waveform-node

Prerequisite

You need to have ffmpeg installed, and add the path to environment variable.

Usage

``
var waveform = require('../waveform-node');

var options = {};
waveform.getWaveForm( __dirname + './mpthreetest.mp3', options, function(error, peaks){
if(error){
return;
}

// Get peaks
console.log(peaks);
});
`

Options

$3

Type: `Integer `

Default: ` undefined `

Samples per second. This parameter is conflict with numOfSample, if this attribute was set, the numOfSample will be ignored.

$3

Type: `Integer `

Default: ` 2000 `

Number of data point for return value, sampling across entire waveform

$3

Type: `Enum `

Default: ` Stack ``


Choose type of return value

- Stack will be series of peak by picking highest absolute value in given window(sampling rate)
!Alt text
- Line will be series of value by the sampling rate
!Alt text