
How to Create AI Characters with HeyGen Avatar IV and ElevenLabs Voice Changer
Create studio-quality AI characters by animating images with HeyGen's Avatar IV and enhancing voiceovers with ElevenLabs Voice Changer.
Learn how ElevenLabs created SB1, an infinite soundboard powered by their text-to-sound effects AI audio model, allowing users to generate any sound on demand.
Imagine a soundboard that can generate unlimited sounds on demand. That’s exactly what we built at ElevenLabs — meet SB1, our infinite soundboard. On the surface, it looks like a typical grid of pads you trigger with clicks or keyboard shortcuts. Under the hood, it’s powered by our text-to-sound effects AI audio model.
To use it you simply describe any sound you can think of, and SB1 will generate it. There are also some predefined default sounds, but even they can be replaced.
Von der Idee zum Prototypsoft ambient forest sounds” or “dramatic audience gasp,” and get a ready-to-use sound effect?
Wir begannen mit einer einfachen Frage: Was wäre, wenn Sie eine Beschreibung eingeben könnten, wie „
Before jumping in to the code we turned to Lovable to create a basic prototype version of what would become SB1. Not connected to the API yet, it gave us a chance to experiment with design choices and button placements, before our brilliant team created the final UI and code.
Bevor wir in den Code eintauchten, wandten wir uns an
1 | POST https://api.elevenlabs.io/v1/sound-generation |
You send a JSON payload with your prompt, the number of variations you want (we default to four), and your API key in the Authorization header.
Sie senden eine JSON-Nutzlast mit Ihrem Prompt, der Anzahl der gewünschten Variationen (standardmäßig vier) und Ihrem API-Schlüssel im Authorization-Header.
/v1/sound-effects/generate
Authorization: Bearer YOUR_API_KEY
Content-Type: application/json
prompt
(string): description of the soundn
(integer): number of variations (1–10)format
(string, optional): wav or mp3 (defaults to wav)A sample request looks like this:
1 | { |
2 | "prompt": "rain hitting the roof of a tent", |
3 | "n": 4, |
4 | "format": "wav" |
5 | } |
6 |
And you’ll receive back an array of four URLs. We designed the API so that it scales to any use case — from ad hoc soundboard creation to bulk generation for game assets.
Erstellung der SB1-Oberfläche
When you click an empty pad in custom mode, a prompt dialog appears. You type your description, hit Generate, and the API returns four options. You audition them inline, pick your favorite, and the pad updates immediately. Keyboard bindings let you trigger pads with key presses, so you can play rhythms or sound cues live.
Wenn Sie in den benutzerdefinierten Modus auf ein leeres Pad klicken, erscheint ein Eingabedialog. Sie geben Ihre Beschreibung ein, drücken
We generated each by sending prompts like “light rain dripping on leaves” and “soft waves rolling onto a shore.” Then we set those pads to loop, creating a backdrop for focus or meditation.
You don’t need audio samples from a drum library. Just describe “super bassy 808 kick” or “tight snare snap,” and the API gives you four versions to audition. We mapped them to the A, S, and D keys for a live performance demo.
Sie benötigen keine Audiosamples aus einer Drum-Bibliothek. Beschreiben Sie einfach „super bassiger 808 Kick“ oder „knackiger Snare-Schlag“, und die API gibt Ihnen vier Versionen zur Auswahl. Wir haben sie den Tasten A, S und D für eine Live-Performance-Demo zugeordnet.
Benutzerdefinierte VoreinstellungenShare to copy a link or post directly to social media. Anyone with the link loads your SB1 configuration and can play your curated sounds.
To get started yourself, Niedrige Latenz. You’ll find code samples in JavaScript, Python, and cURL that show how to integrate the SFX API into your projects.
Was kommt als Nächstes?
SB1 ist nur eine Demo dessen, was unser Soundeffekt-Modell leisten kann. Wir erforschen Plugins für OBS und digitale Audio-Workstations, damit Sie neue Sounds erzeugen können, ohne Ihre Streaming- oder Produktionssoftware zu verlassen. Wir optimieren auch das Modell, um die Leistung bei musikbezogenen Prompts zu verbessern — denken Sie an exotische Percussion oder Synthesizer-Texturen.
Give it a try for free today — no MP3 library required.
Create studio-quality AI characters by animating images with HeyGen's Avatar IV and enhancing voiceovers with ElevenLabs Voice Changer.
Impact Voice Lab connects people who’ve lost their voice with volunteers who clean and prepare audio recordings to help restore it
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