Copy pageCopy pageCopy this page as Markdown for LLMsView as MarkdownView this page as plain textOpen in ClaudeAsk questions about this pageOpen in ChatGPTAsk questions about this pageOn this pageSpeechSynthesisUtterance-1SpeechSynthesisUtterance: {(text?): SpeechSynthesisUtterance; prototype: SpeechSynthesisUtterance;}; Type Declaration Parameters ParameterTypetext?string Returns SpeechSynthesisUtterance prototype prototype: SpeechSynthesisUtterance;