Hi there @cgj-emo
I have moved your new topic here to address everything about EMO-related issues.
Since the Living.ai dev team released Firmware Update 3.0.0 – EMO speaks more languages and recognizes objects.
More Language Support
EMO can now understand and speak 9 new languages
(with his new voice)
EN-Classic • English • 
German • 
Spanish • 
French • 
Italian • 
Japanese • 
Korean • 
Portuguese • 
Chinese • Chinese -DB • 
Russian
(More languages coming soon! )
The Chinese and other language tone of the EMO Robot may sound very different from the old/default language settings for several reasons:
1. Different voice model
When the robot switches to Chinese, it often uses a different text-to-speech (TTS) voice model.
Chinese speech synthesis needs different pronunciation rules and tone patterns, so the voice may sound higher, faster, or more expressive than in English.
2. Language tone structure
Mandarin Chinese is a tonal language, meaning the pitch of a word changes its meaning.
Because of this, the robot’s voice system adjusts pitch and rhythm much more than it does in English, which can make the tone sound quite different.
3. Software or firmware updates
Sometimes updates from Living.AI modify the robot’s voice engine.
New languages added in updates may come with new voice profiles, which can change how EMO sounds.
4. Localization changes
The developers may tune the voice to sound more natural to native Chinese speakers, which can make it feel different compared to the original “default” voice.
In short:
The tone changed because the robot uses a different speech engine and voice profile for Chinese, and tonal languages require different voice modulation.