Noise Gate / Denoise
Free online noise gate and audio denoise tool. Remove background noise, hum, hiss from recordings. Apply noise gate to cut unwanted sounds. Supports MP3, WAV, OGG, AAC. No software required.
About Noise Gate & Denoise
This online noise gate and denoise tool helps you remove unwanted background noise from your audio recordings. It combines FFT-based noise reduction to remove hiss, hum, and constant noise, with a noise gate that cuts off sounds below a threshold. Perfect for cleaning up voice recordings, podcasts, interviews, and amateur recordings.
What audio formats are supported?
Input: MP3, WAV, OGG, AAC, M4A, and other common formats. Output: You can choose to keep the same format as input or convert to MP3, WAV, OGG, or AAC.
What is noise reduction?
Noise reduction removes constant background noise like hiss, hum, fan noise, or room tone. It analyzes the frequency spectrum and removes noise patterns while preserving the main audio content. This tool uses FFT-based denoising.
What is a noise gate?
A noise gate is an audio processor that cuts off (mutes) sounds below a certain threshold. When the audio level drops below the threshold, the gate closes and silences that portion. This helps remove quiet background noise between speech or music.
What reduction level should I use?
Start with 'Moderate' for most recordings. Use 'Light' for subtle noise with minimal processing. Use 'Strong' or 'Very Strong' for heavily noisy recordings, but be aware these may introduce some artifacts or affect the natural sound.
What threshold should I use for the noise gate?
For typical recordings with moderate noise, use -50dB (Sensitive). Use -60dB (Very Sensitive) for very quiet noise. Use -40dB or -30dB (Aggressive) if you have louder background noise and want to cut more aggressively.
Will this remove all noise?
Noise reduction works best on constant, steady noise like hiss, hum, or room tone. It's less effective on irregular noise like clicks, pops, or voices in the background. For best results, record in a quiet environment.
What is the file size limit?
The maximum file size is 50MB. This ensures smooth processing in your browser.
Can I preview before downloading?
Yes! You can listen to the original noisy audio, then preview the cleaned version to hear the difference before downloading.
Is my audio file safe?
Absolutely! All audio processing happens directly in your browser using FFmpeg.wasm. Your audio file is never uploaded to any server.
What are common uses?
This tool is perfect for: cleaning voice recordings and interviews, reducing podcast background noise, removing fan or AC noise from home recordings, cleaning up Zoom/call recordings, preparing audio for video production, and improving amateur music recordings.