n8n-nodes-google-speech

This is an n8n community node for Google Speech API integration. It provides functionality to convert audio to text using Google's Speech-to-Text API.

Installation

Follow these instructions to install this node:

In official n8n version

1. Go to Settings > Community Nodes
2. Select Install
3. Enter n8n-nodes-google-speech in Enter npm package name
4. Click Install

In Docker or own setup

1. Install npm package:

npm install n8n-nodes-google-speech

2. Add node to N8N_CUSTOM_EXTENSIONS:

export N8N_CUSTOM_EXTENSIONS="/path/to/n8n-nodes-google-speech"

Prerequisites

To use this node, you need:

1. A Google Cloud account with the Speech-to-Text API enabled
2. A service account with access to the Speech API
3. A JSON key file for the service account

Setting up Google Cloud credentials:

1. Go to the Google Cloud Console
2. Create a new project or select an existing one
3. Enable the Speech-to-Text API in the API Library
4. Go to "IAM & Admin" > "Service Accounts"
5. Create a new service account or use an existing one
6. Give it the "Cloud Speech Client" role
7. Create a new JSON key (Actions > Manage keys > Add key > Create new key)
8. Download the JSON key file
9. Paste the entire contents of the JSON file into the n8n credentials field

Usage

1. Add a "Google Speech" node to your workflow
2. Select the "Speech to Text" resource and "Recognize" operation
3. Configure the credentials using your Service Account Key JSON
4. Provide audio as a base64-encoded string (without any prefix like "data:audio/...")
5. Set the language code (e.g. 'en-US', 'it-IT', 'fr-FR', etc.)
6. Run the workflow to convert speech to text

Important Notes About Audio Format:

1. The audio must be properly encoded in base64 format
2. The audio should be in a supported format (e.g., WAV, MP3, FLAC)
3. Google Speech API will attempt to auto-detect the audio format
4. For best results, use audio with clear speech and minimal background noise
5. Ensure your service account has the proper permissions for the Speech API

Resources

• Google Cloud Speech-to-Text Documentation
• n8n Community Nodes Documentation

License

MIT