import MorseAdaptiveListener from 'morse-pro/src/morse-pro-listener-adaptive.js'

public class | source

MorseAdaptiveListener

Extends:

MorseListener → MorseAdaptiveListener

Extension of the MorseListener class which automatically adapts to the dominant frequency.

Constructor Summary

Public Constructor
public	constructor(bufferDuration: number) Parameters are all the same as the MorseListener class with the addition of the bufferDuration.

Member Summary

Public Members
public	averageVolume: *
public	buffer: *[]
public	bufferIndex: number
public	bufferSize: *
public	frequencyFilter: *
public	lockFrequency: boolean

Method Summary

Public Methods
public	processSound() @access: private

Inherited Summary

From class MorseListener
public set	frequencyFilter(f: number) Set the minimum and maximum frequency filter values to be closely surrounding a specific frequency.
public get	frequencyFilterMax: *
public set	frequencyFilterMax(v: number) Set the maximum threshold on the frequency filter.
public get	frequencyFilterMin: *
public set	frequencyFilterMin(v: number) Set the minimum threshold on the frequency filter.
public get	volumeFilterMax: *
public set	volumeFilterMax(v: number) Set the maximum threshold on the volume filter.
public get	volumeFilterMin: *
public set	volumeFilterMin(v: number) Set the minimum threshold on the volume filter.
public get	volumeThreshold: *
public set	volumeThreshold(v: number) Set the threshold used to determine if an anlaysed region has sufficient sound to be "on".
public	analyserNode: *
public	audioContext: *
public	decoder: *
public	defaults: {"fftSize": number, "volumeFilterMin": , "volumeFilterMax": , "frequencyFilterMin": number, "frequencyFilterMax": number, "volumeThreshold": number}
public	fftSize: *
public	fileAudioBuffer: *
public	flushTime: number
public	freqBins: *
public	freqStep: *
public	frequencyData: *
public	input: *
public	jsNode: *
public	lastSoundWasOn: boolean
public	maxFreq: *
public	notStarted: boolean
public	sampleRate: *
public	sourceNode: *
public	ticks: number
public	timeStep: *
private	_filterBinHigh: *
private	_filterBinLow: *
private	_volumeThreshold: *
public	EOFCallback()
public	fileErrorCallback(error: *)
public	fileLoadCallback(audioBuffer: *)
public	flush(on: *) Flush the current ticks to the decoder.
public	frequencyFilterCallback(jsonData: *)
public	initialiseAudioNodes() @access: private
public	loadArrayBuffer(arrayBuffer: ArrayBuffer) Load audio data from an ArrayBuffer.
public	micErrorCallback(error: *)
public	micSuccessCallback()
public	playArrayBuffer() Play a loaded audio file (through speakers) and decode it.
public	processSound() This ScriptProcessorNode is called when it is full, we then actually look at the data in the analyserNode node to measure the volume in the frequency band of interest.
public	recordOnOrOff(soundIsOn: *) Called each tick with whether the sound is judged to be on or off.
public	spectrogramCallback(jsonData: *)
public	startListening() Start the decoder listening to the microphone.
public	stop() Stop listening.
public	volumeFilterCallback(jsonData: *)
public	volumeThresholdCallback(volume: *)

Public Constructors

public constructor(bufferDuration: number) source

Parameters are all the same as the MorseListener class with the addition of the bufferDuration.

Override:

MorseListener#constructor

Params:

Name	Type	Attribute	Description
bufferDuration	number	optional default: 500	How long in ms to look back to find the frequency with the maximum volume.

Public Members

public averageVolume: * source

public buffer: *[] source

public bufferIndex: number source

public bufferSize: * source

public frequencyFilter: * source

Set the minimum and maximum frequency filter values to be closely surrounding a specific frequency.

MorseAdaptiveListener

Extends:

Constructor Summary

Member Summary

Method Summary

Inherited Summary

Public Constructors

public constructor(bufferDuration: number) source

Override:

Params:

Public Members

public averageVolume: * source

public buffer: *[] source

public bufferIndex: number source

public bufferSize: * source

public frequencyFilter: * source

Override:

public lockFrequency: boolean source

Public Methods

public processSound() source

Override: