (default = false) ignore audio files without musicbrainz recording id tag (throw exception)

rhythmMaxTempo: integer ∈ [60,250] (default = 208) the fastest tempo to detect [bpm]

rhythmMethod: string ∈ {multifeature,degara} (default = "degara") the method used for beat tracking

rhythmMinTempo: integer ∈ [40,180] (default = 40) the slowest tempo to detect [bpm]

rhythmStats: vector_string (default = ["mean", "var", "stdev", "median", "min", "max", "dmean", "dmean2", "dvar", "dvar2"]) the statistics to compute for rhythm features

startTime: real ∈ [0,inf) (default = 0) the start time of the slice you want to extract [s]

tonalFrameSize: integer ∈ (0,inf) (default = 4096) the frame size for computing tonal features

tonalHopSize: integer ∈ (0,inf) (default = 2048) the hop size for computing tonal features

tonalSilentFrames: string ∈ {drop,keep,noise} (default = "noise") whether to [keep/drop/add noise to] silent frames for computing tonal features

tonalStats: vector_string (default = ["mean", "var", "stdev", "median", "min", "max", "dmean", "dmean2", "dvar", "dvar2"]) the statistics to compute for tonal features

tonalWindowType: string ∈ {hamming,hann,triangular,square,blackmanharris62,blackmanharris70,blackmanharris74,blackmanharris92} (default = "blackmanharris62") the window type for computing tonal features

tonalZeroPadding: integer ∈ [0,inf) (default = 0) zero padding factor for computing tonal features

Description:

This algorithm is a wrapper for Music Extractor. See documentation for 'essentia_streaming_extractor_music'.

Category: Extractor Mode: standard

Table of Contents

Properties

$algorithmName  : string
$category  : string
$essentia  : EssentiaFFI
$mode  : string
$parameters  : array<string|int, mixed>
$algorithmHandle  : CData|null
$configured  : bool

Methods

__construct()  : mixed
__destruct()  : mixed
compute()  : array<string|int, mixed>
getAlgorithmName()  : string
getCategory()  : string
getMode()  : string
getParameters()  : array<string|int, mixed>
setParameter()  : self
configure()  : void
isValidParameter()  : bool
validateInput()  : void
cleanupAlgorithm()  : void
configureAlgorithmParameters()  : void
estimateOutputSize()  : int
executeAlgorithm()  : array<string|int, mixed>
executeGenericAlgorithm()  : array<string|int, mixed>
executeSpecificAlgorithm()  : array<string|int, mixed>
getAlgorithmCreateFunction()  : string
getValidParameters()  : array<string|int, mixed>
initializeAlgorithm()  : void
prepareInput()  : mixed
processOutput()  : array<string|int, mixed>
processRhythmOutput()  : array<string|int, mixed>
processSpectralOutput()  : array<string|int, mixed>
processStatsOutput()  : array<string|int, mixed>
processTemporalOutput()  : array<string|int, mixed>
processTonalOutput()  : array<string|int, mixed>
setAlgorithmParameter()  : void
setArrayParameter()  : void
validateAlgorithmInput()  : void

Properties

$algorithmName

protected string $algorithmName = 'MusicExtractor'

$parameters

protected array<string|int, mixed> $parameters = []

Methods

__construct()

public __construct([array<string|int, mixed> $parameters = [] ]) : mixed
Parameters
$parameters : array<string|int, mixed> = []

compute()

public compute(mixed $input) : array<string|int, mixed>
Parameters
$input : mixed
Return values
array<string|int, mixed>

getAlgorithmName()

public getAlgorithmName() : string
Return values
string

getCategory()

public getCategory() : string
Return values
string

getParameters()

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

setParameter()

public setParameter(string $key, mixed $value) : self
Parameters
$key : string
$value : mixed
Return values
self

configure()

protected configure(array<string|int, mixed> $parameters) : void
Parameters
$parameters : array<string|int, mixed>

isValidParameter()

protected isValidParameter(string $parameter) : bool
Parameters
$parameter : string
Return values
bool

validateInput()

protected validateInput(mixed $input, string $expectedType) : void
Parameters
$input : mixed
$expectedType : string

configureAlgorithmParameters()

private configureAlgorithmParameters() : void

estimateOutputSize()

private estimateOutputSize(mixed $input) : int
Parameters
$input : mixed
Return values
int

executeAlgorithm()

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

executeGenericAlgorithm()

private executeGenericAlgorithm(FFI $ffi, mixed $input) : array<string|int, mixed>
Parameters
$ffi : FFI
$input : mixed
Return values
array<string|int, mixed>

executeSpecificAlgorithm()

private executeSpecificAlgorithm(FFI $ffi, mixed $input) : array<string|int, mixed>
Parameters
$ffi : FFI
$input : mixed
Return values
array<string|int, mixed>

getAlgorithmCreateFunction()

private getAlgorithmCreateFunction() : string
Return values
string

getValidParameters()

private getValidParameters() : array<string|int, mixed>
Return values
array<string|int, mixed>

prepareInput()

private prepareInput(mixed $input) : mixed
Parameters
$input : mixed

processOutput()

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

processRhythmOutput()

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

processSpectralOutput()

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

processStatsOutput()

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

processTemporalOutput()

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

processTonalOutput()

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

setAlgorithmParameter()

private setAlgorithmParameter(FFI $ffi, string $key, mixed $value) : void
Parameters
$ffi : FFI
$key : string
$value : mixed

setArrayParameter()

private setArrayParameter(FFI $ffi, string $key, array<string|int, mixed> $value) : void
Parameters
$ffi : FFI
$key : string
$value : array<string|int, mixed>

validateAlgorithmInput()

private validateAlgorithmInput(mixed $input) : void
Parameters
$input : mixed 

        

        
    




    

    

                                

                

                                
    

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