Voice Design

Create a custom voice with full parameter controls and receive both an audio preview and a reusable voice ID.

Overview

The Voice Design node provides comprehensive control over voice synthesis via the ElevenLabs Text-to-Voice Design API. Unlike Voice Remix (which uses only a text description), Voice Design exposes model selection, loudness, guidance scale, seed, and quality parameters for precise voice creation. The output includes both an audio preview and a generatedVoiceId that can be fed into Text to Speech nodes for ongoing use.

Configuration

Field	Type	Default	Description
Voice Description	string (textarea)	""	Natural language description of the desired voice characteristics
Preview Text	string (100-1000 chars)	""	Text the generated voice will speak in the preview. Must be between 100 and 1000 characters
Model	VoiceDesignModel	"eleven_ttv_v3"	Voice generation model: eleven_ttv_v3 (recommended) or eleven_multilingual_ttv_v2
Loudness	number (-1 to 1)	0	Output volume adjustment. Negative values produce quieter output, positive values produce louder output
Guidance Scale	number (0-100)	5	How strictly the model follows the voice description. Higher values are more literal, lower values are more creative
Seed	number (optional)	–	Random seed for reproducible results. Omit for random generation
Quality	number (optional)	–	Output quality setting (model-dependent)
Enhance Audio	boolean	false	Post-process the output to improve audio clarity

Inputs & Outputs

• Input: in – optional upstream connection for dynamic text via field mapping
• Outputs:
• audio – audio preview of the designed voice speaking the preview text (URL)
• voiceId – the generated voice ID string, reusable in Text to Speech and other voice nodes

  Best Practices

• Use the eleven_ttv_v3 model for best quality and widest language support. Fall back to eleven_multilingual_ttv_v2 only if v3 produces unexpected results for a specific use case.
• Keep Guidance Scale at 5 for a good balance. Increase it (toward 20-30) if the voice description is precise and you want the model to follow it closely. Decrease it (toward 1-2) for more natural, less constrained output.
• Set a seed value when you find a voice you like so you can reproduce it later. Without a seed, each run generates a slightly different voice.
• The Preview Text must be 100-1000 characters. Write enough text to hear the voice across different sounds and sentence structures.
• Enable Enhance Audio for final production runs, but leave it off during rapid iteration to save processing time.

Common Use Cases

• Creating a custom brand voice with reproducible parameters for consistent use across a project
• Designing character voices with specific acoustic properties (loudness, tone, delivery)
• Generating a reusable voice ID to use across multiple Text to Speech nodes
• Fine-tuning voice characteristics through iterative parameter adjustment
• Building a library of custom voices by saving the generated voice IDs

Tips

• The dual output handles (audio and voiceId) are what distinguish this node from Voice Remix. The voiceId output can be connected to downstream Text to Speech nodes, enabling a design-once-use-many workflow.
• Loudness is relative to the model’s default output level. Use it to normalize volume across different generated voices.
• The Guidance Scale behaves similarly to classifier-free guidance in image generation – very high values can reduce quality while increasing adherence to the description.
• When providing a seed, the same seed + description + model combination should produce the same voice. Changing any parameter may produce a different voice even with the same seed.
• This node uses the ElevenLabs POST /v1/text-to-voice/design endpoint directly, not.