Video Production

What is Noise Reduction?

Noise reduction is the process of removing unwanted background noise from video audio tracks, improving clarity and professionalism of spoken content.

Noise Reduction Explained

Background noise includes HVAC systems, traffic, keyboard clicking, room echo, electrical hum, and ambient sounds. Noise reduction algorithms analyze the audio frequency spectrum to distinguish speech from noise and attenuate unwanted frequencies. AI-powered noise reduction (like RNNoise, NVIDIA Broadcast, or Adobe Podcast) significantly outperforms traditional spectral noise gates by using neural networks trained on thousands of hours of noisy and clean audio pairs. Clean audio is critical for video content: viewers tolerate poor video quality more than poor audio quality. For voiceover content, noise reduction should be applied before text-to-speech to ensure clean source audio.

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Related Terms

Voiceover

A voiceover is narration or dialogue recorded separately from on-screen visuals and laid over the video during editing, providing audio context without showing the speaker on camera.

Background Music

Background music is audio played underneath the primary content of a video (narration, dialogue, or ambient sound) to set mood, pace, and emotional tone.

Transcription

Transcription is the process of converting spoken audio from a video or audio recording into written text, producing a verbatim or edited text document representing the spoken content.