Denoise and Voice Effect

Learn how to reduce background noise and change the sound of a clip with Denoise and Voice Effect in VN.

Updated August 21, 2026 · 3 min read

Before You Start

[Denoise] and [Voice Effect] are available only when the currently selected video clip contains sound. Select a clip with audio on the timeline, then swipe through the clip editing toolbar to find both tools.

Note If the selected clip does not contain sound, [Denoise] and [Voice Effect] will not appear in the clip editing toolbar.

Denoise

[Denoise] reduces unwanted background noise in a clip while keeping the sound you want to hear. Start with a lower strength and increase it only when more noise reduction is needed.

Select a video clip that contains audio, then tap [Denoise] in the clip editing toolbar.
Turn on [Denoise].
Drag the slider to adjust the noise-reduction strength. The setting ranges from [Low] to [Max]. VN processes the selected level after you adjust it.
When processing is complete, preview the clip and choose a level that reduces the unwanted noise without making the sound you want to keep unclear. Tap the checkmark to apply the result.

Voice Effect

[Voice Effect] changes how the sound in the selected clip is heard. Use it for character voices, stylized narration, telephone or megaphone sounds, echoes, and other creative audio treatments.

Select a video clip that contains audio, then tap [Voice Effect] in the clip editing toolbar.
Tap a preset to preview how it changes the clip’s sound. Select [None] when you do not want to apply a voice effect.
Swipe horizontally through the preset row to view all effects.

Voice Effect	Effect
[None]	Keeps the original voice.
[Child]	Adds a higher, youthful tone.
[Man]	Adds a lower, deeper tone.
[Woman]	Adds a brighter, higher tone.
[Robot]	Creates a synthetic robotic voice.
[Alien]	Adds an unusual sci-fi tone.
[Ghost]	Creates a hollow, eerie voice.
[Telephone]	Makes the voice sound like a phone call.
[Megaphone]	Creates a projected loudspeaker sound.
[Fan]	Adds a rapidly wavering sound.
[Optimus]	Creates a deep mechanical voice.
[Duck]	Adds a high, comical tone.
[Chipmunk]	Creates a very high-pitched voice.
[Cave]	Adds a spacious echo.
[Valley]	Creates a distant echo.
[Scratch]	Adds a rough, distorted texture.

Tap the checkmark to apply the selected effect.

Frequently Asked Questions

Common questions about reducing noise and applying voice effects in VN.

Why can’t I find Denoise or Voice Effect in the clip toolbar?

The currently selected clip must contain sound. Select a video clip with audio, then swipe through the clip editing toolbar to find [Denoise] and [Voice Effect]. These tools are not shown for a clip without sound.

What does Denoise do?

Denoise reduces unwanted background noise in the selected clip. Adjust the strength to balance noise reduction with the sound you want to keep.

Which Denoise strength should I use?

Start with a lower setting and preview the result. Increase the strength toward [Medium] or [Max] when more noise remains, but check that the sound you want to keep still sounds clear.

Why does Denoise need time to process?

VN analyzes the audio in the selected clip before applying the noise reduction. Processing time can vary with the clip duration and device performance.

Which Voice Effect presets are available?

The available presets shown in VN include [Child], [Man], [Woman], [Robot], [Alien], [Ghost], [Telephone], [Megaphone], [Fan], [Optimus], [Duck], [Chipmunk], [Cave], [Valley], and [Scratch]. Swipe through the preset row to view them.

Do Denoise and Voice Effect modify the original video on my device?

No. The changes are applied to the clip inside the VN project and do not modify the original video stored on your device.

Can I use Denoise and Voice Effect offline?

Yes. [Denoise] and [Voice Effect] run locally on your device and can be used without an internet connection. More about functions that can run while the device is offline can be found in Use VN Without an Internet Connection