How to remove background noise with filters on your PC: a practical guide and tools

Achieving clean audio makes all the difference between engaging content and content that is abandoned after a few seconds. Whether you record videos, do live streams with a properly configured microphone Whether you're participating in online meetings or participating in online meetings, controlling background noise on your PC is key to making your voice stand out from the noise of fans, traffic, or typing.

Outside of a professional studio it is normal for it to sneak in. a constant buzzing or sudden clicking noiseThe good news is that there are filters and tools capable of attenuating or eliminating it with very solid results: from the classic noise gate in editors like VSDC to reduction functions in Filmora, Audacity, Movavi, services with IA such as Krisp or solutions integrated into Zoom and NVIDIA.

What do we mean by background noise and why it is convenient to filter it?

When we talk about background noise we refer to unwanted sounds present during recordingThey tend to be constant and low-frequency (fans, air conditioning, PC hum), or sharp peaks like clicks and pops. Both types obscure your voice and make it difficult to hear.

In general we distinguish two categories: continuous soft noises y occasional loud noisesThe former are well combated with a noise gate; the latter with filters like median to dampen peaks without affecting the entire clip. Depending on the environment, you may need to combine approaches.

We must assume that there is no magic button that erases everything at once. There is always a fine tuning point: Test parameters, listen, and tweak again until the voice sounds natural and the noise is pleasantly reduced.

Even with good filtering, you'll notice that the voice may change slightly, especially when you alter the threshold and compression. It is normal for the timbre to change a little.If the result feels unnatural, try softening the parameters, adding background music to mask the residue, or replacing the audio with a separately recorded narration.

Noise Gate in VSDC: How It Works and How to Adjust It

The noise gate behaves like a "door" that lets sounds pass above a level and attenuates those below it. It's ideal for the constant whirring of fans or air conditioners, as they tend to be lower than the volume of your voice.

To use it in VSDC: import your clip, right click on the audio and go to Audio Effects → Filters → Gate. If you don't see the Properties window, select it from the timeline to access the gate controls.

Key parameters you should know and adjust based on your case: Threshold, attack, release, reduction, ratio, knee, and output gainWith them, you'll control when the door opens or closes, how quickly it does so, and how it reshapes the processed signal.

• Threshold: Level at which the door opens. If you set it high, only loud sounds (your voice) will pass through; if you set it low, more ambient noise will leak in. Continuous noise usually falls below the voice threshold.
• Attack: speed at which the gate opens when the threshold is crossed. Lower values ​​respond more quickly (useful for percussion); higher values ​​soften the beginning of phrases.
• Release (also called emission): determines how quickly it closes the door after stepping off the threshold. Too short can cut off natural tails; anything longer preserves smooth decays, for example on electric guitar.
• Reduction: Amount of attenuation applied to the noise when the door is closed. Use sparingly to avoid artifacts.
• Proportion: Regulates the amount of compression applied to material below the threshold. For example, 4:1 means that 4 dB is reduced to 1 dB upon activation.
• Knee: Defines whether the transition is hard or soft when the signal crosses the threshold. A soft knee provides a more gradual and natural activation.
• Output gain: compensates the signal after processing to recover perceived level.

An approach that often works well is the one recommended by specialist profiles such as LANDR: starts with minimum parameters except the threshold, and gradually regain naturalness.

1. Raise the threshold to the maximum and leave the rest to the minimum.
2. Lower the threshold until you start to hear the lead voice clearly.
3. Increase attack, release and knee little by little, listening to every change.
4. Adjust reduction, ratio and gain until you achieve the desired balance.

If in addition to a continuous buzzing you have isolated clicks or pops, combines the gate with a median filter to smooth out those peaks without aggressively affecting the rest of the audio.

Four popular editors for cleaning audio on PC

Beyond VSDC, there are several programs with noise reduction features that They greatly simplify the processBelow you'll see what they offer and how to use them in the basics.

Wondershare filmora

Filmora is a very accessible video editor with built-in audio tools. It serves the same purpose for starters for advanced profiles, and its noise cancellation feature is quick to activate.

• Install Filmora, open the program and your material matters from File → Import Media.
• Drag the clip to the timeline, right-click on it and choose Adjust audio.
• Activate the option to remove background noise and raise the level of elimination to a loud setting if the noise is noticeable.
• Play a sample to see if your voice is clearer without sounding artificial.
• Export in the format you prefer or upload directly to YouTube or Vimeo from Filmora itself.

Bonus tip: In addition to the noise filter, support the result with the equalizer to restore brightness or body to your voice. The audio mixer will allow you to balance levels and save your processed track as MP3 if you need it.

Audacity

Audacity is an application of open source for recording and editing audio It supports WAV, MP3, AIFF, or OGG, mixes tracks, and applies effects. Its noise reduction tool works by profile: we teach it what noise is, and then it cleans up the rest.

• Select a “quiet” area where only ambient noise can be heard.
• Go to Effects → Noise reduction and press Get Noise Profile.
• Now select all the audio you want to clean and go back to Noise reduction.
• Adjust the parameters if necessary and accept the application. Listen before and after to assess any improvements.

A good habit is minimize noise before recording and finish off with noise reduction at the end, and also Check if your laptop has a built-in microphoneThis way you avoid forcing the effect and reduce unwanted artifacts.

If what you hear doesn't convince you, you can always use Edit → Undo and try a less aggressive setting. When you're done, export from File → Export Audio and save it in the format you need.

This flow is very effective because difference between useful signal and noiseStill, remember that the better the original take, the less work the filters will have to do and the better the final result will sound.

VSD extension

VSDC, in addition to its complete video editing, includes advanced audio tools Like the aforementioned noise gate, it's a great option if you're editing video and want to improve the sound without leaving the same environment.

• Open VSDC, go to the Editor tab and press Run Sprite or Audio Wizard to import your file.
• Go to Audio Effects → Filters → Gate and adjust the threshold in the right pane.
• Refine the attack and release values ​​to control how the gate responds and reduces background noise without cutting the voice.

Movavi Video Editor

Movavi is an editor designed for quick assemblies and personal projects, with a very straightforward noise suppression box to clean up audio without complications.

• Open the project, place the clip on the timeline and select the audio.
• Go to the settings panel, choose audio editing and activate the option eliminate noise.
• Move the suppression control until you find the point that better balance clarity and naturalness.

Keep in mind that each recording brings its own noise level. Adjusts clip-based suppression and check the result with reference speakers or headphones so as not to over-clean.

Audacity Step by Step: Import, Sharpen, and Clean Up

If you're starting from scratch, open Audacity on your PC. The icon is recognizable by its blue headphones with a waveform. Import the file from File → Import → Audio and locate your recording.

To select a fragment, drag the mouse over the waveform. If you want to choose everything, use Ctrl on Windows or Command in Mac together with A. It is advisable to work on the entire track to maintain uniformity.

Go to Effect → Noise Reduction and press Get noise profile with a constant noise level. Then select all the audio and apply Noise Reduction again with those parameters.

If what you hear doesn't convince you, you can always use Edit → Undo and try a less aggressive setting. When you're done, export from File → Export Audio and save it in the format you need.

This flow is very effective because difference between useful signal and noiseStill, remember that the better the original take, the less work the filters will have to do and the better the final result will sound.

Call and live solutions: AI and real-time cancellation

When the goal is to be heard better on video calls or live broadcasts, you have options that perform live and also measures to avoid interruptions without going through a subsequent edition of the file.

krisp

Krisp uses AI models to let only the voices pass and suppress noises like typing, fans, or even outside conversations. Create virtual microphone and speaker devices of your choice in apps such as Zoom, Meet or Teams.

In its free plan it offers 60 minutes a day easy to use. It also includes useful extras such as transcripts and meeting summaries, which can save time after a long call.

NVIDIA RTX Voice and NVIDIA Broadcast

If your computer has an NVIDIA RTX GPU, noise cancellation takes advantage of AI acceleration on the card itself. With NVIDIA broadcast (or with RTX Voice on compatible GeForce GTX cards) you choose the microphone and speakers and the filter is applied in real time.

It is compatible with Discord, OBS, Streamlabs, Twitch, Zoom, Slack, Teams, Skype or even Chrome. It is very streamer-oriented. and creators, but it is equally useful in work meetings with a noisy background.

Noise Blocker

Noise Blocker, available for Windows, works by asking you to record the sounds you want to block (e.g. typing or fan noise). Then it filters out matching patterns into the microphone.

It is especially effective with noises constant and repetitiveIt's not designed for works with varying intensity or multiple overlapping voices. It offers one hour of free use per day for apps like Discord.

Zoom and its integrated suppression

Zoom incorporates native noise suppression with different levels of intensitySimply go into your audio settings and choose the profile that best suits your connection environment.

Its advantage is that you don't need install anything elseIf your company standardizes on Zoom, enabling this feature can save you a meeting from a lively location.

A one-click online alternative: VEED

If you prefer not to install programs, VEED allows clear background noise with one click from your browser. Upload your file, go to settings, and activate the audio cleanup option.

It works with both audio (MP3, AAC, WMA and more) and video in common formats such as MP4, AVI, WMV, or MOV. It's handy for podcasts, music, or quick recordings where you want to sharpen things up without the hassle.

The best part is that you don't need expensive microphones or retakes. For urgent situations, automation gets you out of trouble and leaves your track looking pretty presentable in seconds.

Tips for adjusting without losing naturalness

Start by identifying if your problem is a constant humming or sporadic spikesFor hum, a noise gate; for peaks, a median or other click filter. If you have both, combine tools with gentle adjustments.

In noise gates, work the threshold with patience. Increase the pitch until the noise disappears, then decrease it until your voice is no longer choppy. Then, shape the attack and release so the phrases breathe and don't seem clipped.

Avoid extreme attenuations: excessive reduction can leave bubbling or metallized artifactsA little residual noise is preferable to overly processed audio that sounds artificial.

If you lose body or shine when cleaning, compensate with light equalization and adjust the output gain carefully to maintain the same apparent level as before processing.

Don't forget that some online platforms and services use tracking technologies and cookies to improve or personalize their performance. Review their privacy policies and adjust your preferences when using web-based tools.

With these techniques and tools you will be able to leave your audio clear and pleasant In most cases: well-configured gates for continuous noises, profile-based reduction in Audacity, built-in suppression in popular editors, and live cancellation for calls and live performances. If the environment is extreme, combine approaches and try soft background music or a recorded voiceover afterwards to complete the professional look.