Blazor SpeechToText Component

A lightweight and efficient Speech-to-Text component for real-time voice-to-text conversion.

Uses the Web Speech API for accurate and seamless speech recognition.

Provides a simple button with visual indicators for easy interaction.

Offers customization options for UI elements and speech recognition settings.

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Overview

The Blazor SpeechToText converts speech into text in real-time using the Web Speech API. It has built-in features such as live transcription, multi-language support, predefined styles, tooltips, and customizable UI for an intuitive user experience.

Blazor SpeechToText demo

Blazor SpeechToText component

Transcription

The SpeechToText component continuously converts audio input into text in real-time, supporting both interim and final results for smooth transcription. This makes it ideal for applications like dictation, voice commands, and live captions.

Blazor SpeechToText transcription

Blazor SpeechToText interim results

Interim results

Interim results provide live feedback while the user is speaking. These temporary transcriptions allow users to see the speech-to-text process in real-time before the final result is received.

Listening state

The SpeechToText component supports the three states listed below.

Inactive: Idle state with no active speech recognition.
Listening: Captures and transcribes speech with a stop icon and blinking animation.
Stopped: Recognition ends, displaying the final transcript.

Blazor SpeechToText listening state

Blazor SpeechToText language

Language

This feature supports multiple languages and users can transcribe speech in their preferred language.

Tooltips

Tooltips display information when hovering over items, enhancing user experience. Tooltips can be customized using tooltip settings to provide custom information about start and stop listening states.

Blazor SpeechToText tooltips

Blazor SpeechToText icon with text

Icon with text button

In Blazor SpeechToText, buttons with an icon to the right or left of the button text or an icon-only button are supported.

Predefined styles

The following predefined styles are available in the Blazor SpeechToText button:

Primary
Secondary
Outline
Flat

Any of these styles can be used based on the application.

Blazor SpeechToText styles

Built-in themes

The Blazor SpeechToText component supports these built-in themes: Tailwind CSS, Bootstrap 5, Bootstrap 4, Bootstrap, Material, Fabric, Fluent, and high contrast. Users can customize these built-in themes or create new themes to achieve the desired look and feel by overriding SASS variables or using the Theme Studio application.

Theme Studio application

Accessibility

Full support for WAI-ARIA accessibility practices for screen readers and assistive devices.
UI visual elements such as foreground color, background color, line spacing, text, and images are designed based on WCAG 2.0 standards.
Right-to-left (RTL) text rendering can be set for users of RTL languages like Hebrew, Arabic, or Persian.

Developer-friendly APIs

The Blazor SpeechToText component offers APIs and templates for customizing its appearance and behavior. With these APIs, developers can create a unique and highly customized SpeechToText that fits seamlessly into their applications.

Blazor SpeechToText code example

Easily get started with the Blazor SpeechToText using a few simple lines of C# code, as demonstrated in the following example. Also explore our Blazor SpeechToText example, which shows how to render and configure the Blazor SpeechToText component.

razor
@using Syncfusion.Blazor.Inputs
 
<SfSpeechToText @bind-Transcript="@Transcript"> </SfSpeechToText>
 
<p> Your transcribed text: - @Transcript <p>
 
@code {
    private string Transcript = String.Empty;
}

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