n8n Chat Sound Effects: OpenAI Prompt + ElevenLabs MP3

Turn n8n Chat messages into ready-to-play MP3 sound effects—automatically

This n8n workflow converts what someone types in n8n Chat into a detailed, ElevenLabs-ready sound-effect prompt using OpenAI, then generates an MP3 sound effect via the ElevenLabs Sound Generation API and returns it in chat with the exact prompt and settings used.

What this workflow does

• Receives a message in n8n Chat describing the sound effect the user wants.
• Uses OpenAI to rewrite the message into a single, literal sound prompt for ElevenLabs, and to propose duration and prompt-influence settings as JSON.
• Parses the JSON response; if parsing fails, it falls back to the original user text.
• Validates inputs by clamping duration to 0.5–30 seconds and prompt influence to 0–1.
• Calls ElevenLabs to generate an MP3 sound effect using the prompt + settings, with retries on failure.
• Replies in chat with the generated audio and a text summary of the prompt and settings—or returns a friendly error message if generation fails.

Use cases

• Rapid prototyping for audio cues in interactive apps and SaaS demos.
• Generating specific sound effects from chat prompts (e.g., “a heavy wooden door creaking open”).
• Building an “audio assistant” inside n8n where users request sound effects on demand.

Technical details

• OpenAI credential for the OpenAI chat model used to generate the ElevenLabs-ready prompt (and JSON settings).
• ElevenLabs HTTP request using header-auth with header name xi-api-key.
• Uses nodes including: Chat Trigger (n8nn8n-nodes-langchainchat trigger), LLM (n8nn8n-nodes-langchainchain llm), plus set, code, sticky note, and HTTP Request.

Perfect for n8n automation engineers and SaaS operators who want OpenAI + ElevenLabs sound generation from conversational input.