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pizzicato-recorder

A recording module for PizzicatoJS

Description

Recording system plugin to extend PizzicatoJS. It uses a script processor node and inline web worker to collect audio data, and write out to WAV.

Initialization

You must import pizzicato and pizzicato-recorder, and then call PizzicatoRecorder with the Pizzicato instance.

import PizzicatoRecorder from 'pizzicato-recorder'
import Pizzicato from 'pizzicato'

// extend Pizzicato
PizzicatoRecorder(Pizzicato)

Methods

Start Recording

Pizzicato.Recorder.start(options)

Passing an options object to the start method is optional

Example options object:

{
  mute: Boolean /* Allows the muting of the output whilst recording */
}

Stop Recording

Pizzicato.Recorder.stop('wav', callback)

Simple Usage In Browser

import PizzicatoRecorder from 'pizzicato-recorder'
import Pizzicato from 'pizzicato'

PizzicatoRecorder(Pizzicato)

document.addEventListener('click', () => {
  Pizzicato.Recorder.start({ mute: false })
  var sound = new Pizzicato.Sound('bird.wav', function(err) {
    if (err) return console.error(err);
	  sound.play()
	  sound.on('end', function() {
	    Pizzicato.Recorder.stop('wav', handleAudio)
	  })
  })
})

function handleAudio(file, fileType) {
  let url = URL.createObjectURL(file)
  let hf = document.createElement('a')
  hf.href = url
  hf.download = 'pizzicato-recorder-rocks.' + fileType
  hf.innerHTML = hf.download
  hf.click()
}

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pizzicato-recorder's Issues

Is it possible to mute the audio during recording?

@christoph-phillips Thank you for your fantastic wrapper for Pizzicato ๐Ÿ˜†
Please let me know is it possible to mute the audio during recording?
I tried the following code, but the recorded audio has no sound. No wonder, though...

Pizzicato.volume = 0; Pizzicato.Recorder.start(); sound.on('end', ()=>{ Pizzicato.Recorder.stop('wav', blobToBase64) }); sound.play();

MP3 export not working

By following your example, it works perfectly fine as WAV, but when passing mp3 instead, it doesn't throw any error, but you never reach the console.log call:

This doesn't work:

Pizzicato.Recorder.stop('mp3', (file, fileType)=>{
      console.log([file,fileType]);
})

This works:

Pizzicato.Recorder.stop('wav', (file, fileType)=>{
      console.log([file,fileType]);
})

Recording With A Specified BPM

That is a cool library(Thank you).
Is recording with a specified BPM(Tempo) possible?
That can help us to use recorded audio easily in DAW software.
I know how to find tempo in JavaScript(Here).
But I don't know how to record an audio file with a specified BPM.

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