Spoken language as an ISO 639-1 code ("en", "fr", "de", "es",
"it", "pt"). Omitted by default so the server infers it from the
voice — set it only alongside a voice that speaks it. Translated
internally to the service's language name; see
ASSEMBLYAI_TTS_LANGUAGES for the supported set. An unsupported
code fails at connect time rather than muting the session.
Spoken language as an ISO 639-1 code (
"en","fr","de","es","it","pt"). Omitted by default so the server infers it from the voice — set it only alongside a voice that speaks it. Translated internally to the service's language name; see ASSEMBLYAI_TTS_LANGUAGES for the supported set. An unsupported code fails at connect time rather than muting the session.