Librerie client Text-to-Speech

Questa pagina mostra come iniziare a utilizzare le librerie client di Cloud per l'API Text-to-Speech. Le librerie client semplificano l'accesso alle APIGoogle Cloud da una lingua supportata. Sebbene tu possa utilizzare le APIGoogle Cloud effettuando direttamente delle richieste non elaborate al server, le librerie client forniscono semplificazioni che riducono notevolmente la quantità di codice da scrivere.

Scopri di più sulle librerie client di Cloud e sulle precedenti librerie client delle API di Google in Descrizione delle librerie client.

Installa la libreria client

C++

Per maggiori dettagli sui requisiti di questa libreria client e sull'installazione delle dipendenze, vedi Configurazione di un ambiente di sviluppo C++.

C#

Se utilizzi Visual Studio 2017 o versioni successive, apri la finestra del gestore di pacchetti NuGet e digita quanto segue:

Install-Package Google.Apis

Se utilizzi gli strumenti con interfaccia a riga di comando .NET Core per installare le dipendenze, esegui questo comando:

dotnet add package Google.Apis

Per ulteriori informazioni, vedi Configurazione di un ambiente di sviluppo C#.

Go

go get cloud.google.com/go/texttospeech/apiv1

Per ulteriori informazioni, vedi Configurazione di un ambiente di sviluppo Go.

Java

If you are using Maven, add the following to your pom.xml file. For more information about BOMs, see The Google Cloud Platform Libraries BOM.

<dependencyManagement>
  <dependencies>
    <dependency>
      <groupId>com.google.cloud</groupId>
      <artifactId>libraries-bom</artifactId>
      <version>26.70.0</version>
      <type>pom</type>
      <scope>import</scope>
    </dependency>
  </dependencies>
</dependencyManagement>

<dependencies>
  <dependency>
    <groupId>com.google.cloud</groupId>
    <artifactId>google-cloud-texttospeech</artifactId>
  </dependency>
</dependencies>

If you are using Gradle, add the following to your dependencies:

implementation 'com.google.cloud:google-cloud-texttospeech:2.78.0'

If you are using sbt, add the following to your dependencies:

libraryDependencies += "com.google.cloud" % "google-cloud-texttospeech" % "2.78.0"

If you're using Visual Studio Code, IntelliJ, or Eclipse, you can add client libraries to your project using the following IDE plugins:

The plugins provide additional functionality, such as key management for service accounts. Refer to each plugin's documentation for details.

Per ulteriori informazioni, vedi Configurazione di un ambiente di sviluppo Java.

Node.js

npm install @google-cloud/text-to-speech

Per ulteriori informazioni, consulta Configurazione di un ambiente di sviluppo Node.js.

PHP

composer require google/apiclient

Per ulteriori informazioni, consulta Utilizzo di PHP su Google Cloud.

Python

pip install --upgrade google-cloud-texttospeech

Per ulteriori informazioni, consulta Configurazione di un ambiente di sviluppo Python.

Ruby

gem install google-api-client

Per ulteriori informazioni, vedi Configurazione di un ambiente di sviluppo Ruby.

Configura l'autenticazione

Per autenticare le chiamate alle API Google Cloud , le librerie client supportano il servizio Credenziali predefinite dell'applicazione (ADC). Le librerie cercano le credenziali in una serie di località definite e le utilizzano per autenticare le richieste all'API. Con le ADC, puoi rendere disponibili le credenziali per la tua applicazione in vari ambienti, ad esempio per lo sviluppo locale o la produzione, senza dover modificare il codice dell'applicazione.

Per gli ambienti di produzione, la modalità di configurazione delle credenziali ADC dipende dal servizio e dal contesto. Per ulteriori informazioni, consulta Configura le credenziali predefinite dell'applicazione.

Per un ambiente di sviluppo locale, puoi configurare come ADC le credenziali associate al tuo Account Google:

Install the Google Cloud CLI. After installation, initialize the Google Cloud CLI by running the following command:
```
gcloud init
```
If you're using an external identity provider (IdP), you must first sign in to the gcloud CLI with your federated identity.
If you're using a local shell, then create local authentication credentials for your user account:
```
gcloud auth application-default login
```
You don't need to do this if you're using Cloud Shell.

If an authentication error is returned, and you are using an external identity provider (IdP), confirm that you have signed in to the gcloud CLI with your federated identity.

Viene visualizzata una schermata di accesso. Dopo aver eseguito l'accesso, le tue credenziali vengono archiviate nel file delle credenziali locali utilizzato da ADC.

Utilizza la libreria client

L'esempio seguente mostra come utilizzare la libreria client.

C++


#include "google/cloud/texttospeech/v1/text_to_speech_client.h"
#include <iostream>

auto constexpr kText = R"""(
Four score and seven years ago our fathers brought forth on this
continent, a new nation, conceived in Liberty, and dedicated to
the proposition that all men are created equal.)""";

int main(int argc, char* argv[]) try {
  if (argc != 1) {
    std::cerr << "Usage: " << argv[0] << "\n";
    return 1;
  }

  namespace texttospeech = ::google::cloud::texttospeech_v1;
  auto client = texttospeech::TextToSpeechClient(
      texttospeech::MakeTextToSpeechConnection());

  google::cloud::texttospeech::v1::SynthesisInput input;
  input.set_text(kText);
  google::cloud::texttospeech::v1::VoiceSelectionParams voice;
  voice.set_language_code("en-US");
  google::cloud::texttospeech::v1::AudioConfig audio;
  audio.set_audio_encoding(google::cloud::texttospeech::v1::LINEAR16);

  auto response = client.SynthesizeSpeech(input, voice, audio);
  if (!response) throw std::move(response).status();
  // Normally one would play the results (response->audio_content()) over some
  // audio device. For this quickstart, we just print some information.
  auto constexpr kWavHeaderSize = 48;
  auto constexpr kBytesPerSample = 2;  // we asked for LINEAR16
  auto const sample_count =
      (response->audio_content().size() - kWavHeaderSize) / kBytesPerSample;
  std::cout << "The audio has " << sample_count << " samples\n";

  return 0;
} catch (google::cloud::Status const& status) {
  std::cerr << "google::cloud::Status thrown: " << status << "\n";
  return 1;
}

Go


// Command quickstart generates an audio file with the content "Hello, World!".
package main

import (
	"context"
	"fmt"
	"log"
	"os"

	texttospeech "cloud.google.com/go/texttospeech/apiv1"
	"cloud.google.com/go/texttospeech/apiv1/texttospeechpb"
)

func main() {
	// Instantiates a client.
	ctx := context.Background()

	client, err := texttospeech.NewClient(ctx)
	if err != nil {
		log.Fatal(err)
	}
	defer client.Close()

	// Perform the text-to-speech request on the text input with the selected
	// voice parameters and audio file type.
	req := texttospeechpb.SynthesizeSpeechRequest{
		// Set the text input to be synthesized.
		Input: &texttospeechpb.SynthesisInput{
			InputSource: &texttospeechpb.SynthesisInput_Text{Text: "Hello, World!"},
		},
		// Build the voice request, select the language code ("en-US") and the SSML
		// voice gender ("neutral").
		Voice: &texttospeechpb.VoiceSelectionParams{
			LanguageCode: "en-US",
			SsmlGender:   texttospeechpb.SsmlVoiceGender_NEUTRAL,
		},
		// Select the type of audio file you want returned.
		AudioConfig: &texttospeechpb.AudioConfig{
			AudioEncoding: texttospeechpb.AudioEncoding_MP3,
		},
	}

	resp, err := client.SynthesizeSpeech(ctx, &req)
	if err != nil {
		log.Fatal(err)
	}

	// The resp's AudioContent is binary.
	filename := "output.mp3"
	err = os.WriteFile(filename, resp.AudioContent, 0644)
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("Audio content written to file: %v\n", filename)
}

Java

// Imports the Google Cloud client library
import com.google.cloud.texttospeech.v1.AudioConfig;
import com.google.cloud.texttospeech.v1.AudioEncoding;
import com.google.cloud.texttospeech.v1.SsmlVoiceGender;
import com.google.cloud.texttospeech.v1.SynthesisInput;
import com.google.cloud.texttospeech.v1.SynthesizeSpeechResponse;
import com.google.cloud.texttospeech.v1.TextToSpeechClient;
import com.google.cloud.texttospeech.v1.VoiceSelectionParams;
import com.google.protobuf.ByteString;
import java.io.FileOutputStream;
import java.io.OutputStream;

/**
 * Google Cloud TextToSpeech API sample application. Example usage: mvn package exec:java
 * -Dexec.mainClass='com.example.texttospeech.QuickstartSample'
 */
public class QuickstartSample {

  /** Demonstrates using the Text-to-Speech API. */
  public static void main(String... args) throws Exception {
    // Instantiates a client
    try (TextToSpeechClient textToSpeechClient = TextToSpeechClient.create()) {
      // Set the text input to be synthesized
      SynthesisInput input = SynthesisInput.newBuilder().setText("Hello, World!").build();

      // Build the voice request, select the language code ("en-US") and the ssml voice gender
      // ("neutral")
      VoiceSelectionParams voice =
          VoiceSelectionParams.newBuilder()
              .setLanguageCode("en-US")
              .setSsmlGender(SsmlVoiceGender.NEUTRAL)
              .build();

      // Select the type of audio file you want returned
      AudioConfig audioConfig =
          AudioConfig.newBuilder().setAudioEncoding(AudioEncoding.MP3).build();

      // Perform the text-to-speech request on the text input with the selected voice parameters and
      // audio file type
      SynthesizeSpeechResponse response =
          textToSpeechClient.synthesizeSpeech(input, voice, audioConfig);

      // Get the audio contents from the response
      ByteString audioContents = response.getAudioContent();

      // Write the response to the output file.
      try (OutputStream out = new FileOutputStream("output.mp3")) {
        out.write(audioContents.toByteArray());
        System.out.println("Audio content written to file \"output.mp3\"");
      }
    }
  }
}

Node.js

// Imports the Google Cloud client library
const textToSpeech = require('@google-cloud/text-to-speech');

// Import other required libraries
const {writeFile} = require('node:fs/promises');

// Creates a client
const client = new textToSpeech.TextToSpeechClient();

async function quickStart() {
  // The text to synthesize
  const text = 'hello, world!';

  // Construct the request
  const request = {
    input: {text: text},
    // Select the language and SSML voice gender (optional)
    voice: {languageCode: 'en-US', ssmlGender: 'NEUTRAL'},
    // select the type of audio encoding
    audioConfig: {audioEncoding: 'MP3'},
  };

  // Performs the text-to-speech request
  const [response] = await client.synthesizeSpeech(request);

  // Save the generated binary audio content to a local file
  await writeFile('output.mp3', response.audioContent, 'binary');
  console.log('Audio content written to file: output.mp3');
}

await quickStart();

Python

"""Synthesizes speech from the input string of text or ssml.
Make sure to be working in a virtual environment.

Note: ssml must be well-formed according to:
    https://www.w3.org/TR/speech-synthesis/
"""
from google.cloud import texttospeech

# Instantiates a client
client = texttospeech.TextToSpeechClient()

# Set the text input to be synthesized
synthesis_input = texttospeech.SynthesisInput(text="Hello, World!")

# Build the voice request, select the language code ("en-US") and the ssml
# voice gender ("neutral")
voice = texttospeech.VoiceSelectionParams(
    language_code="en-US", ssml_gender=texttospeech.SsmlVoiceGender.NEUTRAL
)

# Select the type of audio file you want returned
audio_config = texttospeech.AudioConfig(
    audio_encoding=texttospeech.AudioEncoding.MP3
)

# Perform the text-to-speech request on the text input with the selected
# voice parameters and audio file type
response = client.synthesize_speech(
    input=synthesis_input, voice=voice, audio_config=audio_config
)

# The response's audio_content is binary.
with open("output.mp3", "wb") as out:
    # Write the response to the output file.
    out.write(response.audio_content)
    print('Audio content written to file "output.mp3"')

Risorse aggiuntive

C++

Il seguente elenco contiene link ad altre risorse relative alla libreria client per C++:

C#

Il seguente elenco contiene link ad altre risorse relative alla libreria client per C#:

Go

Il seguente elenco contiene link ad altre risorse relative alla libreria client per Go:

Java

Il seguente elenco contiene link ad altre risorse relative alla libreria client per Java:

Node.js

Il seguente elenco contiene link ad altre risorse relative alla libreria client per Node.js:

PHP

Il seguente elenco contiene link ad altre risorse relative alla libreria client per PHP:

Python

Il seguente elenco contiene link ad altre risorse relative alla libreria client per Python:

Ruby

Il seguente elenco contiene link ad altre risorse relative alla libreria client per Ruby:

Librerie client Text-to-Speech Mantieni tutto organizzato con le raccolte Salva e classifica i contenuti in base alle tue preferenze.

Installa la libreria client

C++

C#

Go

Java

Node.js

PHP

Python

Ruby

Configura l'autenticazione

Utilizza la libreria client

C++

Go

Java

Node.js

Python

Risorse aggiuntive

C++

C#

Go

Java

Node.js

PHP

Python

Ruby

Librerie client Text-to-Speech