Google Clould Text-to-Speech APIの使い方

$ cd ~
$ curl https://sdk.cloud.google.com | bash

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$ source ~/.bash_profile
$ gcloud help

$ gcloud init
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Pick cloud project to use: 
 [1] inlaid-micron-234010
 [2] plenary-office-159913
 [3] sound-arcade-234009
 [4] speech-168802
 [5] tribal-archery-271617
 [6] Create a new project
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item):  Please enter a value between 1 and 6, or a value present in the list:  Please enter a value between 1 and 6, or a value present in the list:  Please enter a value between 1 and 6, or a value present in the list:  Please enter a value between 1 and 6, or a value present in the list:  4

$ gcloud auth activate-service-account --key-file=/home/you/install/google/key/speach-168802-4d5e0e2b2b34.json

$ export GOOGLE_APPLICATION_CREDENTIALS=/home/you/install/google/key/speach-168802-4d5e0e2b2b34.json

$ pip install --upgrade google-cloud-texttospeech

#!/usr/bin/env python

# Copyright 2018 Google Inc. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

"""Google Cloud Text-To-Speech API sample application .

Example usage:
    python quickstart.py
"""


def run_quickstart():
    # [START tts_quickstart]
    """Synthesizes speech from the input string of text or ssml.

    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"')
    # [END tts_quickstart]


if __name__ == "__main__":
    run_quickstart()

$ python quickstart.py
Audio content written to file "output.mp3"

$ diff quickstart.py quickstart-JP.py 
37c37
<     synthesis_input = texttospeech.SynthesisInput(text="Hello, World!")
---
>     synthesis_input = texttospeech.SynthesisInput(text="武士　木村安兵衛は　明治維新によって失業し、日本初のパン屋を開業したそうです。そこで、あんパンが発明されたみたい。")
42c42,44
<         language_code="en-US", ssml_gender=texttospeech.SsmlVoiceGender.NEUTRAL
---
>         language_code="ja-JP",
>         name="ja-JP-Wavenet-D",
>         ssml_gender=texttospeech.SsmlVoiceGender.MALE,
57c59
<     with open("output.mp3", "wb") as out:
---
>     with open("output-JP.mp3", "wb") as out:
60c62
<         print('Audio content written to file "output.mp3"')
---
>         print('Audio content was written to file "output.mp3"')