Audio nodes

In this article

• Available audio nodes
• Voiceover
• Voiceover models
• Music Generator
• Music Generator models
• Sound Effects
• Video Audio Mix
• Typical audio workflow
• Prompting tips
• Tips and best practices

Available audio nodes

All audio nodes are new additions to Spaces.

Voiceover

The Voiceover node converts text into natural-sounding speech. Choose from hundreds of AI voices across multiple providers to narrate scripts, create dialogue, or produce voice content.

How to use the Voiceover node

Voice parameters

Input and output

The Voiceover node accepts a Text input — your script — and outputs Audio — the generated voiceover. You can type directly on the card or connect a Text node for dynamic scripts.

Use cases

• Video narration — Write a script, generate a voiceover, then combine it with your video using Video Audio Mix.
• Podcast creation — Generate voiceovers for individual segments and combine them into a full episode.
• Character dialogue — Use multiple Voiceover nodes with different voices, then mix them together for conversation scenes.
• Lip-sync video — Generate a voiceover, then connect the audio output to a lip-sync video model so your character speaks in sync.

Voiceover models

Three AI models are available for voice generation. Each has different strengths — pick the one that matches your project.

ElevenLabs v2 is the fastest option. Use it when you need to generate many voiceovers quickly or iterate on scripts during production. It supports Speed, Stability, and Similarity Boost parameters.

ElevenLabs v3 delivers more natural prosody and intonation than v2 — pacing, emphasis, and emotional tone feel closer to a human read. Use it for final output when quality matters most. Same parameters as v2.

Gemini 2.5 Pro excels at multi-language content and conversational delivery. It supports Temperature, System Instruction, and Language selection. Multi-speaker configuration is possible for dialogue-style output.

Quick guide: which model to choose

Music Generator

The Music Generator node creates original music from text descriptions. Describe the mood, genre, tempo, and instruments — the AI composes a unique track.

How to use the Music Generator node

Input and output

The Music Generator node accepts a Text input — your music description — and outputs Audio — the generated track.

Use cases

• Video soundtrack — Describe a mood and generate a background track, then combine it with your video using Video Audio Mix.
• Podcast intro music — Generate a short, branded intro with ElevenLabs Music.
• Background music — Create lo-fi, ambient, or genre-specific loops for content.
• Compare styles — Write several genre descriptions, generate them all, and pick the best fit for your project.

Music Generator models

Two AI models are available for music generation, each optimized for different use cases.

Google Lyria excels at longer compositions with natural musical structure. It handles a wide range of genres and can produce pieces with evolving arrangement — intros, builds, and transitions.

ElevenLabs Music is optimized for short, concentrated pieces. The output is clean and well-defined — ideal for branding elements, transitions, and loop-ready clips.

Quick guide: which model to choose

Sound Effects

The Sound Effects node generates AI-powered audio from text descriptions. Describe any sound — from rain on a tin roof to a spaceship engine humming — and the AI creates it. Use it to add atmosphere and foley to video projects.

How to use the Sound Effects node

Input and output

The Sound Effects node accepts a Text input — your sound description — and outputs Audio — the generated effect.

Use cases

• Video foley — Describe scene sounds, generate them, and layer them onto your video with Video Audio Mix.
• Ambient loops — Create continuous background audio like coffee shop ambiance or rain, with Loop enabled.
• Podcast intros — Create unique audio branding with dramatic stings or transition sounds.
• Game audio — Generate UI sounds, environmental ambience, or action effects for game prototyping.

Video Audio Mix

The Video Audio Mix node combines multiple audio tracks with a video. Use it as the final step in your audio workflow — connect your voiceover, music, and sound effects, then mix them with your generated or uploaded video.

Typical audio workflow

A common pattern for producing narrated video with a soundtrack in Spaces:

You can connect as many audio sources as you need before combining them with the final video.

Prompting tips

Good prompts lead to better audio. Here is what works for each node.

Voiceover

Your voiceover prompt is the script itself — write it exactly as you want it spoken. Keep sentences natural and conversational. If you need specific pacing or emphasis, choose the right model and adjust the voice parameters rather than trying to encode delivery instructions in the text.

Music Generator

Include genre, mood, tempo, and instruments for the most control.

Cinematic orchestral piece, dramatic, building tension, strings and brass, 120 BPM

Acoustic folk guitar, warm and nostalgic, fingerpicking style, 90 BPM

For ElevenLabs Music — shorter pieces — keep descriptions focused on a single mood or purpose.

Upbeat electronic jingle, happy, synth lead

Dark ambient drone, eerie, low frequency hum

Sound Effects

Be descriptive and specific. The more detail you include, the closer the result will match what you hear in your head.

Heavy rain on a tin roof with distant thunder — works better than just rain

Busy coffee shop ambiance with quiet conversation and espresso machine — works better than cafe sounds

Tips and best practices

Preview voices before committing. The voice library includes sample playback for every voice — listen before you generate.

Lower stability for expression. If your voiceover sounds too flat or robotic, try reducing the Stability parameter. This adds more variation and emotional range to the delivery.

Generate multiple variations. Audio generation — especially music and sound effects — is highly variable. Generate several versions of the same prompt and pick the best one.

Use Loop for ambient sounds. Enable the Loop toggle on the Sound Effects node when you need continuous background audio like rain, traffic, or office ambiance.

Draft with v2, finish with v3. Use ElevenLabs v2 for fast iteration on scripts, then switch to v3 for the final voiceover when quality matters.

Be specific about tempo in music prompts. Adding a BPM value like 120 BPM gives the AI a concrete target and produces more consistent results.

Use multiple Voiceover nodes for dialogue. Add several Voiceover nodes with different voices to create conversation scenes, then combine them with Video Audio Mix.

Combine Sound Effects for rich soundscapes. Layer multiple Sound Effects nodes — for example, rain plus distant traffic plus indoor echo — and mix them together for depth.