tts speak with Google translate seems to run partly in backgrond

[paifre]

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New to HA from Jeedom, I'm reimplementing scripts and automations
Fighting to be able to set volume of Google Cast speaker (nest mini) to announce a message (which is very unfortunately not an option), I discovered that if I put the current volume in a variable (media.set_volume), run tts.speak with Google translate then restore the initial volume right after, this is not working.
I have to set a delay after the tts.speak step and before the set_volume to restore the initial value if this step is right after. Else cast is done but with the initial volume which has overwritten the set_volume to higher level for the announce.

Sequence:

• read initial volume
• set volume to 1
• tts.speak with google_translate as entity
• set volume back to inital volume

So, imho, a mention in the documentation to add a delay (probably in relation with text length) is recommended if using set_volume right after. Else waiting for a trigger on the cast entity from playing to idle

URL

https://www.home-assistant.io/integrations/google_translate/

Version

2025.1.3

Additional information

No response