Explanation:

You are developing a speech translation service for recording lectures given in English (United Kingdom).
The goal is to provide transcripts in multiple target languages: English, French, Spanish, and German.
Key requirements from the code snippet:
Source Language (Recognition Language):
config.SpeechRecognitionLanguage = " en-GB " ;
The input is English (UK).
Target Languages:
You need to define a list of supported target languages. Since English, French, Spanish, and German are supported, the correct syntax is:
var lang = new List < string > () { " en " , " fr " , " de " , " es " }; This uses ISO language codes expected by the Translator API ( " fr " = French, " de " = German, " es " = Spanish).
Recognizer Type:
Since this is speech translation, you must use:
using var recognizer = new TranslationRecognizer(config, audioConfig);
The TranslationRecognizer class is specifically for translating speech input into multiple languages.
Completed Code
static async Task TranslateSpeechAsync ()
{
var config = SpeechTranslationConfig.FromSubscription( " 69cad5cc-0ab3-4704-bdff-abf4aa07d85 " , " uksouth " ); var lang = new List < string > () { " en " , " fr " , " de " , " es " }; config.SpeechRecognitionLanguage = " en-GB " ; lang.ForEach(config.AddTargetLanguage); using var audioConfig = AudioConfig.FromDefaultMicrophoneInput(); using var recognizer = new TranslationRecognizer(config, audioConfig); var result = await recognizer.RecognizeOnceAsync(); if (result.Reason == ResultReason.TranslatedSpeech)
{
foreach ( var element in result.Translations)
{
AppendToTranscriptFile(element.Value, element.Key);
}
}
}
Final Answer (Answer Area Selections)
First Blank: { " en " , " fr " , " de " , " es " }
Second Blank: TranslationRecognizer
Microsoft References
Speech Translation with Speech SDK
TranslationRecognizer class
Speech service supported languages