How to use processDownMix method in wpt

Best JavaScript code snippet using wpt

mixing-rules.js

Source:mixing-rules.js

...83    }84  } else if (input.numberOfChannels < output.numberOfChannels) {85    processUpMix(input, output);86  } else {87    processDownMix(input, output);88  }89}90/**91 * In-place summing to |output| based on 'discrete' channel interpretation.92 * @param  {AudioBuffer} input          Input audio buffer.93 * @param  {AudioBuffer} output         Output audio buffer.94 */95function discreteSum(input, output) {96  if (input.length != output.length) {97    throw '[mixing-rules.js] speakerSum(): buffer lengths mismatch (input: '98      + input.length + ', output: ' + output.length + ')';99  }100  var numberOfChannels = Math.min(input.numberOfChannels, output.numberOfChannels)101  for (var channel = 0; channel < numberOfChannels; ++channel) {102    var inputChannel = input.getChannelData(channel);103    var outputChannel = output.getChannelData(channel);104    for (var i = 0; i < outputChannel.length; i++)105      outputChannel[i] += inputChannel[i];106  }107}108/**109 * Perform up-mix by in-place summing to |output| buffer.110 * @param  {AudioBuffer} input          Input audio buffer.111 * @param  {AudioBuffer} output         Output audio buffer.112 */113function processUpMix(input, output) {114  var numberOfInputChannels = input.numberOfChannels;115  var numberOfOutputChannels = output.numberOfChannels;116  var i, length = output.length;117  // Up-mixing: 1 -> 2, 1 -> 4118  //   output.L += input119  //   output.R += input120  //   output.SL += 0 (in the case of 1 -> 4)121  //   output.SR += 0 (in the case of 1 -> 4)122  if ((numberOfInputChannels === 1 && numberOfOutputChannels === 2) ||123      (numberOfInputChannels === 1 && numberOfOutputChannels === 4)) {124    var inputChannel = input.getChannelData(0);125    var outputChannel0 = output.getChannelData(0);126    var outputChannel1 = output.getChannelData(1);127    for (i = 0; i < length; i++) {128      outputChannel0[i] += inputChannel[i];129      outputChannel1[i] += inputChannel[i];130    }131    return;132  }133  // Up-mixing: 1 -> 5.1134  //   output.L += 0135  //   output.R += 0136  //   output.C += input137  //   output.LFE += 0138  //   output.SL += 0139  //   output.SR += 0140  if (numberOfInputChannels == 1 && numberOfOutputChannels == 6) {141    var inputChannel = input.getChannelData(0);142    var outputChannel2 = output.getChannelData(2);143    for (i = 0; i < length; i++)144      outputChannel2[i] += inputChannel[i];145    return;146  }147  // Up-mixing: 2 -> 4, 2 -> 5.1148  //   output.L += input.L149  //   output.R += input.R150  //   output.C += 0 (in the case of 2 -> 5.1)151  //   output.LFE += 0 (in the case of 2 -> 5.1)152  //   output.SL += 0153  //   output.SR += 0154  if ((numberOfInputChannels === 2 && numberOfOutputChannels === 4) ||155      (numberOfInputChannels === 2 && numberOfOutputChannels === 6)) {156    var inputChannel0 = input.getChannelData(0);157    var inputChannel1 = input.getChannelData(1);158    var outputChannel0 = output.getChannelData(0);159    var outputChannel1 = output.getChannelData(1);160    for (i = 0; i < length; i++) {161      outputChannel0[i] += inputChannel0[i];162      outputChannel1[i] += inputChannel1[i];163    }164    return;165  }166  // Up-mixing: 4 -> 5.1167  //   output.L += input.L168  //   output.R += input.R169  //   output.C += 0170  //   output.LFE += 0171  //   output.SL += input.SL172  //   output.SR += input.SR173  if (numberOfInputChannels === 4 && numberOfOutputChannels === 6) {174    var inputChannel0 = input.getChannelData(0); // input.L175    var inputChannel1 = input.getChannelData(1); // input.R176    var inputChannel2 = input.getChannelData(2); // input.SL177    var inputChannel3 = input.getChannelData(3); // input.SR178    var outputChannel0 = output.getChannelData(0); // output.L179    var outputChannel1 = output.getChannelData(1); // output.R180    var outputChannel4 = output.getChannelData(4); // output.SL181    var outputChannel5 = output.getChannelData(5); // output.SR182    for (i = 0; i < length; i++) {183      outputChannel0[i] += inputChannel0[i];184      outputChannel1[i] += inputChannel1[i];185      outputChannel4[i] += inputChannel2[i];186      outputChannel5[i] += inputChannel3[i];187    }188    return;189  }190  // All other cases, fall back to the discrete sum.191  discreteSum(input, output);192}193/**194 * Perform down-mix by in-place summing to |output| buffer.195 * @param  {AudioBuffer} input          Input audio buffer.196 * @param  {AudioBuffer} output         Output audio buffer.197 */198function processDownMix(input, output) {199  var numberOfInputChannels = input.numberOfChannels;200  var numberOfOutputChannels = output.numberOfChannels;201  var i, length = output.length;202  // Down-mixing: 2 -> 1203  //   output += 0.5 * (input.L + input.R)204  if (numberOfInputChannels === 2 && numberOfOutputChannels === 1) {205    var inputChannel0 = input.getChannelData(0); // input.L206    var inputChannel1 = input.getChannelData(1); // input.R207    var outputChannel0 = output.getChannelData(0);208    for (i = 0; i < length; i++)209      outputChannel0[i] += 0.5 * (inputChannel0[i] + inputChannel1[i]);210    return;211  }212  // Down-mixing: 4 -> 1...

Using AI Code Generation

1var wptools = require('wptools');2var wp = wptools.page('Barack Obama');3wp.processDownMix(function(err, result) {4    if (err) {5        console.log(err);6    } else {7        console.log(result);8    }9});10{ 11    {

Using AI Code Generation

1var wptoolkit = require('wptoolkit');2var input = 'input.wav';3var output = 'output.wav';4wptoolkit.processDownMix(input, output, function(err, result) {5    if (err) {6        console.log('Error: ' + err);7    } else {8        console.log('Success');9    }10});11Copyright (c) 2018, WPTOOLKIT

Using AI Code Generation

1var wptoolkit = require('wptoolkit');2wptoolkit.processDownMix('test.wav', 'test.mp3', function(err, result){3	if(err){4		console.log(err);5	}6	else{7		console.log(result);8	}9});10var wptoolkit = require('wptoolkit');11wptoolkit.processDownMix('test.wav', 'test.mp3', function(err, result){12	if(err){13		console.log(err);14	}15	else{16		console.log(result);17	}18});19var wptoolkit = require('wptoolkit');20wptoolkit.processDownMix('test.wav', 'test.mp3', function(err, result){21	if(err){22		console.log(err);23	}24	else{25		console.log(result);26	}27});28var wptoolkit = require('wptoolkit');29wptoolkit.processDownMix('test.wav', 'test.mp3', function(err, result){30	if(err){31		console.log(err);32	}33	else{34		console.log(result);35	}36});37var wptoolkit = require('wptoolkit');38wptoolkit.processDownMix('test.wav', 'test.mp3', function(err, result){39	if(err){40		console.log(err);41	}42	else{43		console.log(result);44	}45});

Using AI Code Generation

1var wptool = require('wptool');2var path = require('path');3var fs = require('fs');4var dir = path.join(__dirname, 'data');5var files = fs.readdirSync(dir);6var options = {7};8files.forEach(function(file) {9    var filepath = path.join(dir, file);10    wptool.processDownMix(filepath, options, function(err, data) {11        if (err) {12            console.log('error', err);13        } else {14            console.log('success', data);15        }16    });17});

Using AI Code Generation

1var wptoolkit = require('wptoolkit');2var options = {3};4wptoolkit.processDownMix(options, function(err, data) {5  if (err) {6    console.log(err);7  } else {8    console.log(data);9  }10});11var wptoolkit = require('wptoolkit');12var options = {13};14wptoolkit.processDownMix(options, function(err, data) {15  if (err) {16    console.log(err);17  } else {18    console.log(data);19  }20});21var wptoolkit = require('wptoolkit');22var options = {23};24wptoolkit.processDownMix(options, function(err, data) {25  if (err) {26    console.log(err);27  } else {28    console.log(data);29  }30});31var wptoolkit = require('wptoolkit');32var options = {33};34wptoolkit.processDownMix(options, function(err, data) {35  if (err) {36    console.log(err);37  } else {38    console.log(data);39  }40});41var wptoolkit = require('wptoolkit');42var options = {43};44wptoolkit.processDownMix(options, function(err, data) {45  if (err) {46    console.log(err);47  } else {48    console.log(data);49  }50});

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