README

PHP class for native reading WAV (RIFF-WAVE) metadata and generating SVG-Waveforms. (PCM only)

Installation

This class can easily be installed via Composer:

composer require bluemoehre/wave-php

Alternatively you may include it the old fashioned way of downloading and adding it via:

require 'Wave.php'

How to use

Generate a single SVG:

use bluemoehre\Wave;

// load WAV file
$wave = new Wave('fooBar.wav');

// generate SVG and save to file
$wave->generateSvg('output.svg');

Generate multiple SVGs:

$files = array('foo.wav', 'bar.wav');
$wave = new Wave();

foreach ($files as $file){
  $wave->setFile($file);
  $wave->generateSvg(preg_replace('/\.wav$/', '.svg', $file);
}

Methods

• generateSvg( string $outputFile [, float $resolution ] ) : string
  Returns the waveform as SVG code. Optionally saves the output to the given filename.

• getBitsPerSample() : integer
  Returns the bits per sample count

• getByteRate() : integer
  Returns the audio byte rate

• getChannels() : integer
  Returns the audio channel count

• getKiloBitPerSecond() : float
  Returns the data rate of the audio

• getSampleRate() : integer
  Returns the audio sample rate

• getTotalSamples() : integer
  Returns the total audio sample count

• getTotalSeconds( boolean $float ) : integer | float
  Returns the audio length in seconds. Rounded by default - optinonally precise

TODO

• add support for hi-res wave files
• find solution for styling waveform via CSS (maybe allow setup of a style path)
• move SVG code to external file (so everyone can modify the code meeting all needs)
• configurable vertical SVG detail