that micro lib will help You with web speech api

SDK for capturing utterance history.

Expand custom utterance slots of phrases, to use with Alexa Skills Kit Sample Utterances

Parse an intent utterance file, like the Alexa Skills Kit Sample Utterance file.

Deterministic post-diarization transcript structuring — speaker normalization, utterance merging, and conversation metadata (not diarization, not AI)

Utterance Resolution SDK

Text macro expansion tailored for Alexa/Lex utterance syntax.

Multi-platform Utterance Registry for Botkit

A simple utterance file to markdown text parser

React HOC for Utterance comment widget

A TypeScript library for converting AssemblyAI transcripts to ASS subtitle files with multiple display strategies (full utterance, word-by-word, karaoke, word highlight) and natural sentence splitting

utility functions that normalize utterance texts

Alexa Skill Utterance Builder GUI powered by alexa-utteranaces

Helper to create the utterance strings for an Amazon Echo skill

Simple End of Utterance (EOU) detection using LiveKit's ML model. Tells you the probability that someone is done speaking.

A React component that synthesis text into speech using Web Speech API

Expand custom utterance slots of phrases, to use with Alexa Skills Kit Sample Utterances

A Node.js library for recording audio in a browser, performing speaker detection, and emitting chunks of mp3 encoded audio representing utterances for further processing.

Client-side semantic endpointing. Know when they're done talking.

Interprete/compile *.utter files for creating a verbose library of utterances