Google Cloud Text-to-Speech Integration for Speech Synthesis

Google Cloud Text-to-Speech Integration for Speech Synthesis Google Cloud TTS offers 380+ voices in 50+ languages. Neural2 and Studio voices are the most natural in Google's portfolio. Wavenet voices offer excellent quality at a reasonable price. In Russian: ru-RU-Wavenet-A/B/C/D voices. ### Voice Types | Type | Quality | Price | Example | |-----|---------|----------| | Standard | Basic | $4/1M chars | ru-RU-Standard-A | | Wavenet | Good | $16/1M chars | ru-RU-Wavenet-D | | Neural2 | Excellent | $16/1M chars | ru-RU-Neural2-A | | Studio | Best | $160/1M chars | ru-RU-Studio-* | ### Basic Integration

from google.cloud import texttospeech

client = texttospeech.TextToSpeechClient()

def synthesize(text: str, voice_name: str = "ru-RU-Wavenet-D") -> bytes:
    synthesis_input = texttospeech.SynthesisInput(text=text)

    voice = texttospeech.VoiceSelectionParams(
        language_code="ru-RU",
        name=voice_name,
    )
    audio_config = texttospeech.AudioConfig(
        audio_encoding=texttospeech.AudioEncoding.MP3,
        speaking_rate=1.0,   # 0.25–4.0
        pitch=0.0,           # -20.0–20.0 полутонов
        volume_gain_db=0.0,  # -96.0–16.0 дБ
        effects_profile_id=["telephony-class-application"]  # для IVR
    )

    response = client.synthesize_speech(
        input=synthesis_input,
        voice=voice,
        audio_config=audio_config
    )
    return response.audio_content
```### SSML for intonation control```python
ssml_text = """
<speak>
  Ваш заказ номер <say-as interpret-as="characters">A1234</say-as>
  подтверждён на <say-as interpret-as="date" format="dd.MM.yyyy">01.03.2024</say-as>.
  <break time="500ms"/>
  Сумма к оплате: <say-as interpret-as="currency" language="ru-RU">1500 RUB</say-as>.
</speak>
"""
synthesis_input = texttospeech.SynthesisInput(ssml=ssml_text)
```Timeframe: 1 day (basic integration), 2–3 days (with SSML and caching).