Which SDK object should you use to specify the target language for speech translation?

The SpeechTranslationConfig object is specifically designed to handle settings related to speech translation, including the specification of the target language. When you want to translate spoken language into another language using the Azure Speech Service, the SpeechTranslationConfig object allows you to define both the source language (if not detected automatically) and the target language into which you want the speech to be translated. This dedicated configuration is essential for ensuring the accuracy of the translation process.

In contrast, while the SpeechConfig object deals with general settings for speech recognition and synthesis, it does not specifically cater to translation scenarios. AudioConfig focuses on audio input configurations and does not handle language specifications. The TranslationRecognizer, while responsible for performing the translation itself, relies on the settings provided in the SpeechTranslationConfig to function correctly in terms of language handling. Thus, the SpeechTranslationConfig is the appropriate and necessary choice for defining the target language in a speech translation context.