react-voice-visualizer (Demo App)

Overview

The react-voice-visualizer library offers a comprehensive and highly customizable solution for capturing, visualizing, and manipulating audio recordings within your web applications. Built with React hook and component, this library simplifies the process of integrating audio recording and visualization functionalities using the Web Audio API.

Experience the Demo App: Click here to explore the react-voice-visualizer. Try it out and see it in action!

Key Features:

• Audio Recording: Easily capture audio recordings with minimal setup using React hook and component.

• Visualization: Visualize audio data in real-time, making it suitable for applications such as voice recognition, sound analysis, and more.

• Customization: The library is absolutely customizable, allowing you to tailor the audio recording and visualization components to fit your project's unique requirements.

• Responsiveness: Create audio applications that adapt seamlessly to various screen sizes and devices, ensuring a consistent user experience across platforms.

This README provides a comprehensive guide to effectively utilizing the library's features.

Installation

To integrate the React Voice Visualizer library into your project, simply install it via npm or yarn:

npm install react-voice-visualizer

or

yarn add react-voice-visualizer

Demo App

For a live demonstration of the React Voice Visualizer library, you can check out the Demo Voice Visualizer App. This app showcases various features and functionalities of the library in action.

Feel free to explore the demo app to see how the React Voice Visualizer can be used in different scenarios. You can refer to the source code of the demo app for additional examples and inspiration for using the library effectively.

Usage

To start using the VoiceVisualizer component, you will need to import the necessary hook and component from the library. Here's an example of how to use this library in your App component:

import { useEffect } from "react";
import { useVoiceVisualizer, VoiceVisualizer } from "react-voice-visualizer";

const App = () => {
    // Initialize the recorder controls using the hook
    const recorderControls = useVoiceVisualizer();
    const {
        // ... (Extracted controls and states, if necessary)
        recordedBlob,
        error,
        audioRef,
    } = recorderControls;

    // Get the recorded audio blob
    useEffect(() => {
        if (!recordedBlob) return;

        console.log(recordedBlob);
    }, [recordedBlob, error]);

    // Get the error when it occurs
    useEffect(() => {
        if (!error) return;

        console.log(error);
    }, [error]);

    return (
        <VoiceVisualizer controls={recorderControls} ref={audioRef}/>
    );
};

export default App;

Additionally, you can use the setPreloadedAudioBlob function to load any audio data. Pass your audio data in a Blob format to this function:

setPreloadedAudioBlob(audioBlob);

Example:

import { useEffect } from 'react';
import { useVoiceVisualizer, VoiceVisualizer } from 'react-voice-visualizer';

const App = () => {
    const recorderControls = useVoiceVisualizer();
    const {
        // ... (Extracted controls and states, if necessary)
        setPreloadedAudioBlob,
        error,
        audioRef
    } = recorderControls;

    useEffect(() => {
        // Set the preloaded audioBlob when the component mounts
        // Assuming 'audioBlob' is defined somewhere
        if (audioBlob) {
            setPreloadedAudioBlob(audioBlob);
        }
    }, [audioBlob]);

    // Get and log any error when it occurs
    useEffect(() => {
        if (!error) return;

        console.log(error);
    }, [error]);

    return (
        <VoiceVisualizer controls={recorderControls} ref={audioRef}/>
    );
};

export default App;

Getting started

1. Import the required components and hooks from the library.
2. Initialize the recorder controls using the useVoiceVisualizer hook.
3. Use the provided state and functions to manage audio recording and playback.
4. Render the VoiceVisualizer component to display the real-time audio visualization.
5. Use the provided buttons to start, pause, stop, and save the audio recording.

Remember to include necessary CSS styles to customize the components and buttons according to your design preferences.

API Reference

useVoiceVisualizer() Hook

A hook that provides recorder controls and state for audio visualization.

Usage

const recorderControls = useVoiceVisualizer();

Returns

| Returns | Type | Description | | :-------------------------------- |:----------------------------------------------------|:--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | isRecordingInProgress | boolean | Indicates if audio recording is currently in progress. | | isPausedRecording | boolean | Indicates if audio recording is currently paused. | | audioData | Uint8Array | Audio data for real-time visualization. | | recordingTime | number | Elapsed time during recording in seconds. | | mediaRecorder | MediaRecorder \| null | MediaRecorder instance used for recording audio. | | duration | number | Duration of the recorded audio in seconds. | | currentAudioTime | number | Current playback time of the recorded audio. | | audioSrc | string | Source URL of the recorded audio file for playback. | | isPausedRecordedAudio | boolean | Indicates if recorded audio playback is paused. | | isProcessingRecordedAudio | boolean | Indicates if the recorded audio is being processed. | | isCleared | boolean | Indicates if the canvas has been cleared. | | recordedBlob | Blob \| null | Recorded audio data in Blob format. | | bufferFromRecordedBlob | AudioBuffer \| null | Audio buffer from the recorded Blob. | | setPreloadedAudioBlob | (audioBlob: Blob) => void | This function allows you to load an existing audio blob for further processing, playback and visualization. The audioBlob parameter represents the recorded audio data stored in a Blob format. | | startRecording | () => void | Function to start audio recording. | | togglePauseResume | () => void | Function to toggle pause/resume during recording and playback of recorded audio. | | stopRecording | () => void | Function to stop audio recording. | | saveAudioFile | () => void | This function allows you to save the recorded audio as a webm file format. Please note that it supports saving audio only in the webm format. If you need to save the audio in a different format, you can use external libraries like FFmpeg to convert the Blob to your desired format. This flexibility allows you to tailor the output format according to your specific needs. | | clearCanvas | () => void | Function to clear the visualization canvas. | | error | Error \| null | Error object if any error occurred during recording or playback. | | _handleTimeUpdate | () => void | Internal function to handle audio time updates during playback. | | audioRef | MutableRefObject<HTMLAudioElement \| null> | Reference to the audio element used for playback. |

Load and visualize any Audio

You can use the setPreloadedAudioBlob function to load any audio data. Pass your audio data as a Blob to this function:

setPreloadedAudioBlob(audioBlob);

VoiceVisualizer Component

A component that visualizes the real-time audio audio wave during recording.

Props for AudioVisualizer Component

| Props | Description | Default | Type | |:--------------------------------------------------|:--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|:--------------|:-----------------------------| | controls | Provides the audio recording controls and states required for visualization. | - | Controls (Required) | | ref | A reference to the audio element - audioRef from the useVoiceVisualizer hook. | - | React.RefObject (Required) | | height | The height of the visualization canvas. | 200 | string \| number (Optional) | | width | The width of the visualization canvas. | 100% | string \| number (Optional) | | backgroundColor | The background color of the visualization canvas. | transparent | string (Optional) | | mainBarColor | The color of the main audio wave line. | #FFFFFF | string (Optional) | | secondaryBarColor | The secondary color of the audio wave line. | #5e5e5e | string (Optional) | | speed | The speed of the audio visualization animation (Integer from 1 to 6, higher number is slower). | 3 | number (Optional) | | barWidth | The width of each audio wave bar. | 2 | number (Optional) | | gap | The gap between each audio wave bar. | 1 | number (Optional) | | rounded | The border radius of the audio wave bars. | 5 | number (Optional) | | isControlPanelShown | Whether to display the audio control panel, including features such as recorded audio duration, current recording time, and control buttons. If you want to create your own UI, set it to false and utilize functions from the useVoiceVisualizer hook to manage audio control. | true | boolean (Optional) | | isDownloadAudioButtonShown | Whether to display the Download audio button. | false | boolean (Optional) | | fullscreen | Whether the visualization should be displayed in fullscreen mode. It begins from the center by default. | false | boolean (Optional) | | animateCurrentPick | Whether to animate the current pick in the visualization. | true | boolean (Optional) | | onlyRecording | Whether to show the visualization only during voice recording. | false | boolean (Optional) | | isDefaultUIShown | Whether to show a default UI on Canvas before recording. If you want to create your own UI, set it to false. | true | boolean (Optional) | | canvasContainerClassName | The CSS class name for the container of the visualization canvas. | - | string (Optional) | | isProgressIndicatorShown | Whether to show the progress indicator after recording. | true | boolean (Optional) | | progressIndicatorClassName | The CSS class name for the progress indicator. | - | string (Optional) | | isProgressIndicatorTimeShown | Whether to show the progress indicator time. | true | boolean (Optional) | | progressIndicatorTimeClassName | The CSS class name for the progress indicator with time. | - | string (Optional) | | isProgressIndicatorOnHoverShown | Whether to show the progress indicator on hover. | true | boolean (Optional) | | progressIndicatorOnHoverClassName | The CSS class name for the progress indicator on hover. | - | string (Optional) | | isProgressIndicatorTimeOnHoverShown | Whether to show the progress indicator time on hover. | true | boolean (Optional) | | progressIndicatorTimeOnHoverClassName | The CSS class name for the progress indicator with time on hover. | - | string (Optional) | | isAudioProcessingTextShown | Whether to show the audio processing text. | true | boolean (Optional) | | audioProcessingTextClassName | The CSS class name for the audio processing text. | - | string (Optional) | | controlButtonsClassName | The CSS class name for the Clear Button and Download Audio button components. | - | string (Optional) |

License

This library is distributed under the MIT License.

Issues

If you encounter any bugs or have suggestions for improvements, please report them in the GitHub Issues section.

Support

For support or general questions, you can reach out to [email protected].

If you find my project valuable and would like to support its development, you can buy me a coffee ☕. Your contribution helps keep this project active and growing.

Your contribution is greatly appreciated! ❤️🚀

Credits

This library was created by Yurii Zarytskyi.