| name | speech-use |
| description | Generate (TTS), Transcribe (STT), and Clone voices using Google's GenAI and Cloud Speech SDKs. Supports Gemini-TTS, Chirp 3, and Instant Custom Voice. |
Speech Use
Use this skill to perform Text-to-Speech (TTS), Speech-to-Text (STT), and Voice Cloning operations.
This skill uses portable Python scripts managed by uv.
Prerequisites
-
Environment Variables:
GOOGLE_API_KEY (for TTS via Gemini)GOOGLE_CLOUD_PROJECT (Required for STT and Voice Cloning)GOOGLE_APPLICATION_CREDENTIALS (Recommended for STT/Voice Cloning)
-
APIs Enabled:
- Text-to-Speech API (
texttospeech.googleapis.com)
- Speech-to-Text API (
speech.googleapis.com)
Usage
1. Generate Speech (TTS)
Generate audio from text using Gemini-TTS.
Standard Voice:
uv run skills/speech-use/scripts/generate_speech.py "Hello world, this is a test." --voice Puck --output hello.wav
Custom Voice (Cloned):
uv run skills/speech-use/scripts/generate_speech.py "This is my custom voice speaking." --voice-cloning-key "YOUR_KEY_HERE" --output custom.wav
2. Create Custom Voice (Voice Cloning)
Generate a voiceCloningKey from a reference audio file and a consent file.
Requirements:
reference.wav: 10-30s of clear speech (the voice to clone).consent.wav: The speaker saying: "I am the owner of this voice and I consent to Google using this voice to create a synthetic voice model."
uv run skills/speech-use/scripts/create_custom_voice.py --reference-audio reference.wav --consent-audio consent.wav
Save the output key to use with generate_speech.py.
3. Transcribe Audio (STT)
Transcribe audio files using Chirp 3.
uv run skills/speech-use/scripts/transcribe_audio.py audio.wav --language en-US --output transcript.txt
Options
generate_speech.py
--voice: Prebuilt voice (e.g., Kore, Puck, Fenrir, Aoede).--voice-cloning-key: Key from create_custom_voice.py.--model: Default gemini-2.5-flash-preview-tts.
transcribe_audio.py
--model: Default chirp_3.--language: Default auto.--location: Cloud region (default us).
References
Before running scripts, review the reference guides for available voices and options.
- Voices Guide - 30+ voice options with styles (Puck, Kore, Fenrir, Aoede, etc.)
