Nodaro DocsText to Audio
Generate a sound effect or an ambience from a text description with ElevenLabs Sound Effects, up to 22 seconds long, with gapless loops for backgrounds.
The Text to Audio node generates a sound effect or an ambience from a text description. It runs the ElevenLabs Sound Effects model: you describe the sound, set its length, and the node returns an audio clip. Turn on Loop for a background, such as rain or a crowd, that repeats without a seam.
When to use it
- Sound effects for a video: footsteps, a door, an impact.
- Ambient backgrounds: a forest, a city street, the ocean.
- Interface and notification sounds.
- Looping beds that repeat without a gap, under a podcast or a video.
- Sound textures for motion graphics.
To add matching sound to an existing video in one step, use Video SFX.
Quick start
Add the node
Press Tab on the canvas and choose Audio › Sound Effects › Text to Audio.
Describe the sound
Open the settings panel and write the Prompt, for example "heavy rain on a tin roof". Describe the sound itself, not the story around it.
Set the length
Set Duration (seconds), from 0.5 to 22. For a background that repeats, set Loop to On (seamless loop).
Run it
Click Run on the node. The sound appears on the node with a player.
Inputs
| Input | Accepts | What it does |
|---|---|---|
| Prompt | Text nodes, such as Text and Generate Text - Any LLM | The description of the sound, instead of the Prompt field. |
| Audio style | Audio pickers, such as Music Mood and Tone | Adds the pickers' wording to the description. |
The output, Audio, is the URL of the generated sound.
Settings
| Setting | What it does |
|---|---|
| Prompt | The description of the sound, up to 450 characters. |
| Provider | The sound model. ElevenLabs SFX v2 is the only choice. |
| Duration (seconds) | From 0.5 to 22 seconds, in steps of 0.5. The default is 10. |
| Loop | Off (the default) or On (seamless loop). On makes a clip whose end joins its start without a gap. |
| Prompt Influence | From 0 (more random) to 1 (more faithful). The default is 0.3. How literally the model follows the description. |
| Pre & post text | Text that is always added before and after the description. It is hidden from people who use your workflow as an app. See Prompt pre and post text. |
Models
| Model | Maker | Modes | Credits | Details |
|---|---|---|---|---|
| ElevenLabs Sound Effects | ElevenLabs | Sound effects | from 2 | Generate short sound effects from a text prompt. |
Credits
The price follows Duration. Every second you ask for is charged, and a part of a second counts as a whole second, so 0.5 seconds costs the same as 1 second.
| Duration | Credits |
|---|---|
| 1 second | 2 |
| 5 seconds | 6 |
| 10 seconds, the default | 11 |
| 30 seconds, the longest the API accepts | 33 |
The node shows the exact price on its Run button before it runs.
Tips
- Describe the sound, not the scene. "Heavy rain on a tin roof" works better than "it was a stormy night".
- Ask for the length you need. You pay for each second of Duration, so set the length you need instead of trimming a longer sound afterwards.
- Keep Prompt Influence low. Values from 0.2 to 0.4 sound the most natural. Raise it only when the result drifts from your description.
- Loop continuous sounds. Loop works best for steady ambience, such as wind, rain or a crowd, and less well for single hits.
- Layer, then mix. Generate each part of a soundscape in its own node, then combine them with Mix Audio and set each level.
From the API
The MCP tool is text_to_audio. See the MCP tools.
Through the API and MCP, duration accepts 0.5 to 30 seconds. A call without a duration lets the model choose the length, and it is billed as 5 seconds: 6 credits.
Frequently asked questions
How long can a generated sound effect be?
From 0.5 to 22 seconds, in steps of 0.5 seconds. The default is 10 seconds. For a longer background, turn on Loop and repeat the clip.
How long can the description be?
Up to 450 characters. Describe one sound at a time, and build a complex soundscape from several nodes mixed together.
Does a longer sound cost more?
Yes. The price follows the Duration you set, by the second, and a part of a second counts as a whole second. A 1-second sound costs 2 credits, and the default 10 seconds costs 11 credits.
Can Text to Audio make speech or music?
It is made for sound effects and ambience, not speech. For speech, use Text to Speech. For music, use Suno Create Music or Generate Music.
What does Prompt Influence do?
It sets how literally the model follows your description, from 0 to 1. The default is 0.3. Lower values allow a freer interpretation; raise the value only when the result drifts too far from the description.
Related
Mix Audio
Video SFX
Merge Video & Audio
Text to Speech
ElevenLabs Sound Effects
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