This component is based on the TTS service of Microsoft Edge browser, no need to apply for app_key.
Download and copy
custom_components/edge_ttsfolder tocustom_componentsfolder in your HomeAssistant config folder
# Auto install via terminal shell
wget -O - https://hacs.vip/get | DOMAIN=edge_tts REPO_PATH=hasscc/hass-edge-tts ARCHIVE_TAG=main bash -[UI: config - integrations - add integration - Microsoft Edge TTS ]
add integration 
config option 
entity 
call service 

style/styledegree/role/contourare no longer supported (#8).
action: tts.speak
target:
  entity_id: tts.edge_tts
data:
  media_player_entity_id: media_player.your_player_entity_id
  message: Hello
  language: zh-CN-XiaoyiNeural # Language or voice (Optional)action: tts.speak
target:
  entity_id: tts.edge_tts
data:
  media_player_entity_id: media_player.your_player_entity_id
  message: 吃葡萄不吐葡萄皮,不吃葡萄倒吐葡萄皮
  language: zh-CN
  cache: true
  options:
    voice: zh-CN-XiaoyiNeural
    rate: +0%
    volume: +10%
    preferred_format: mp3  # value is a file extension like wav, mp3, ogg, etccurl -X POST -H "Authorization: Bearer <ACCESS TOKEN>" \
     -H "Content-Type: application/json" \
     -d '{"engine_id": "tts.edge_tts", "message": "欢迎回家", "language": "zh-CN-XiaoyiNeural", "cache": true, "options": {"volume": "+10%"}}' \
     http://home-assistant.local:8123/api/tts_get_url