Language labels do not repair unsupported speech content

When a voice-conditioned generator loops on mixed-language text, isolate the text and language label before altering the voice reference or output limit. A label can change a control token without making unsupported characters intelligible. Compare the same text under automatic and explicit language, then a semantically equivalent supported-language version under matched seeds and a fixed reference. Track natural termination and limits separately from pitch. A supported-language rendering may resolve repeated caps without proving the original language is supported. Keep pronunciation review separate; increasing the limit does not correct the failed generation.

Applies when: diagnosing termination failures after changing speech reference conditioning. Keywords: speech synthesis reference language mixed text termination generation limit