How to Remove Background Noise in Audition

Audition users often face distracting background noise that can cloud dialogue, vocals, or instruments. This guide walks through practical steps to reduce or eliminate noise using common plugins and built-in tools, delivering cleaner audio with minimal artifact.

Whether you work on podcasts, music production, or film sound, understanding the right sequence of edits helps preserve signal quality while achieving a professional, broadcast-ready result.

Quick Answer

Start with a noise print, then apply the strongest safe reduction. If artifacts appear, back off and use a spectral noise reduction approach or a noise gate strategically. For remaining issues, combine multiple plugins in small, targeted adjustments rather than one heavy pass.

What You’ll Need

  • Adobe Audition noise reduction plugin or equivalent built-in noise reduction tools
  • VST noise reduction plugin for DAW for additional texture and flexibility
  • iZotope RX noise reduction plugin for advanced spectral cleanup
  • Spectral noise reduction plugin for audio options for precise removal of hiss, hum, or buzz
  • Noise gate plugin for DAW to clean up quiet sections and control spill
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Before You Start

Before editing, establish a clean, stable recording environment and plan your workflow. Note the sample rate and bit depth of the project, as aggressive processing can degrade high-frequency detail. Always work on a duplicate file to preserve the original recording.

Critical cautions: avoid overusing noise reduction on broadband noises—it can create metallic or swirly artifacts. When possible, fix the noise at the source (recording environment, mic techniques) to minimize post-production work.

Time estimates vary by project: a short dialogue scene may take 5–15 minutes per take, while full-length podcasts or multis track sessions could require 30–60 minutes for careful cleanup.

Step-By-Step: How To Remove Background Noise In Audition

  1. Identify the noise profile by playing several seconds of pure, silent sections to capture a noise print with the chosen plugin. This is your baseline for removal.

  2. Apply a gentle high-pass filter to cut low-frequency rumble that is not part of the voice or instrument, typically around 20–80 Hz, depending on the source.

  3. Use Adobe Audition noise reduction plugin or the DAW’s built-in option to capture the noise print and perform a first-pass reduction on the affected track.

  4. For broadband noise, switch to a spectral noise reduction plugin for audio to target narrowband bands without smearing the clean signal.

  5. Examine the waveform and spectrogram; apply targeted reductions to problem frequencies (hum 60 Hz and harmonics, electrical interference, breath pops) rather than a blanket change.

  6. If leakage or quiet sections remain, insert a noise gate plugin for DAW with a careful threshold and release setting to suppress residual noise without cutting authentic audio.

  7. Mild dynamic processing after noise reduction can help maintain consistency; avoid harming natural dynamics by over-compression.

  8. Sweeten the result with a light equalization pass to reintroduce intelligibility if the noise removal dulls vowels or brightens sibilants unnaturally.

  9. Render a short test segment, listen on multiple devices, and adjust parameters if artifacts or pumping are detected.

  10. Repeat steps 3–9 on affected segments only, rather than applying heavy processing to the entire track.

  11. Render a final pass with the highest safety margin, and compare with the unedited version to confirm improvements without noticeable artifacts.

Troubleshooting

Symptom Likely Cause Fix Prevention
Audible artifacts (swirly noise) after reduction Over-aggressive processing Dial back the reduction amount; use spectral methods with narrower bands Work with higher-quality capture and avoid extreme gains
Loss of vocal clarity Over-smoothing of high frequencies Reduce filter strength; restore presence with gentle EQ Apply noise reduction in smaller steps
Hum or buzz remains Electrical interference not captured in the noise print Target specific frequencies with a narrow notch filter Correct grounding and mic setup during recording
Gate pumping during speech Inappropriate gate thresholds Adjust attack/release and threshold for natural closure Use a slower release and side-chain keying

Common Mistakes

  • Relying on a single heavy-handed noise reduction pass across the entire track

  • Ignoring the source of noise and attempting to fix everything post‑recording

  • Overlooking spectral nuances, which leads to artifact introduction

  • Using too low a sample rate or bit depth in the project, which constrains processing quality

Tips For Best Results

  • Work at a high monitoring level with good headphones or monitors to hear subtle artifacts early.

  • Save multiple preset configurations for different sources (speech, music, ambients) to speed up workflow.

  • When in doubt, combine light reductions with targeted EQ boosts rather than a single strong pass.

  • Document the settings used for each clip to facilitate consistent future edits.

Call A Professional

Seek professional help if the noise level is extreme, the project requires broadcast-grade standards, or if artifacts persist after multiple passes. Stop and consult a sound engineer when:

  • Audio remains heavily degraded despite multiple attempts

  • Inconsistent background noise appears across scenes or takes

  • Project has strict archival or legal requirements for audio clarity

FAQ

What is the fastest way to reduce noise in Audition?

Capture a noise print and apply a light, iterative reduction with spectral methods for best balance between noise removal and audio quality.

Can I use third-party plugins with Audition?

Yes, use compatible VST noise reduction plugin for DAW options to augment built-in tools.

How do I know if noise reduction is too strong?

Listen for artifacts like metallic timbres or loss of intelligibility; back off until the sound is natural.

Is spectral noise reduction better than a gate for background hiss?

Spectral methods excel at preserving transients, while a gate can clean quiet ranges; often a combination yields the best results.

Should I always remove hum first?

Yes, targeting consistent hum or buzz early helps prevent ring­ing and masking of desired signals.

Can noise reduction damage dynamic range?

Yes, excessive processing can flatten dynamics; apply gentle reductions and monitor levels carefully.

Buying Guide

Choosing the right tools to remove background noise in Audition depends on the source material and workflow. Consider factors like the size of your project, the typical noise profile, and whether you prefer integrated workflows or modular plugins.

Key Buying Factors

  • <bSize and scope: For solo projects, a compact set of essential plugins may suffice; larger studios may opt for a full suite of spectral tools.
  • Noise level and spectral range: Look for plugins that handle broadband noise as well as narrowband hum or hiss.
  • Energy efficiency and CPU load: Some spectral processes are CPU-intensive; factor in system performance.
  • Controls and presets: Prefer intuitive controls with sensible defaults and useful presets for common scenarios.
  • Placement and workflow: Plugins that integrate seamlessly with Audition or your DAW save time during editing.

Comparison Perspectives

  • Built-in vs. third-party: Built-in tools are convenient; third-party options often offer advanced spectral control.
  • Single-purpose vs. multi-function: Spectral reduction plugins focus on noise, while gate and EQ tools offer broader management of dynamics.
  • <bRealtime vs. offline processing: Real-time plugins enable live monitoring; offline processing often yields deeper cleanup.

Would you benefit from a combined setup that uses a dedicated spectral reduction plugin alongside a noise gate for gateable silence? Testing across a few tracks can reveal the optimal balance for your recordings.