Amazon Polly

• converts text into life-like speech (no translation)
• Type:
  • standard: Concatenative (phonemes)
  • neural: phonemes ⇒ spectrograms ⇒ vocoder ⇒ audio
• output: PCM, MP3….
• Use speech synthesis markup language (SSML) for additional control over how polly generates speech
  • emphasize
  • certain pronunciation
  • exaggerate
  • …