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By Valmera Editorial · Published · Updated

AI Sound Effects Generator vs Real Recordings

Valmera does not generate sound effects. It uses AI to find, audition and place real recorded ones: you name a sound, and the agent searches Freesound’s library of recordings, compares the candidates by their actual waveforms and puts the best match on the exact frame of your video. We chose recordings over synthesis because generated one-shots tended to sound uncanny under real footage.

If the sound you need doesn’t exist as a recording, a generator is the right tool: make it there, upload the file, and Valmera places it. To add effects across a whole edit, see add sound effects to video automatically.

Real Sounds, Picked and Placed by AI

Name a sound and a moment, then review the preview. Creating an account and uploading are free. Editing requires a subscription.

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How to Find and Place a Real Sound Effect with AI

  1. 1
    Upload your video
    MP4, MOV, M4V, MKV or WebM, up to 14 GB and 3 hours. Valmera indexes the transcript, shot changes and frames, so “the moment the photo appears” is a moment the agent can find.
  2. 2
    Describe the sound by what makes it
    Name the physical sound and where it goes: “a camera shutter on the photo reveal,” “a short whoosh on the cut at 0:14.” Physical names find better recordings than mood words.
  3. 3
    Let the agent search and audition
    It searches real recordings, downloads the strongest candidates, compares their waveforms against the purpose and places the best match at −6 dB, or keeps the moment dry if every option weakens it. It tells you the sound’s source and license.
  4. 4
    Listen and adjust
    Watch the preview, then ask: “try a drier one,” “quieter,” “move it earlier.” Export a full-quality MP4 when it sounds right.
PROMPTS TO PASTE
Find a real camera shutter sound and put it on the frame where the photo appears.
Audition a few whooshes for the cut at 0:14 and use the one with the cleanest start.
Add a 20-second rain ambience under the opening shot. Public domain only.
I made a sci-fi UI beep in another tool and uploaded it as beep.wav. Put it on each button press.

Why Valmera Uses Real Recordings Instead of Generating Audio

Valmera used to generate one-shots. We removed the feature because generated hits tended to sound uncanny under real camera footage. A recorded effect carries real acoustics and a real transient, so it sits naturally beside sound your camera captured. The AI now works on the harder part of sound design: choosing the right recording and putting it on the right frame.

How the Sound Search Works

The agent searches Openverse, which fronts Freesound’s library of recorded effects. It queries by the sound’s physical name (“whoosh,” “camera shutter,” “keyboard click,” “pop,” “riser”) because recordings are labeled by what they are, not by mood. Results are capped at 15 seconds by default, since a one-shot lasts seconds; ambience searches can go up to 60 seconds. Every result carries its license, and the agent repeats the terms of any sound it uses:

License labelWhat it means for your video
Public domainNo conditions. Use it anywhere.
Credit requiredCredit the creator the way the license line asks, usually in your caption or description.
Non-commercial onlyFine for a personal video. Not for monetized or business content: ask for another sound, or upload one you have licensed.
No derivativesNever offered. Syncing a sound to picture counts as adapting it.

How the AI Auditions Candidates

A title says what a recording claims to be; the waveform shows how it behaves. Before choosing, Valmera downloads the strongest candidates and measures each one: attack, where the peak sits, the tail, crest (how sharp the transient is), spectral balance, bass energy, and whether the file holds one clean event or several. It scores those measurements against the purpose of the moment:

You ask forThe audition favors
Click, tap, shutter, popA short sound of about half a second with a fast attack and a sharp transient
Impact, hit, boomA fast attack, roughly a second long, with strong bass energy
Riser, swellA build of a few seconds that peaks late, so it resolves on the moment
Whoosh, swishA sweep of about a second with its peak mid-sound and its energy in the mids and highs
Any soundA clean start with no dead air at the front, and one event rather than several

On the one-call path, a listening pass over the top three candidates can also decide that the moment is stronger with no sound at all.

When a True AI Generator Is the Better Tool

  • The sound doesn’t exist as a recording: a creature, a spell, an impossible machine.
  • You want a designed sci-fi or interface texture built to a brief.
  • You need many unique variations of one sound, for example for a game.
  • You need a sound at an exact length or pitch to fit a beat.

Generate it there, upload the file to Valmera (MP3, WAV, M4A, AAC or OGG, up to 50 MB) and ask for it on the moment. The agent places and levels it like any other effect.

Limits of a Recording-Based Approach

Valmera doesn’t synthesize or process sounds: there is no text-to-audio, and no per-effect EQ, reverb or pitch. It finds, auditions and places recordings and your uploads. License labels come from the source; Valmera relays them but doesn’t grant rights, so check the terms before commercial use. It doesn’t generate music either, and there is no audio denoise.

From One Sound to a Full Edit

To add effects across a whole video (whooshes on scene changes, pops on titles, clicks on a product demo), see add sound effects to video automatically. For music, Valmera works with the track you bring and ducks it under speech: add music to video. Levels and defaults for every audio layer are in the audio and music docs.

Using Claude, ChatGPT or Cursor? The same search_sfx, audition_sfx_candidates, fetch_sfx and add_sfx tools are available through Valmera’s MCP server.

Creating an account and uploading are free. Editing requires a subscription — see plans.

Frequently Asked Questions

No. Valmera does not synthesize audio. Its AI finds real recorded effects, compares candidates by their waveforms and places the best one in your video. Valmera removed generation because generated one-shots tended to sound uncanny under real footage.
From Freesound's library of recorded effects, searched through Openverse, or from files you upload. You can also use the sound from a video clip you send.
Each sound carries its own license, and the agent tells you the terms of every sound it places. Public-domain sounds have no conditions, credit-required sounds need the creator credited, and non-commercial sounds are not for monetized or business content. Sounds that forbid adaptation are excluded from results.
It measures them. The agent downloads the strongest candidates and compares attack, peak position, tail, crest, spectral balance, bass and event count against the purpose of the moment: a click should be short and sharp, a riser should peak late, an impact should hit fast with weight underneath.
When the sound doesn't exist as a recording: a creature, a spell, a designed sci-fi texture, or many unique variations of one sound. Generate it in a dedicated tool, upload the file to Valmera, and the agent places and levels it on the moment you name.
Yes. Upload MP3, WAV, M4A, AAC or OGG files up to 50 MB and say where each one goes. Creating an account and uploading are free. Editing requires a subscription.
No. There is no AI music generation and no mood or genre music library. Upload your own track or name a specific song for the agent to find; licensing the song is up to you. The agent then fits it to the edit and ducks it smoothly under speech.

Made with Valmera: real exports

Put a Real Sound on the Moment

Name the sound, review the preview, export a full-quality MP4. Creating an account and uploading are free. Editing requires a subscription.

Create an account →
See pricing →

Related Articles

Add Sound Effects to Video Automatically
Whooshes, impacts, clicks and pops placed across a whole edit.
Add Music to Video
Your track, fitted to the edit and ducked smoothly under speech.
Docs: Audio & Music
Every audio layer, its default level and how to change it.
Valmera MCP Server
Search, audition and place sounds from Claude, ChatGPT or Cursor.