Opsi konfigurasi untuk Live API


Bahkan dengan penerapan dasar untuk Live API, Anda dapat membangun interaksi yang menarik dan efektif bagi pengguna. Secara opsional, Anda dapat menyesuaikan pengalaman lebih lanjut dengan menggunakan opsi konfigurasi berikut:


Suara dan bahasa respons

Anda dapat membuat model merespons dalam suara tertentu dan memengaruhi model untuk merespons dalam bahasa yang berbeda-beda.

Menentukan suara respons

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Live API mendukung 30 suara HD tersintesis yang berbeda, masing-masing dengan karakteristik yang berbeda. Anda dapat melihat daftar opsi suara respons dan mendengar demo setiap suara dengan meluaskan bagian di bawah.

Jika Anda tidak menentukan suara respons, defaultnya adalah Puck.

Untuk menentukan suara respons, tetapkan nama suara dalam objek speechConfig sebagai bagian dari konfigurasi model.

Swift 


// ...

let liveModel = FirebaseAI.firebaseAI(backend: .googleAI()).liveModel(
  modelName: "gemini-2.5-flash-native-audio-preview-12-2025",
  // Configure the model to use a specific voice for its audio response.
  generationConfig: LiveGenerationConfig(
    responseModalities: [.audio],
    speech: SpeechConfig(voiceName: "VOICE_NAME")
  )
)

// ...

Kotlin 


// ...

val model = Firebase.ai(backend = GenerativeBackend.googleAI()).liveModel(
    modelName = "gemini-2.5-flash-native-audio-preview-12-2025",
    // Configure the model to use a specific voice for its audio response.
    generationConfig = liveGenerationConfig {
        responseModality = ResponseModality.AUDIO
        speechConfig = SpeechConfig(voice = Voice("VOICE_NAME"))
    }
)

// ...

Java 


// ...

LiveGenerativeModel lm = FirebaseAI.getInstance(GenerativeBackend.googleAI()).liveModel(
    "gemini-2.5-flash-native-audio-preview-12-2025",
    // Configure the model to use a specific voice for its audio response.
    new LiveGenerationConfig.Builder()
        .setResponseModality(ResponseModality.AUDIO)
        .setSpeechConfig(new SpeechConfig(new Voice("VOICE_NAME")))
        .build()
);

// ...

Web 


// ...

const ai = getAI(firebaseApp, { backend: new GoogleAIBackend() });

const liveModel = getLiveGenerativeModel(ai, {
  model: "gemini-2.5-flash-native-audio-preview-12-2025",
  // Configure the model to use a specific voice for its audio response.
  generationConfig: {
    responseModalities: [ResponseModality.AUDIO],
    speechConfig: {
      voiceConfig: {
        prebuiltVoiceConfig: { voiceName: "VOICE_NAME" },
      },
    },
  },
});

// ...

Dart 


// ...

final _liveModel = FirebaseAI.googleAI().liveGenerativeModel(
  model: 'gemini-2.5-flash-native-audio-preview-12-2025',
  // Configure the model to use a specific voice for its audio response.
  liveGenerationConfig: LiveGenerationConfig(
    responseModalities: [ResponseModalities.audio],
    speechConfig: SpeechConfig(voiceName: 'VOICE_NAME'),
  ),
);

// ...

Unity 


// ...

var liveModel = FirebaseAI.GetInstance(FirebaseAI.Backend.GoogleAI()).GetLiveModel(
    modelName: "gemini-2.5-flash-native-audio-preview-12-2025",
    // Configure the model to use a specific voice for its audio response
    liveGenerationConfig: new LiveGenerationConfig(
        responseModalities: new[] { ResponseModality.Audio },
        speechConfig: SpeechConfig.UsePrebuiltVoice("VOICE_NAME")
    )
);

// ...

Memengaruhi bahasa respons

Model Live API secara otomatis memilih bahasa yang sesuai untuk responsnya.

Jika Anda ingin model merespons dalam bahasa non-Inggris atau selalu dalam bahasa tertentu, Anda dapat memengaruhi respons model dengan menggunakan instruksi sistem seperti contoh berikut:

  • Memperkuat model bahwa bahasa selain Inggris mungkin sesuai

    Listen to the speaker carefully. If you detect a non-English language, respond
in the language you hear from the speaker. You must respond unmistakably in the
speaker's language.

  • Memberi tahu model untuk selalu merespons dalam bahasa tertentu

    RESPOND IN LANGUAGE. YOU MUST RESPOND UNMISTAKABLY IN LANGUAGE.


Transkripsi untuk input dan output audio

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Sebagai bagian dari respons model, Anda dapat menerima transkripsi input audio dan respons audio model. Anda menetapkan konfigurasi ini sebagai bagian dari konfigurasi model.

  • Untuk transkripsi input audio, tambahkan inputAudioTranscription.

  • Untuk transkripsi respons audio model, tambahkan outputAudioTranscription.

Perhatikan hal berikut:

  • Anda dapat mengonfigurasi model untuk menampilkan transkripsi input dan output (seperti yang ditunjukkan dalam contoh berikut), atau Anda dapat mengonfigurasinya untuk menampilkan salah satu transkripsi saja.

  • Transkrip di-streaming bersama dengan audio, jadi sebaiknya kumpulkan transkrip seperti Anda mengumpulkan bagian teks di setiap giliran.

  • Bahasa transkripsi disimpulkan dari input audio dan respons audio model.

Swift 


// ...

let liveModel = FirebaseAI.firebaseAI(backend: .googleAI()).liveModel(
  modelName: "gemini-2.5-flash-native-audio-preview-12-2025",
  // Configure the model to return transcriptions of the audio input and output.
  generationConfig: LiveGenerationConfig(
    responseModalities: [.audio],
    inputAudioTranscription: AudioTranscriptionConfig(),
    outputAudioTranscription: AudioTranscriptionConfig()
  )
)

var inputTranscript: String = ""
var outputTranscript: String = ""

do {
  let session = try await liveModel.connect()
  for try await response in session.responses {
    if case let .content(content) = response.payload {
      if let inputText = content.inputAudioTranscription?.text {
        // Handle transcription text of the audio input.
        inputTranscript += inputText
      }

      if let outputText = content.outputAudioTranscription?.text {
        // Handle transcription text of the audio output.
        outputTranscript += outputText
      }

      if content.isTurnComplete {
        // Log the transcripts after the current turn is complete.
        print("Input audio: \(inputTranscript)")
        print("Output audio: \(outputTranscript)")

        // Reset the transcripts for the next turn.
        inputTranscript = ""
        outputTranscript = ""
      }
    }
  }


} catch {
  // Handle error
}

// ...

Kotlin 


// ...

val liveModel = Firebase.ai(backend = GenerativeBackend.googleAI()).liveModel(
    modelName = "gemini-2.5-flash-native-audio-preview-12-2025",
    // Configure the model to return transcriptions of the audio input and output.
    generationConfig = liveGenerationConfig {
        responseModality = ResponseModality.AUDIO
        inputAudioTranscription = AudioTranscriptionConfig()
        outputAudioTranscription = AudioTranscriptionConfig()
   }
)

val liveSession = liveModel.connect()

fun handleTranscription(input: Transcription?, output: Transcription?) {
    input?.text?.let { text ->
        // Handle transcription text of the audio input.
        println("Input Transcription: $text")
    }
    output?.text?.let { text ->
        // Handle transcription text of the audio output.
        println("Output Transcription: $text")
    }
}

liveSession.startAudioConversation(null, ::handleTranscription)

// ...

Java 


// ...

ExecutorService executor = Executors.newFixedThreadPool(1);

LiveGenerativeModel lm = FirebaseAI.getInstance(GenerativeBackend.googleAI()).liveModel(
    "gemini-2.5-flash-native-audio-preview-12-2025",
    // Configure the model to return transcriptions of the audio input and output.
    new LiveGenerationConfig.Builder()
            .setResponseModality(ResponseModality.AUDIO)
            .setInputAudioTranscription(new AudioTranscriptionConfig())
            .setOutputAudioTranscription(new AudioTranscriptionConfig())
            .build()
    );

LiveModelFutures liveModel = LiveModelFutures.from(lm);
ListenableFuture sessionFuture = liveModel.connect();

Futures.addCallback(sessionFuture, new FutureCallback() {
    @Override
    public void onSuccess(LiveSessionFutures ses) {
        LiveSessionFutures session = ses;
        session.startAudioConversation((Transcription input, Transcription output) -> {
            if (input != null) {
                // Handle transcription text of the audio input.
                System.out.println("Input Transcription: " + input.getText());
            }
            if (output != null) {
                // Handle transcription text of the audio output.
                System.out.println("Output Transcription: " + output.getText());
            }
            return null;
        });
    }

    @Override
    public void onFailure(Throwable t) {
        // Handle exceptions
        t.printStackTrace();
    }
}, executor);

// ...

Web 


// ...

const ai = getAI(firebaseApp, { backend: new GoogleAIBackend() });

const liveModel = getLiveGenerativeModel(ai, {
  model: 'gemini-2.5-flash-native-audio-preview-12-2025',
  // Configure the model to return transcriptions of the audio input and output.
  generationConfig: {
    responseModalities: [ResponseModality.AUDIO],
    inputAudioTranscription: {},
    outputAudioTranscription: {},
  },
});

const liveSession = await liveModel.connect();

liveSession.sendAudioRealtime({ data, mimeType: "audio/pcm" });

const messages = liveSession.receive();
for await (const message of messages) {
  switch (message.type) {
    case 'serverContent':
      if (message.inputTranscription) {
        // Handle transcription text of the audio input.
        console.log(`Input transcription: ${message.inputTranscription.text}`);
      }
      if (message.outputTranscription) {
        // Handle transcription text of the audio output.
        console.log(`Output transcription: ${message.outputTranscription.text}`);
      } else {
      	 // Handle other message types (modelTurn, turnComplete, interruption).
      }
    default:
      // Handle other message types (toolCall, toolCallCancellation).
  }
}

// ...

Dart 


// ...

final _liveModel = FirebaseAI.googleAI().liveGenerativeModel(
  model: 'gemini-2.5-flash-native-audio-preview-12-2025',
  // Configure the model to return transcriptions of the audio input and output.
  liveGenerationConfig: LiveGenerationConfig(
    responseModalities: [ResponseModalities.audio],
    inputAudioTranscription: AudioTranscriptionConfig(),
    outputAudioTranscription: AudioTranscriptionConfig(),
  ),
);

final LiveSession _session = _liveModel.connect();

await for (final response in _session.receive()) {
  LiveServerContent message = response.message;
  if (message.inputTranscription?.text case final inputText?) {
    // Handle transcription text of the audio input.
    print('Input: $inputText');
  }

  if (message.outputTranscription?.text case final outputText?) {
    // Handle transcription text of the audio output.
    print('Output: $outputText');
  }
}

// ...

Unity 


// ...

var liveModel = FirebaseAI.GetInstance(FirebaseAI.Backend.GoogleAI()).GetLiveModel(
    modelName: "gemini-2.5-flash-native-audio-preview-12-2025",
    // Configure the model to return transcriptions of the audio input and output
    liveGenerationConfig: new LiveGenerationConfig(
        responseModalities: new[] { ResponseModality.Audio },
        inputAudioTranscription: new AudioTranscriptionConfig(),
        outputAudioTranscription: new AudioTranscriptionConfig()
    )
);

try
{
    var session = await liveModel.ConnectAsync();
    var stream = session.ReceiveAsync();
    await foreach (var response in stream) {
        if (response.Message is LiveSessionContent sessionContent) {
            if (!string.IsNullOrEmpty(sessionContent.InputTranscription?.Text)) {
              // handle transcription text of input audio
            }

            if (!string.IsNullOrEmpty(sessionContent.OutputTranscription?.Text)) {
              // handle transcription text of output audio
            }
        }
    }
}
catch (Exception e)
{
    // Handle error
}

// ...


Deteksi aktivitas suara (VAD)

Model ini secara otomatis melakukan deteksi aktivitas suara (VAD) pada aliran input audio yang berkelanjutan. VAD diaktifkan secara default.


Pengelolaan sesi

Pelajari topik terkait sesi berikut: