🎧 React Audio Visualizer

A customizable React package for real-time audio visualization, supporting multiple visualization types and audio sources

Features • Installation • Usage • Contributing • License

✨ Features

• 🎨 Multiple visualization types (waveform, frequency bars, circular)
• 🎤 Support for both audio file playback and microphone input
• ⚡️ Smooth animations with efficient canvas rendering
• 📱 Fully responsive design
• 📝 TypeScript support with complete type definitions
• 🎨 Customizable styles, colors, and animations
• 🔊 Built with Web Audio API for high-performance audio processing

🛠️ Installation

npm install react-audio-visualizer-pro
# or
yarn add react-audio-visualizer-pro

Usage Examples

Basic Audio File Visualization

import { WaveformVisualizer } from 'react-audio-visualizer-pro';

function App() {
  return (
    <WaveformVisualizer
      audioUrl="/path/to/audio.mp3"
      width={800}
      height={200}
      backgroundColor="#000000"
    />
  );
}

Microphone Input with Frequency Bars

import { FrequencyVisualizer } from 'react-audio-visualizer-pro';

function App() {
  return (
    <FrequencyVisualizer
      useMicrophone={true}
      width={800}
      height={200}
      backgroundColor="#000"
      gradientColors={['#ff0000', '#00ff00', '#0000ff']}
      barWidth={4}
      barSpacing={1}
      barRadius={2}
    />
  );
}

Circular Visualization with Custom Animation

import { CircularVisualizer } from 'react-audio-visualizer-pro';

function App() {
  return (
    <CircularVisualizer
      audioUrl="/path/to/audio.mp3"
      width={800}
      height={800}
      backgroundColor="#000"
      animationSpeed={1.5}
      barWidth={2}
    />
  );
}

API Reference

Common Props

All visualizer components accept these common props:

Prop	Type	Default	Description
audioUrl	string	undefined	URL to the audio file to visualize
useMicrophone	boolean	false	Use microphone input instead of audio file
width	number	800	Canvas width in pixels
height	number	200	Canvas height in pixels
backgroundColor	string	‘#1a1a2e’	Background color of the visualizer
gradientColors	string[]	[‘#00bcd4’, ‘#4CAF50’, ‘#8BC34A’]	Array of colors for gradient effect
barWidth	number	3	Width of visualization bars
barSpacing	number	2	Spacing between bars (frequency only)
barRadius	number	0	Border radius of bars (frequency only)
smoothingTimeConstant	number	0.8	Audio analysis smoothing (0-1)
fftSize	number	2048	FFT size for frequency analysis
minDecibels	number	-90	Minimum decibel value
maxDecibels	number	-10	Maximum decibel value
animationSpeed	number	1	Animation speed multiplier (circular only)

Component-Specific Features

WaveformVisualizer

• Displays audio waveform in real-time
• Best for viewing audio amplitude over time
• Smooth line rendering with customizable thickness

FrequencyVisualizer

• Shows frequency spectrum as vertical bars
• Support for gradient colors
• Customizable bar width, spacing, and radius

CircularVisualizer

• Circular frequency visualization
• Rotating animation with adjustable speed
• Radial gradient support

Development

1. Clone the repository
2. Install dependencies: npm install
3. Build the package: npm run build
4. Run tests: npm test

License

MIT