Or you can add in lang\i18n\Dictionary.lang translations like :

Search on DynamicVolume.ui after text=", extract Speed settings, and verify in your Dictionary.lang if not already exist.
Add :
Speed settings="Translation on you lang"

Search on DynamicVolume.lua after m_i18n(", extract Dynamic Volume settings, and verify in your Dictionary.lang if not already exist.
Add :
Dynamic Volume settings="Translation on you lang"