How to Remove Background Noise in Audition

Background noise can ruin a recording and make dialogue hard to understand. This guide walks American users through practical, step-by-step methods to reduce or remove unwanted noise in Adobe Audition, using commonly available plugins and built‑in tools. The approach combines traditional noise profiling, adaptive processing, and final listening checks to deliver clearer audio without sacrificing natural voice tone.

Quick Answer

To dramatically reduce background noise in Audition, identify the noise profile with a short noise print, apply a noise reduction effect or a dedicated noise suppression plugin, and then manually fine‑tune spectral or dynamic processing. For best results, use a combination of a precise noise profile and gentle processing, followed by a light high‑pass filter to reduce rumble.

What You’ll Need

Adobe Audition noise reduction plugin — built-in tools or third‑party integrations for targeted noise removal
iZotope RX Standard plugin for audio cleanup — industry‑standard suite for advanced noise reduction
Waves X-Noise noise suppression plugin — additional suppression option for tricky noise profiles
Clean, dry audio samples to test settings
Reference monitors or good quality headphones

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Before You Start

Before processing, consider the recording environment and file quality. Ensure you have a clean reference section where only noise is present to capture an accurate noise print. Keep a backup copy of the original audio in case adjustments need to be reversed. Typical time for a mid‑length interview or narration ranges from 10 to 30 minutes of material to process, but longer sessions may require batch processing. Safety note: avoid over‑processing, which can introduce artifacts like metallic ringing or unnatural speech sounds.

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

Import and inspect: Open the audio file in Audition and listen for sections that contain noise but no desired signal. Note their frequency characteristics and duration.
Capture a noise print: Select a silent portion of the track, then open the noise reduction tools and capture a noise print. This print guides subsequent reductions.
Apply noise reduction (Audition built‑in): Choose the noise reduction effect and adjust the reduction amount while previewing. Aim to reduce noise without thinning the voice or flattening the dynamics.
Compare with a dedicated plugin: Load the iZotope RX Standard plugin for audio cleanup or the Waves X-Noise noise suppression plugin on a parallel track to compare performance and artifacts. Use the plugin’s spectral analysis to identify stubborn hums or hiss.
Fine‑tune with adaptive tools: If available, enable adaptive or dynamic processing to respond to changing noise characteristics. This helps preserve softer speech while reducing louder background sounds.
Apply a high‑pass filter to remove low‑frequency rumble (e.g., under 80 Hz) without affecting the voice fundamentals. Adjust cutoff and slope to taste.
De‑essing and gentle compression: If sibilant sounds become harsh after noise reduction, apply a light de‑esser. Follow with a subtle compressor to even out levels without making artifacts obvious.
Audit at multiple speeds: Listen at normal, slower, and louder playback levels to ensure the noise reduction remains natural across volume changes.
Render and compare: Bounce a short processed clip and compare to the original. Ensure the noise floor is reduced without introducing noticeable artifacts.
Final polish: Use a light analyzer pass to confirm no residual hum or hiss remains and that the dialog remains natural and intelligible.
Document settings: Record the parameters used for future sessions, so you can reproduce results or refine them efficiently if needed.

Troubleshooting

Symptom	Likely Cause	Fix	Prevention
Voice sounds metallic or underwater	Over‑aggressive noise reduction	Back off the reduction amount; use a gentler profile	Test on short snippets before applying globally
Persistent hiss after processing	Low‑level high‑frequency noise not captured in print	Refine noise print and apply a secondary filter focused on high frequencies	Record in a quieter environment; use proper mic technique
Gain pumping or breathy artifacts	Over‑compression after noise reduction	Reduce compressor ratio and adjust attack/release	Balance dynamics before heavy processing
Background hum remains (60 Hz or harmonics)	Electrical interference not captured by noise print	Use targeted notch filters or specialized hum removal in RX	Check power supply and mic cables during recording
Processing introduces stereo widening or phase issues	Plugin misalignment on stereo track	Center the vocal on the mix or re‑encode with mono compatible settings	Avoid excessive processing on the same stem

Common Mistakes

Relying on a single, heavy pass of noise reduction rather than a staged approach
Ignoring the impact on voice naturalness in pursuit of silence
Processing across the entire track without testing on representative segments
Using overly bright equalization that exaggerates artifacts

Tips For Best Results

Work with short, representative clips to tune parameters before applying to the full file
Save multiple preset variants for different voice types or recording environments
Use a layered approach: basic noise reduction first, then targeted denoise with a plugin if needed
Keep a consistent monitoring level and use reference material for calibration
When using third‑party plugins, ensure they are compatible with Audition’s VST/AAX formats and properly licensed

Call A Professional

Consider consulting a professional if: the noise profile includes complex reverberation, the audio contains multiple speakers with different noise profiles, or the recording environment cannot be reliably controlled. If urgent restoration is required for legal, archival, or broadcast purposes, a qualified audio engineer can assess phase alignment, noise floor consistency, and loudness normalization with industry standards.

FAQ

What is the best first step to remove noise in Audition?

Capture a noise print from a silent section and apply a gentle reduction to establish a clean baseline before refining with plugins.

Can I use third‑party plugins with Audition?

Yes. Plugins like iZotope RX Standard and Waves X-Noise can be integrated to supplement built‑in tools, offering advanced spectral editing and suppression.

How do I know if I’ve over‑processed the audio?

Listen for artifacts such as metallic tones, underwater sound, muffled speech, or altered voice dynamics. If detected, reduce processing and re‑evaluate.

Should I always apply a high‑pass filter after noise reduction?

Not always, but a light high‑pass filter helps remove low‑frequency rumble. Adjust the cutoff to preserve voice fundamentals.

Is it better to denoise before or after equalization?

Generally, denoise first to clean the signal, then apply EQ to shape the voice without emphasizing residual noise.

What file formats are best for preserving quality during noise reduction?

Lossless or high‑bitrate WAV files preserve fidelity when performing multiple processing passes.

Can background noise be completely removed?

Some noise will remain, especially in poor recordings. The goal is to reduce it to inaudible levels while keeping speech clear and natural.

How do I compare results across plugins?

Process the same segment with different plugins side by side and compare perceptual clarity, naturalness, and absence of artifacts.

Buying Guide

When selecting tools to help remove background noise in Audition, consider size, noise handling capabilities, compatibility, and workflow impact. For many users, a combination approach works best: a capable built‑in workflow with optional third‑party plugins for challenging noise.

Size And System Impact

Most noise reduction tasks are CPU intensive but manageable on modern workstations. Ensure your computer meets the plugin requirements and that Audition is updated to support the latest plugin formats.

Noise Handling Capabilities

Look for a plugin that offers spectral editing, precise noise profiling, and adaptive processing. The combination of Audition’s native tools with plugins like iZotope RX Standard and Waves X-Noise can cover a wide range of noise types.

Energy Efficiency and Resource Use

Processing heavy noise reduction can increase CPU load. Plan edits in sessions, render intermediate results, and avoid stacking multiple high‑intensity plugins on a single track where possible.

Controls And Presets

Intuitive controls for noise print capture, reduction amount, and spectral shaping help speed up workflows. Save presets for different voice types (narration, dialogue, podcast) to maintain consistency across projects.

Placement And Monitoring

Place the processing chain close to the top of the signal path to maximize clarity for subsequent effects like compression and EQ. Regularly monitor with reference headphones or calibrated monitors to avoid misjudging artifact presence.

What To Compare

Compare native Audition noise reduction with third‑party plugins on the same clip. Consider artifact levels, voice naturalness, computational load, and ease of integration into your current workflow.