Noise Removal for Podcasters: A Practical Guide

Audio quality has a big effect on whether podcast listeners stick around. People will stop listening because of poor audio even when the content is great. Background noise, whether hiss, hum, fan noise, or room echo, is the most common audio quality problem podcasters face.

This guide covers what you need to know about removing noise from podcast recordings.

Why podcast audio quality matters

Listeners forgive a lot in podcasting: imperfect edits, occasional stumbles, conversational tangents. What they do not forgive is constant background noise that makes them work harder to understand what is being said. Sustained background noise is cognitively fatiguing. Listeners unconsciously attribute noisy audio to lower production quality, which affects how they perceive the content itself.

Getting your audio clean is one of the highest-return investments in podcast production.

Common sources of podcast noise

HVAC noise: heating and cooling systems are the single most common noise complaint in podcast recordings. They produce a consistent broadband noise that sits right in the mid-frequency range where speech lives.

Computer fan noise: if you are recording on a laptop, the fan may spin up during recording, especially if you are running audio software simultaneously. USB audio interfaces can move this processing off the main CPU.

Room echo: recording in a large, bare room creates reverb that muddies speech clarity even when there is no obvious “noise.” Soft furnishings, carpet, curtains, and acoustic treatment all help.

Microphone handling noise: if the mic is on a desk, footsteps, typing, and desk thumps transfer through the stand into the recording. A shock mount and boom arm help significantly.

Remote guest noise: when interviewing guests over the internet, you are at the mercy of their recording environment and connection quality.

Treating noise at the source

Before reaching for noise reduction tools, eliminate noise at the source where possible:

• Move away from the HVAC vent: even a few feet makes a meaningful difference
• Turn off the HVAC during recording: record in short segments between climate control cycles if needed
• Record in a closet or treated room: clothes, carpet, and soft surfaces dramatically reduce room noise
• Use a dynamic microphone: dynamics like the Shure SM7B reject more room noise than condenser mics
• Position the mic correctly: a few inches closer to the mouth raises the signal well above the noise floor

Podcast noise removal in post

When noise makes it into the recording, podcast noise removal tools can save the take. The workflow depends on your editing software.

Using Noise Remover (no software required)

For quick cleanup of individual recordings:

1. Export your recorded track as a WAV or MP3 file
2. Open Noise Remover in your browser
3. Upload the file and click to process
4. Download the cleaned file and reimport into your editing software

This works well for occasional cleanup or for processing guest recordings that arrived with too much noise.

Noise removal in Audacity

Audacity’s built-in noise reduction works in two steps:

1. Select a 1-2 second section of “noise only” (no speech) from the beginning or end of the recording
2. Go to Effect > Noise Reduction > Get Noise Profile
3. Select the entire track
4. Apply Effect > Noise Reduction with moderate settings

Start with reduction values of 12-18 dB and sensitivity around 6. Apply, listen, and adjust.

Dealing with remote guest audio

Remote guest audio is often the hardest to fix because you have no control over the recording environment. When receiving guest audio:

• Ask guests to record locally (not just through the video call) using a tool like Riverside.fm or Zencastr
• Request they record in the quietest room available, away from appliances
• Process their audio independently before mixing with yours

Noise Remover works well for guest audio because the guest can process their own recording without installing software. They just need a browser.

Recommended processing chain for podcasts

Apply these in order for consistently clean podcast audio:

1. Noise reduction: AI-based for best naturalness (see above)
2. Low-cut filter: high-pass at 80 Hz to remove low-end rumble
3. Noise gate: optional, to silence gaps between sentences
4. Compression: levels out volume differences for consistent listening
5. Loudness normalization: target -16 LUFS for podcast platforms

Setting realistic expectations

No tool can completely recover audio that was recorded in genuinely terrible conditions. If the background noise is louder than the voice, or if the recording was made with a very low-quality microphone at maximum gain, the options are limited.

That said, most podcast recordings that “sound noisy” have the voice coming through clearly enough for AI tools to work effectively. A consistent fan hum or light room noise is very manageable with modern denoising.

Start with the free Noise Remover tool for your next recording and hear how much difference clean audio makes.