Creative ToolsAudio and text tools
Create sound effects with Sound Effects Generator
Sound Effects Generator is the Nodespell Creative Tool for making sound effects and ambience. You describe the sound—footsteps on gravel, a door creaking, a busy street—and the selected model returns an audio clip. One model can also listen to a video and generate sound that fits the picture.
When to use Sound Effects Generator
Section titled “When to use Sound Effects Generator”| You want… | Use |
|---|---|
| A sound effect, foley or ambience | Sound Effects Generator |
| Sound that matches the action in a clip | Sound Effects Generator with MMAudio V2 and a video |
| Music | Music Generator |
| Speech | Voice Generator |
| Synchronized audio while generating a new video | A video model with a Generate Audio setting, in Text to Video or Image to Video |
Generate a sound effect
Section titled “Generate a sound effect”- Switch the workspace to Create. Select Audio Generator in the tool rail, open the tool switcher at the top of the form, and choose Sound Effects Generator. It is also under All tools.
- Check the model. The default is ElevenLabs Sound Effects V2.
- Describe the sound in the text field. Be concrete about the source, the surface and the space, for example “heavy boots on wet gravel, outdoors, light rain”.
- Set duration, looping or prompt influence if needed.
- Set Generations from 1 to 4 to get variations to choose from.
- Select Generate.
Sound Effects Generator controls
Section titled “Sound Effects Generator controls”| Control | What it does | Options and defaults |
|---|---|---|
| Tool switcher (title) | Moves to another audio Creative Tool | Audio Generator, Voice Generator, Music Generator, Sound Effects Generator |
| Model picker | Chooses a sound-effect model | Default: ElevenLabs Sound Effects V2 |
| Previous model / Next model | Switches between the two models | — |
| More settings | Less-used model settings | Collapsed |
| Generations | Number of runs submitted together | 1 to 4, default 1 |
| Generate | Adds or updates the model node and submits the runs | Shows the credit estimate |
Models for Sound Effects Generator
Section titled “Models for Sound Effects Generator”Sound Effects Generator has no featured list, so the picker opens on All models. It lists two models.
ElevenLabs Sound Effects V2 (default)
Section titled “ElevenLabs Sound Effects V2 (default)”| Setting | What it does | Default |
|---|---|---|
| Text | Description of the sound | Empty |
| Duration Seconds | 0.5 to 22 seconds; -1 lets the model choose from the prompt | -1 |
| Loop | Makes a sound that loops smoothly | Off |
| Prompt Influence | 0 to 1; higher follows the prompt more closely with less variation | 0.3 |
| Output Format | MP3, PCM or Opus at several sample rates and bitrates | MP3 44.1kHz 128kbps |
MMAudio V2
Section titled “MMAudio V2”MMAudio V2 generates audio from an optional video, an optional image, or a text prompt. Add a video to get sound timed to the action on screen. Its settings include Duration (default 8 seconds), Negative Prompt (default “music”, to keep music out), Num Steps, CFG Strength and Seed.
See Choose a model for switching.
Add sound to a video clip
Section titled “Add sound to a video clip”- Open Sound Effects Generator and choose MMAudio V2.
- Add the clip to the video field. Select it to open Choose assets.
- Optionally describe the sound you want, and set Duration to match the clip.
- Select Generate, then place the audio under the clip in the Timeline.
Where does the sound go?
Section titled “Where does the sound go?”Generate places the model node in the current graph level and runs it. The sound appears in Results in the Create form and in the node’s history; see Takes. Generated audio also appears under Generated and Audio in the Asset Manager.
Common problems
Section titled “Common problems”- The sound is the wrong length. On ElevenLabs Sound Effects V2, set Duration Seconds instead of -1. Its maximum is 22 seconds.
- Music creeps into the effect. Keep Negative Prompt set to “music” on MMAudio V2, or remove musical words from the description.
- A loop clicks at the join. Turn on Loop on ElevenLabs Sound Effects V2 so the model builds a smooth loop.
Frequently asked questions
Section titled “Frequently asked questions”What is the default Sound Effects Generator model?
Section titled “What is the default Sound Effects Generator model?”The default is ElevenLabs Sound Effects V2. It makes effects from a text description, from 0.5 to 22 seconds long, with an optional smooth loop.
Can Sound Effects Generator create sound from a video?
Section titled “Can Sound Effects Generator create sound from a video?”Yes. Choose MMAudio V2 and add a video; it generates audio that follows the picture.
Can I make a longer ambience bed?
Section titled “Can I make a longer ambience bed?”ElevenLabs Sound Effects V2 stops at 22 seconds. Turn on Loop and repeat the clip in the Timeline to cover a longer shot.
Is Sound Effects Generator the same as Audio Generator?
Section titled “Is Sound Effects Generator the same as Audio Generator?”No. Audio Generator lists speech, music and sound-effect models together. Sound Effects Generator lists only sound-effect models.
Related
Section titled “Related”- Add a soundtrack to a clip — music and effects under video
- Audio Generator — all audio models together
- Music Generator — music beds and songs
- Timeline — place, trim and layer sounds
- Choose a model — the model picker