Lexicon

Source: src/AWS/Polly/Lexicon.ts

An Amazon Polly pronunciation lexicon — a W3C PLS document stored in a region that customizes how SynthesizeSpeech pronounces specific words. Identity is the region-scoped lexiconName; the PLS content is updatable in place.

Managing Lexicons

Store a pronunciation lexicon

const lexicon = yield* AWS.Polly.Lexicon("Acronyms", {
  lexiconName: "acronyms",
  content: `<?xml version="1.0" encoding="UTF-8"?>
<lexicon version="1.0" xmlns="http://www.w3.org/2005/01/pronunciation-lexicon"
         alphabet="ipa" xml:lang="en-US">
  <lexeme><grapheme>W3C</grapheme><alias>World Wide Web Consortium</alias></lexeme>
</lexicon>`,
});

Synthesize speech with the lexicon applied

const synthesizeSpeech = yield* AWS.Polly.SynthesizeSpeech();
const result = yield* synthesizeSpeech({
  OutputFormat: "mp3",
  VoiceId: "Joanna",
  Text: "The W3C maintains the PLS standard.",
  LexiconNames: [lexicon.lexiconName],
});