KaneAI - World’s First E2E Software Testing Agent.Book a Demo Join TestMu Conference

How to use createLowpassFilter method in wpt

Best JavaScript code snippet using wpt

gesture-store.ts

Source:gesture-store.ts

1import { computed, observable, action } from "mobx";2import { Gesture, MotionReading, GestureExampleData, Match } from "./motion";3import { SingleDTWCore } from "./model";4import { serialData } from "./serial-data";5const READING_HISTORY_LIMIT = 30;6const createLowPassFilter = () => {7    const alpha = 0.5;8    let previousSmoothed = 0;9    return (value: number) => {10        const smoothed = alpha * value + (1 - alpha) * previousSmoothed;11        previousSmoothed = smoothed;12        return smoothed;13    }14}15export class GestureStore {16    // contains all of the gesture data17    @observable public gestures: Gesture[] = [];18    // is the Circuit Playground streaming accelerometer data or not19    @observable public connected: boolean;20    // needs saving21    @observable public hasBeenModified: boolean = false;22    @observable public readings: MotionReading[] = []; // 0 <= length < READING_HISTORY_LIMIT 23    @observable public latestTimestamp: number = 0;24    @observable public matches: Match[] = [];25    private models: SingleDTWCore[] = [];26    private idToType: pxt.Map<string> = {};27    private extId: string;28    private curGestureIndex: number = 0;29    public saveBlocks = debounce(() => this.saveBlocksNow(), 2000);30    constructor() {31        this.extId = window.location.hash.substr(1);32        console.log(`extension id: ${this.extId}`)33        window.addEventListener(34            "message",35            ev => ev.data.type == "pxtpkgext" ? this.receiveMessage(ev.data) : undefined,36            false);37        this.sendRequest("extinit");38        const filterX = createLowPassFilter();39        const filterY = createLowPassFilter();40        const filterZ = createLowPassFilter();41        serialData.register(data => {42            const accelX = filterX(data.accVec.accelX);43            const accelY = filterY(data.accVec.accelY);44            const accelZ = filterZ(data.accVec.accelZ);45            this.readings.push(new MotionReading(accelX, accelY, accelZ));46            this.latestTimestamp++;47            if (this.readings.length > READING_HISTORY_LIMIT) {48                this.readings.shift();49            }50            if (this.currentModel && this.currentModel.isRunning()) {51                let match = this.currentModel.feed(data.accVec);52                if (match) {53                    this.matches.push(match);54                }55            }56        });57    }58    public get readingLimit() { return READING_HISTORY_LIMIT; }59    @computed public get currentModel() {60        return this.models[this.curGestureIndex];61    }62    @computed public get currentGesture() {63        return this.gestures[this.curGestureIndex];64    }65    @computed public get currentOrientation() {66        return this.readings.length ?67            this.readings[this.readings.length - 1] :68            undefined;69    }70    public isMatch(readingIndex: number): boolean {71        const time = this.latestTimestamp - (this.readings.length - 1 - readingIndex);72        return this.matches.findIndex(m => m.startTime <= time && time <= m.endTime) >= 0;73    }74    @action public setCurrentGesture(gestureId: number): void {75        this.curGestureIndex = this.gestures.findIndex(g => g.gestureID === gestureId);76        this.currentModel.update(this.gestures[this.curGestureIndex].getCroppedData(), this.latestTimestamp);   77    }78    @action public deleteSample(gesture: Gesture, sample: GestureExampleData) {79        let cloneData = this.gestures.slice();80        const gi = this.gestures.indexOf(gesture);81        const si = this.gestures[gi].samples.indexOf(sample);82        cloneData[gi].samples.splice(si, 1);83        const model = this.models[gi];84        model.update(cloneData[gi].getCroppedData(), this.latestTimestamp);85        cloneData[gi].displayGesture = model.prototype;86        this.gestures = cloneData;87        this.markDirty();88    }89    @action public addSample(gesture: Gesture, newSample: GestureExampleData) {90        let cloneData = this.gestures.slice();91        const gestureIndex = this.gestures.indexOf(gesture);92        // do not change the order of the following lines:93        cloneData[gestureIndex].samples.unshift(newSample);94        gestureStore.currentModel.update(cloneData[gestureIndex].getCroppedData(), this.latestTimestamp);95        cloneData[gestureIndex].displayGesture = gestureStore.currentModel.prototype;96        this.gestures = cloneData;97        this.markDirty();98    }99    private receiveMessage(data: pxt.editor.ExtensionMessage) {100        const ev = data as pxt.editor.ExtensionEvent;101        if (ev.event) {102            switch (ev.event) {103                case "extconsole":104                    const cons = ev as pxt.editor.ConsoleEvent;105                    // drop sim106                    if (cons.body.sim) return;107                    this.onSerialData(cons.body.data);108                    break;109                case "extshown":110                    console.log('pxt-gestures shown')111                    this.connected = true;112                    this.sendRequest("extdatastream");113                    this.sendRequest("extreadcode")114                    break;115                case "exthidden":116                    console.log('pxt-gestures hidden')117                    this.connected = false;118                    break;119                default:120                    break;121            }122            return;123        }124        const action = this.idToType[data.id];125        console.log(`msg: ${action}`)126        delete this.idToType[data.id];127        switch (action) {128            case "extinit":129                this.sendRequest("extdatastream");130                this.sendRequest("extreadcode");131                break;132            case "extreadcode":133                // received existing code134                const usercode = data as pxt.editor.ReadCodeResponse;135                this.loadBlocks(usercode.resp.code, usercode.resp.json);136                break;137            default: break;138        }139    }140    private sendRequest(action: string, body?: any) {141        const id = Math.random().toString();142        this.idToType[id] = action;143        const msg = {144            type: "pxtpkgext",145            action: action,146            extId: this.extId,147            response: true,148            id: id,149            body150        };151        if (window.parent && window != window.parent)152            window.parent.postMessage(msg, "*");153    }154    /**155     * Initializes the serial port (using hid for the Circuit Playground) and sets the onSerialData event function156     * to update the realtime graph, feed the recorder, and feed the realtime DTW model (if it is running)157     */158    private onSerialData(strBuf: string) {159        const newData = parseString(strBuf);160        if (newData && newData.acc)161            serialData.notify(newData);162        this.connected = true;163    }164    /**165     * updates this.state.data[] array and the models[] array with a 166     * new Gesture and switches to the editGesture window167     */168    @action public addGesture() {169        this.gestures.push(new Gesture());170        // TODO: change this method of keeping the current gesture index to something more reliable171        this.curGestureIndex = this.gestures.length - 1;172        const model = new SingleDTWCore(this.gestures[this.curGestureIndex].gestureID + 1, this.gestures[this.curGestureIndex].name);173        this.models.push(model);174    }175    /**176     * will generate the code blocks for each running DTW model and will rewrite 177     * the contents of the custom.ts file with 178     */179    private saveBlocksNow() {180        if (!this.hasBeenModified) return;181        let cloneData = this.gestures.slice();182        const codeBlocks: string[] = this.models183            .filter(m => m.isRunning())184            .map(m => m.generateBlock());185        const code = SingleDTWCore.generateNamespace(codeBlocks);186        const json = JSON.stringify(this.gestures, null, 2);187        this.sendRequest("extwritecode", { code, json });188        this.hasBeenModified = false;189        this.gestures = cloneData; // FIXME: Why did Majeed do this?190    }191    markDirty() {192        if (!this.hasBeenModified) {193            this.hasBeenModified = true;194            this.saveBlocks();195        }196    }197    @action private loadBlocks(code: string, json: string) {198        if (!json) return;199        let jsonGestures: Gesture[] = JSON.parse(json);200        if (!jsonGestures) return;201        this.gestures = jsonGestures.map(importedGesture => 202            Gesture.parseGesture(importedGesture));203        this.models = this.gestures.map(gesture => {204            let model = new SingleDTWCore(gesture.gestureID + 1, gesture.name);205            model.update(gesture.getCroppedData(), this.latestTimestamp);206            return model;207        });208    }209    /**210     * Removes the currently active gesture if it contains no samples211     */212    @action public deleteIfGestureEmpty() {213        if (this.gestures.length > 0 && this.gestures[this.curGestureIndex].samples.length == 0) {214            // delete the gesture215            let cloneData = this.gestures.slice();216            cloneData.splice(this.curGestureIndex, 1);217            // delete the model218            this.models.splice(this.curGestureIndex, 1);219            this.gestures = cloneData;220        }221    }222    @action public deleteGesture(gesture: Gesture) {223        const index = this.gestures.indexOf(gesture);224        if (index >= 0) {225            this.gestures.splice(index, 1);226            this.models.splice(index, 1);227            this.markDirty();228        }229    }230}231// Returns a function, that, as long as it continues to be invoked, will not232// be triggered. The function will be called after it stops being called for233// N milliseconds. If `immediate` is passed, trigger the function on the234// leading edge, instead of the trailing.235function debounce(func: (...args: any[]) => any, wait: number, immediate?: boolean): any {236    let timeout: any;237    return function () {238        let context = this;239        let args = arguments;240        let later = function () {241            timeout = null;242            if (!immediate) func.apply(context, args);243        };244        let callNow = immediate && !timeout;245        clearTimeout(timeout);246        timeout = setTimeout(later, wait);247        if (callNow) func.apply(context, args);248    };249}250function parseString(strBuf: string): any {251    // populate members of newData (type: SensorData) with the values received from the device252    let strBufArray = strBuf.split(" ");253    let result = {254        acc: false, accVec: new MotionReading(0, 0, 0),255        /*mag: false, magVec: new Vector(0, 0, 0)*/256    };257    for (let i = 0; i < strBufArray.length; i++) {258        if (strBufArray[i] == "A") {259            result.accVec = new MotionReading(260                parseInt(strBufArray[i + 1]), 261                parseInt(strBufArray[i + 2]), 262                parseInt(strBufArray[i + 3]));263            result.acc = true;264            i += 3;265        }266    }267    return result;268}...

biquad-filters.js

Source:biquad-filters.js

...4//5// The formulas for the various filters were taken from6// http://www.musicdsp.org/files/Audio-EQ-Cookbook.txt.7// Lowpass filter.8function createLowpassFilter(freq, q, gain) {9    var b0;10    var b1;11    var b2;12    var a0;13    var a1;14    var a2;15    if (freq == 1) {16        // The formula below works, except for roundoff.  When freq = 1,17        // the filter is just a wire, so hardwire the coefficients.18        b0 = 1;19        b1 = 0;20        b2 = 0;21        a0 = 1;22        a1 = 0;...

Using AI Code Generation

1var context = new wptAudioContext();2var filter = context.createLowpassFilter();3var context = new wptAudioContext();4var audioElement = document.getElementById("audio");5var source = context.createMediaElementSource(audioElement);6var context = new wptAudioContext();7var source = context.createMediaStreamSource(stream);8var context = new wptAudioContext();9var destination = context.createMediaStreamDestination();10var context = new wptAudioContext();11var oscillator = context.createOscillator();12var context = new wptAudioContext();13var real = new Float32Array(2);14var imag = new Float32Array(2);15var wave = context.createPeriodicWave(real, imag);16var context = new wptAudioContext();17var bufferSize = 1024;18var numberOfInputChannels = 2;19var numberOfOutputChannels = 2;20var scriptProcessor = context.createScriptProcessor(bufferSize, numberOfInputChannels, numberOfOutputChannels);21var context = new wptAudioContext();22var panner = context.createStereoPanner();23var context = new wptAudioContext();24var waveShaper = context.createWaveShaper();25var context = new wptAudioContext();26var audioData = new ArrayBuffer();27var successCallback = function(decodedData) {28};29var errorCallback = function() {30};

Using AI Code Generation

1var wpt = new webkitAudioContext();2var lowpassFilter = wpt.createLowpassFilter();3var wpt = new webkitAudioContext();4var biquadFilter = wpt.createBiquadFilter();5var wpt = new webkitAudioContext();6var delay = wpt.createDelay();7var wpt = new webkitAudioContext();8var scriptProcessor = wpt.createScriptProcessor();9var wpt = new webkitAudioContext();10var waveShaper = wpt.createWaveShaper();11var wpt = new webkitAudioContext();12var panner = wpt.createPanner();13var wpt = new webkitAudioContext();14var convolver = wpt.createConvolver();15var wpt = new webkitAudioContext();16var channelSplitter = wpt.createChannelSplitter();17var wpt = new webkitAudioContext();18var channelMerger = wpt.createChannelMerger();19var wpt = new webkitAudioContext();20var dynamicsCompressor = wpt.createDynamicsCompressor();21var wpt = new webkitAudioContext();22var oscillator = wpt.createOscillator();23var wpt = new webkitAudioContext();24var gain = wpt.createGain();25var wpt = new webkitAudioContext();26var analyser = wpt.createAnalyser();27var wpt = new webkitAudioContext();28var mediaElementSource = wpt.createMediaElementSource();29var wpt = new webkitAudioContext();30var mediaStreamSource = wpt.createMediaStreamSource();

Using AI Code Generation

1var wptools = require('webaudio-peaks');2var audioContext = new AudioContext();3var audioBuffer = audioContext.createBuffer(2, 44100, 44100);4var peaks = wptools.createLowpassFilter(audioBuffer, 2000);5var wptools = require('webaudio-peaks');6var audioContext = new AudioContext();7var audioBuffer = audioContext.createBuffer(2, 44100, 44100);8var peaks = wptools.createHighpassFilter(audioBuffer, 2000);9var wptools = require('webaudio-peaks');10var audioContext = new AudioContext();11var audioBuffer = audioContext.createBuffer(2, 44100, 44100);12var peaks = wptools.createBandpassFilter(audioBuffer, 2000, 4000);13var wptools = require('webaudio-peaks');14var audioContext = new AudioContext();15var audioBuffer = audioContext.createBuffer(2, 44100, 44100);16var peaks = wptools.createBandstopFilter(audioBuffer, 2000, 4000);17var wptools = require('webaudio-peaks');18var audioContext = new AudioContext();19var audioBuffer = audioContext.createBuffer(2, 44100, 44100);20var peaks = wptools.createAllpassFilter(audioBuffer, 2000);21var wptools = require('webaudio-peaks');22var audioContext = new AudioContext();23var audioBuffer = audioContext.createBuffer(2, 44100, 44100);24var peaks = wptools.createPeakingFilter(audioBuffer, 2000, 4000);25var wptools = require('webaudio-peaks');26var audioContext = new AudioContext();27var audioBuffer = audioContext.createBuffer(2, 44100, 44100);28var peaks = wptools.createLowshelfFilter(audioBuffer, 2000);

Using AI Code Generation

1var wpt = new WebAudioTestAPI();2var context = new wpt.AudioContext();3var filter = context.createLowpassFilter();4var filter2 = context.createLowpassFilter();5filter.connect(filter2);6filter.frequency.value = 5000;7filter2.frequency.value = 10000;8var wpt = new WebAudioTestAPI();9var context = new wpt.AudioContext();10var panner = context.createPanner();11panner.panningModel = "HRTF";12panner.distanceModel = "inverse";13panner.refDistance = 1;14panner.maxDistance = 10000;15panner.rolloffFactor = 1;16panner.coneInnerAngle = 360;17panner.coneOuterAngle = 0;18panner.coneOuterGain = 0;19panner.setOrientation(0, 0, 1);20panner.setPosition(0, 0, 0);21panner.setVelocity(0, 0, 0);22var wpt = new WebAudioTestAPI();23var context = new wpt.AudioContext();24var real = new Float32Array([0, 0, 1, 0, 0, 0, 0, 0, 0, 0]);25var imag = new Float32Array([0, 0, 0, 0, 0, 0, 0, 0, 0, 0]);26var wave = context.createPeriodicWave(real, imag);27var wpt = new WebAudioTestAPI();28var context = new wpt.AudioContext();29var panner = context.createStereoPanner();30panner.pan.value = 0;31var wpt = new WebAudioTestAPI();32var context = new wpt.AudioContext();33var shaper = context.createWaveShaper();34var curve = new Float32Array([0, 0, 1, 0, 0, 0, 0, 0, 0, 0]);35shaper.curve = curve;36shaper.oversample = 'none';

Using AI Code Generation

1var wptoolkit = require('wptoolkit');2var filter = wptoolkit.createLowpassFilter(1000, 0.707, 44100);3var wptoolkit = require('wptoolkit');4var context = wptoolkit.createAudioContext();5var filter = wptoolkit.createLowpassFilter(1000, 0.707, context);6var wptoolkit = require('wptoolkit');7var filter = wptoolkit.createHighpassFilter(1000, 0.707, 44100);8var wptoolkit = require('wptoolkit');9var context = wptoolkit.createAudioContext();10var filter = wptoolkit.createHighpassFilter(1000, 0.707, context);11var wptoolkit = require('wptoolkit');12var filter = wptoolkit.createBandpassFilter(1000, 0.707, 44100);13var wptoolkit = require('wptoolkit');14var context = wptoolkit.createAudioContext();15var filter = wptoolkit.createBandpassFilter(1000, 0.707, context);16var wptoolkit = require('wptoolkit');17var filter = wptoolkit.createBandstopFilter(1000, 0.707, 44100);18var wptoolkit = require('wptoolkit');19var context = wptoolkit.createAudioContext();20var filter = wptoolkit.createBandstopFilter(1000, 0.707, context);

Using AI Code Generation

1var wptoolkit = require('wptoolkit');2var lowpassFilter = wptoolkit.createLowpassFilter();3init()4init(sampleRate, cutoffFrequency)5var wptoolkit = require('wptoolkit');6var lowpassFilter = wptoolkit.createLowpassFilter();7lowpassFilter.init(100, 0.1);8filter()9filter(value)10var wptoolkit = require('wptoolkit');11var lowpassFilter = wptoolkit.createLowpassFilter();12lowpassFilter.init(100, 0.1);13var filteredValue = lowpassFilter.filter(5);14filterArray()15filterArray(valueArray)16var wptoolkit = require('wptoolkit');17var lowpassFilter = wptoolkit.createLowpassFilter();18lowpassFilter.init(100, 0.1);19var valueArray = [1, 2, 3, 4, 5];

Using AI Code Generation

1var lowPassFilter = new LowPassFilter(0.5);2var filteredValue = lowPassFilter.filter(1.0);3var highPassFilter = new HighPassFilter(0.5);4var filteredValue = highPassFilter.filter(1.0);5var bandPassFilter = new BandPassFilter(0.5,0.5);6var filteredValue = bandPassFilter.filter(1.0);7var lowShelfFilter = new LowShelfFilter(0.5,0.5);8var filteredValue = lowShelfFilter.filter(1.0);9var highShelfFilter = new HighShelfFilter(0.5,0.5);10var filteredValue = highShelfFilter.filter(1.0);11var peakingFilter = new PeakingFilter(0.5,0.5,0.5);12var filteredValue = peakingFilter.filter(1.0);13var notchFilter = new NotchFilter(0.5,0.5);14var filteredValue = notchFilter.filter(1.0);15var allPassFilter = new AllPassFilter(0.5);16var filteredValue = allPassFilter.filter(1.0);17var delay = new Delay(0.5);18var delayedValue = delay.delay(1.0);19var convolver = new Convolver();20var convolvedValue = convolver.convolve(1.0);21var gain = new Gain(0.5);22var gainValue = gain.gain(1.0);23var panner = new Panner(0.5,0.5);24var pannerValue = panner.panner(1.0);25var compressor = new Compressor(0.5

Using AI Code Generation

1var filter = wptools.createLowpassFilter( 100, 1000, 0.01, 0.1);2var filter = wptools.createHighpassFilter( 100, 1000, 0.01, 0.1);3var filter = wptools.createBandpassFilter( 100, 1000, 0.01, 0.1);4var filter = wptools.createBandstopFilter( 100, 1000, 0.01, 0.1);5var filter = wptools.createAllpassFilter( 100, 1000, 0.01, 0.1);6var filter = wptools.createPeakingFilter( 100, 1000, 0.01, 0.1);7var filter = wptools.createNotchFilter( 100, 1000, 0.01, 0.1);8var filter = wptools.createLowShelfFilter( 100, 1000, 0.01, 0.1);9var filter = wptools.createHighShelfFilter( 100, 1000, 0.01, 0.1);10var delayNode = wptools.createDelayNode( 0.5 );11var gainNode = wptools.createGainNode( 0.5 );12var pannerNode = wptools.createPannerNode( 0.5, 0.5, 0.5 );

Using AI Code Generation

1var wptools = require('wptools');2var wp = new wptools('en.wikipedia.org/wiki/Node.js');3wp.createLowpassFilter('Node.js', function(err, res){4  if (err) {5    console.log(err);6  } else {7    console.log(res);8  }9});10var wptools = require('wptools');11var wp = new wptools('en.wikipedia.org/wiki/Node.js');12wp.createHighpassFilter('Node.js', function(err, res){13  if (err) {14    console.log(err);15  } else {16    console.log(res);17  }18});19var wptools = require('wptools');20var wp = new wptools('en.wikipedia.org/wiki/Node.js');21wp.createBandpassFilter('Node.js', function(err, res){22  if (err) {23    console.log(err);24  } else {25    console.log(res);26  }27});28var wptools = require('wptools');29var wp = new wptools('en.wikipedia.org/wiki/Node.js');30wp.createBandstopFilter('Node.js', function(err, res){31  if (err) {32    console.log(err);33  } else {34    console.log(res);35  }36});37var wptools = require('wptools');38var wp = new wptools('en.wikipedia.org/wiki/Node.js');39wp.createPeakingFilter('Node.js', function(err, res){40  if (err) {41    console.log(err);42  } else {43    console.log(res);44  }45});46var wptools = require('wptools');47var wp = new wptools('en.wikipedia.org/wiki/Node.js');48wp.createAllpassFilter('Node.js', function(err, res){49  if (err) {50    console.log(err);51  } else {52    console.log(res);53  }54});

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.