How to Remove Background Noise from Audio

Background noise can ruin an otherwise perfect audio recording-whether it's a podcast, Zoom meeting, voiceover, or video. If you're searching for how to remove background noise from audio, chances are you want a clean and professional sound without the hiss, hum, or chatter.

In this guide, we'll show you 5 powerful methods to eliminate background noise. Whether you need a quick online tool, a free desktop app, or an all-in-one solution like HitPaw Univd, we've got you covered.

Part 1. Best Online Tools to Remove Background Noise

1. Krisp - AI Noise Cancellation for Calls

Best for: Remote meetings, live streaming, voice chats

Works with: Zoom, Teams, Discord, and other conferencing apps

Krisp is an AI-powered real-time noise suppression application that integrates directly with communication platforms. Using deep neural networks trained on over 100,000 noise samples, it provides bidirectional noise cancellation for both incoming and outgoing audio streams. The solution operates at the system level, making it compatible with virtually any conferencing software without requiring additional configuration.

• 1.Go to Krisp's website and download the app.
• 2.Install and launch Krisp, then select your microphone & speaker in settings.
• 3.Enable Noise Cancellation for both input (your mic) and output (others' voices).
• 4.Join a call-Krisp works in real time to block background noise.

2. Adobe Podcast Enhance - Free AI Audio Cleaner

Best for: Podcasters, interview recordings, voiceovers

Works with: MP3, WAV, and other common formats

Adobe's cloud-based audio enhancement tool leverages the company's Sensei AI platform to automatically improve speech clarity. The web application performs spectral analysis to separate voice signals from background noise while maintaining natural speech characteristics. Processing occurs server-side, requiring no local computational resources from the user's device.

• 1.Visit Adobe Podcast Enhance.
• 2.Upload your audio file (up to 1 hour for free).
• 3.Wait for AI processing (takes a few minutes).
• 4.Download the enhanced file with reduced noise.

Part 2. Free & Open-Source Audio Noise Removal Tools

1. Audacity (With Noise Reduction Plugin)

Best for: Musicians, podcast editors, free audio cleanup

This open-source digital audio workstation provides multi-track editing capabilities with built-in noise reduction algorithms. The software implements spectral subtraction techniques that allow users to sample noise profiles and apply adaptive filtering across the frequency spectrum. Its modular architecture supports VST plugins for expanded functionality.

• 1.Download Audacity (free & open-source).
• 2.Record or import your audio file.
• 3.Select a noise sample (a silent part with background hiss).
• 4.Go to Effect > Noise Reduction > Get Noise Profile.
• 5.Select the entire track, then apply Noise Reduction (adjust sliders as needed).
• 6.Export the cleaned audio (File > Export).

2. RNNoise (For Developers & Advanced Users)

Best for: Programmers who want to integrate noise removal into apps

A lightweight open-source noise suppression library that combines traditional signal processing with machine learning. The algorithm uses a recurrent neural network to model and suppress noise in real-time while optimizing for low-latency performance. Originally developed for VoIP applications, it's particularly effective for voice signal processing.

• 1.Download the RNNoise project from GitHub.
• 2.Compile the code (requires basic coding knowledge).
• 3.Run the command-line tool to process audio files:
  bash
  Copy
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  ./rnnoise_demo input.wav output.wav
• 4.The AI model will reduce noise automatically.

Part 3. Professional Noise Removal Software

Best For: Content creators, podcasters, educators, and professionals needing a fast, accurate, and format-flexible tool.

HitPaw Univd is an all-in-one AI multimedia toolkit. Its Noise Remover feature uses advanced algorithms to detect and eliminate background noise from both audio and video. It supports over 1,000 formats, making it ideal for creators working with various file types.

• Step 1.Download HitPaw Univd (Windows/Mac) and install it toc omputer.

  
  

• Step 2.Open the program, and find Noise Remover feature from the main interface.

  

• Step 3.Import the audio file to the program.

  

• Step 4.Wait for the program to automatically remove the background noise.

  

• Step 5.Preview the result, then export the cleaned file in any format (MP3, WAV, AAC, etc.).

  

Part 4. Which Tool Should You Choose?

The Bottom Line

Removing background noise from audio doesn't have to be complicated. For quick fixes, try Adobe Podcast Enhance or Krisp. If you need free software, Audacity is a great choice.

But for the best balance of ease and power, HitPaw Univd stands out with broad formats support, AI-powered operation, and advanced features.