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 // ListVoices lists the available text to speech voices. func ListVoices(w io.Writer) error { 	ctx := context.Background()  	client, err := texttospeech.NewClient(ctx) 	if err != nil { 		return err 	} 	defer client.Close()  	// Performs the list voices request. 	resp, err := client.ListVoices(ctx, &texttospeechpb.ListVoicesRequest{}) 	if err != nil { 		return err 	}  	for _, voice := range resp.Voices { 		// Display the voice's name. Example: tpc-vocoded 		fmt.Fprintf(w, "Name: %v\n", voice.Name)  		// Display the supported language codes for this voice. Example: "en-US" 		for _, languageCode := range voice.LanguageCodes { 			fmt.Fprintf(w, "  Supported language: %v\n", languageCode) 		}  		// Display the SSML Voice Gender. 		fmt.Fprintf(w, "  SSML Voice Gender: %v\n", voice.SsmlGender.String())  		// Display the natural sample rate hertz for this voice. Example: 24000 		fmt.Fprintf(w, "  Natural Sample Rate Hertz: %v\n", 			voice.NaturalSampleRateHertz) 	}  	return nil } 

/**  * Demonstrates using the Text to Speech client to list the client's supported voices.  *  * @throws Exception on TextToSpeechClient Errors.  */ public static List<Voice> listAllSupportedVoices() throws Exception {   // Instantiates a client   try (TextToSpeechClient textToSpeechClient = TextToSpeechClient.create()) {     // Builds the text to speech list voices request     ListVoicesRequest request = ListVoicesRequest.getDefaultInstance();      // Performs the list voices request     ListVoicesResponse response = textToSpeechClient.listVoices(request);     List<Voice> voices = response.getVoicesList();      for (Voice voice : voices) {       // Display the voice's name. Example: tpc-vocoded       System.out.format("Name: %s\n", voice.getName());        // Display the supported language codes for this voice. Example: "en-us"       List<ByteString> languageCodes = voice.getLanguageCodesList().asByteStringList();       for (ByteString languageCode : languageCodes) {         System.out.format("Supported Language: %s\n", languageCode.toStringUtf8());       }        // Display the SSML Voice Gender       System.out.format("SSML Voice Gender: %s\n", voice.getSsmlGender());        // Display the natural sample rate hertz for this voice. Example: 24000       System.out.format("Natural Sample Rate Hertz: %s\n\n", voice.getNaturalSampleRateHertz());     }     return voices;   } }

const textToSpeech = require('@google-cloud/text-to-speech');  const client = new textToSpeech.TextToSpeechClient();  const [result] = await client.listVoices({}); const voices = result.voices;  console.log('Voices:'); voices.forEach(voice => {   console.log(`Name: ${voice.name}`);   console.log(`  SSML Voice Gender: ${voice.ssmlGender}`);   console.log(`  Natural Sample Rate Hertz: ${voice.naturalSampleRateHertz}`);   console.log('  Supported languages:');   voice.languageCodes.forEach(languageCode => {     console.log(`    ${languageCode}`);   }); });

def list_voices():     """Lists the available voices."""     from google.cloud import texttospeech      client = texttospeech.TextToSpeechClient()      # Performs the list voices request     voices = client.list_voices()      for voice in voices.voices:         # Display the voice's name. Example: tpc-vocoded         print(f"Name: {voice.name}")          # Display the supported language codes for this voice. Example: "en-US"         for language_code in voice.language_codes:             print(f"Supported language: {language_code}")          ssml_gender = texttospeech.SsmlVoiceGender(voice.ssml_gender)          # Display the SSML Voice Gender         print(f"SSML Voice Gender: {ssml_gender.name}")          # Display the natural sample rate hertz for this voice. Example: 24000         print(f"Natural Sample Rate Hertz: {voice.natural_sample_rate_hertz}\n")