Mirelo SFX

Mirelo SFX

Mirelo
StepAudio 3

StepAudio 3

StepFun
+
+

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About

Mirelo SFX is an AI-powered video-to-sound effects solution that brings videos to life with synchronized, realistic audio. Users can generate sound effects, Foley, and ambience that match their footage while preserving dialogue, removing unwanted audio, and keeping sound consistent across cuts. Instead of searching for, trimming, and syncing individual effects, users can upload a video and automatically generate footsteps, impacts, environmental sounds, and other audio elements that land exactly where they should. The model reads visible action, timing, and environment to synchronize sounds with on-screen events. Its speech preservation technology separates dialogue from the original clip and retains it while generating new effects and ambience, allowing users to remove unwanted background music without losing speech. For multi-clip projects, it maintains consistent audio across transitions, making stitched edits sound like one continuous scene.

About

StepAudio 3 is StepFun’s next-generation audio model family, built to understand, generate, and interact through voice, sound, and music. The lineup includes StepAudio 3 Realtime for natural full-duplex conversation, StepAudio 3 ASR for speech recognition, StepAudio 3 TTS for speech synthesis, StepAudio 3 Gen for general-purpose audio generation, and StepAudio 3 Music for long-form music creation. Realtime is designed around a continuous listen-converse-think-act loop, understanding not only words but also hesitation, laughter, emotion, pauses, backchannels, and interruptions. It can think while speaking, reason through harder questions without breaking conversational flow, and use tools to complete tasks once it understands the user’s intent. StepAudio 3 Gen unifies zero-shot TTS, voice design, vocal generation, sound effects, music, and mixed audio generation within one framework, while StepAudio 3 Music supports text-controlled songs, instrumentals, vocal arrangement, and more.

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

Video creators, filmmakers, sound designers, editors, and developers in need of a tool to generate synchronized sound effects, preserve dialogue, and create consistent audio for video projects

Audience

Developers, AI teams, and creators needing to build real-time voice agents, speech applications, transcription systems, and generative audio or music experiences

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

API

Offers API Supported

API

Offers API Not Supported

Screenshots and Videos

Screenshots and Videos

Pricing

No information available.
Free Version Not Supported
Free Trial Supported

Pricing

No information available.
Free Version Not Supported
Free Trial Not Supported

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Company Information

Mirelo
Founded: 2023
Germany
mirelo.ai/sfx

Company Information

StepFun
United States
static.stepfun.com/blog/stepaudio3/

Alternatives

Mirelo AI

Mirelo AI

Mirelo

Alternatives

Pika SFX

Pika SFX

Pika
Seed-Music

Seed-Music

ByteDance

Categories

Categories

AI Models Supported

Integrations

Adobe Premiere Pro Supported
DaVinci Resolve Supported
JavaScript Supported
Mirelo AI Supported
Python Supported
Roblox Supported

Integrations

Adobe Premiere Pro Not Supported
DaVinci Resolve Not Supported
JavaScript Not Supported
Mirelo AI Not Supported
Python Not Supported
Roblox Not Supported
Claim Mirelo SFX and update features and information
Claim Mirelo SFX and update features and information
Claim StepAudio 3 and update features and information
Claim StepAudio 3 and update features and information