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Setting Up Google Cloud Text-to-Speech

Although there are many tools to communicate, there are two basic types of communication: written and spoken. Machine learning has made it possible to convert one to the other, resulting in speech that is very close to that of a human voice. In this hands-on lab, you'll step through the process for utilizing the Google Cloud Text-to-Speech API, transforming text in a JSON format to an audio-ready MP3 file.


Path Info

Clock icon Beginner
Clock icon 45m
Clock icon Jan 31, 2020

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Table of Contents

  1. Challenge

    Enable the Cloud Text-to-Speech API

    1. From the Google Cloud console's main navigation, choose APIs & Services > Library.
    2. Search for "text", and select Cloud Text-to-Speech API.
    3. If necessary, click Enable.
  2. Challenge

    Set Up Service Account

    1. Click Launch Editor.

    2. In the Shell Editor, expand the ai-conversations folder.

    3. Choose File > New File and name the file key.json.

    4. From this Hands-On Lab Credentials, copy the Service Account Credentials.

    5. Paste the clipboard contents into the new file, and choose File > Save.

    6. Switch to the Terminal enter the following command:

  3. Challenge

    Retrieve Working Files

    1. Activate the Cloud Shell.

    2. Retrieve the working files:

      git clone
    3. In the Cloud Shell, change directories:

      cd content-gc-ai-services-deepdive/ai-conversations/
  4. Challenge

    Send Request to Cloud Text-to-Speech API

    1. Call the Cloud Text-to-Speech API:

      curl -X POST 
      -H "Authorization: Bearer "$(gcloud auth application-default print-access-token) 
      -H "Content-Type: application/json; charset=utf-8" 
      -d @text-to-speech-request.json 
      > synthesize-text.txt 
    2. In the Shell Editor, open synthesize-text.txt.

    3. Remove the following from the beginning of the file:

        "audioContent": "
    4. From the end of the file, remove the following:

    5. Save the file.

  5. Challenge

    Convert Response to MP3

    1. In the Cloud Shell, enter the following command:

      base64 synthesize-text.txt -d > synthesized-audio.mp3
    2. Download the MP3 file to your system:

      cloudshell download synthesized-audio.mp3
    3. Click Download.

    4. Open the downloaded MP3 file to hear the results.

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