VU Meter

A VU Meter for Node.js, works on streams of raw pcm data.

Installation

npm install --save vu-meter

Usage

const VUMeter = require('vu-meter')
 
const meter = new VUMeter()
 
process.stdin.pipe(meter)
 
meter.on('data', (data) => {
  data[0] // dB value of left channel
  data[1] // dB value of right channel
})

API

new VUMeter()

Create a new transform stream that emits the current amplitude in decibels.

Currently only 2-channel 16-bit little-endian signed integer pcm encoded data is supported.

data event

Emits a Float64Array that contains the amplitude of the left and right channel.