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@dannymoerkerke/audio-recorder

v1.1.1

Published

Audio Recorder Web Component

Downloads

58

Readme

audio-recorder

An audio recorder Web Component that records audio through the microphone of the user's device.

It provides a graphic frequency analyzer and waveform view of the recorded audio and uses the MediaDevices API, Web Audio API and the MediaRecorder API.

Installation

npm i @dannymoerkerke/audio-recorder

Usage

Add a <script> tag to your page:

<script type="module" src="path/to/node_modules/@dannymoerkerke/src/audio-recorder.js"></script>

or import it:

import './path/to/node_modules/@dannymoerkerke/src/audio-recorder.js';

You can also import the bundled version which is in dist for use with Webpack:

import './path/to/node_modules/@dannymoerkerke/dist/audio-recorder.js';

and add the tag to your page:

<audio-recorder></audio-recorder>

Attributes

  • bars: number of bars in frequency analyzer, default: 20
  • view: frequencies or waveform, default: frequencies

Styling

  • --width: width of the recorder, default: 600px
  • --height: height of the recorder, default: 300px
  • --border: border of the recorder, default: none
  • --frequency-background-color: background color of frequency analyzer, default: #ffffff
  • --frequency-bars-color: background color of frequency bars, default: #ff0000
  • --waveform-background-color: background color of waveform view, default: #ffffff
  • --waveform-color: color of waveform, default: #ff0000
  • --waveform-progress-color: color of waveform of part of file that has already played, default: #337ab7

In addition, mixins can be applied using the ::part pseudo element.

Usage:

audio-recorder::part([selector]) {

   /** css rules **/

}

Available selectors:

  • ::part(button): styles the buttons except the volume buttons
  • ::part(volume-button): styles the volume buttons
  • ::part(slider): styles the volume slider
  • ::part(time): styles the elapsed and remaining time display

The buttons and slider are part of the material-webcomponents library (https://dannymoerkerke.github.io/material-webcomponents/)

The Custom CSS properties exposed by these components can be used as part of the styling through ::part.

For example, the material-slider component exposes the properties --track-size, --track-color, --thumb-size and --thumb-color.

These can be used in combination with ::part to style the volume slider:

audio-recorder::part(slider) {
  --track-color: #000000;
  --track-size: 3px;
  --thumb-color: #000000;
  --thumb-size: 10px;
}

Demo

To run the demo, run npm install once and then npm start and view the demo on http://localhost:8080/