Anyone who’s reviewed EVP recordings or investigation footage knows the frustration: you captured something promising, but background noise buries the audio you actually need. Hum from electrical wiring, wind, HVAC systems, field recordings are rarely clean. That’s where DaVinci Resolve audio noise reduction comes in, giving you a powerful (and free) way to salvage those clips.
At Haunt Gears, we spend a lot of time testing the gear that captures paranormal evidence, from EMF meters to thermal cameras to audio recorders. But good equipment is only half the equation. Post-processing your audio can mean the difference between a compelling EVP and an unintelligible mess. DaVinci Resolve’s Fairlight page has built-in tools specifically designed for this kind of work.
This guide walks you through the exact steps to reduce or remove background noise from your audio in DaVinci Resolve, covering methods available in both the free and Studio versions. Whether you’re cleaning up investigation recordings or editing video content, you’ll have a clear process to follow by the end.
What you need before you start
Before you touch a single knob on the Fairlight page, make sure you have the right setup in place. Skipping this step wastes time and can produce results that don’t hold up across different playback systems. The two most important things to confirm are your version of DaVinci Resolve and the condition of your source audio files.
Free vs. Studio: Know which version you have
The biggest factor in your workflow is whether you’re running DaVinci Resolve Free or DaVinci Resolve Studio. Both versions include Fairlight’s core noise reduction tools, but Studio unlocks the dedicated Noise Reduction plugin with separate controls for Voice, Hum, and Broadband noise. Free users work with the built-in FairlightFX suite, which still delivers solid results but requires a slightly different approach.
If you’re doing serious audio cleanup for investigation footage on a regular basis, the Studio version’s dedicated plugin saves significant time and gives you precise control over specific noise types.
Here’s a quick side-by-side of what each version offers:
| Feature | Free Version | Studio Version |
|---|---|---|
| FairlightFX Noise Reduction | Yes | Yes |
| Dedicated Noise Reduction plugin | No | Yes |
| Voice isolation control | No | Yes |
| Hum removal control | No | Yes |
| Broadband noise control | No | Yes |
System and file requirements
Your computer’s performance matters more than most editors expect. DaVinci Resolve processes audio in real time on the Fairlight page, so a slow machine causes playback stuttering when you stack multiple effects. Blackmagic Design recommends at least 16 GB of RAM for smooth Fairlight operation, and a dedicated GPU helps the overall application stay responsive.
Beyond hardware, your source audio format directly affects how much you can recover. Resolve handles WAV, AIFF, MP3, and AAC files natively. For paranormal investigation recordings, WAV files at 48 kHz or higher give you the most frequency detail to work with, which matters when isolating faint sounds buried under background noise. Before you start any DaVinci Resolve audio noise reduction work, convert compressed formats like MP3 to WAV to avoid processing already-degraded audio.
Make sure your clips sit inside a project with the correct sample rate configured under Project Settings > Master Settings > Timeline Audio Format. A sample rate mismatch causes pitch and timing shifts that no noise reduction plugin can correct after the fact.
Step 1. Diagnose the noise and prep the clip
Before you apply any DaVinci Resolve audio noise reduction, you need to know what kind of noise you’re dealing with. Listening to your clip on headphones before touching any settings tells you more than any meter reading. Rushing into plugins without this step means you risk over-processing and damaging the signal you actually want to keep.
Identify the noise type
The three most common noise types in paranormal investigation recordings are broadband hiss, electrical hum, and intermittent ambient noise. Broadband hiss sounds like a steady static layer across the full clip. Electrical hum sits at a fixed frequency, typically 60 Hz in the US, and often carries harmonics above it. Intermittent noise, like footsteps or wind gusts, requires manual editing rather than a noise reduction plugin.
Getting the noise type wrong and applying the wrong fix is the fastest way to destroy audio that may contain real evidence.
Use Resolve’s waveform display and audio meters to visually scan the clip before playback. A broadband noise problem shows a consistently elevated waveform floor, while electrical hum creates repeating low-end wave patterns you can spot right away.
Prep the clip before processing
Duplicate your original clip onto a separate track before touching any settings. This gives you a clean reference to compare against at every stage. Then trim any dead air from the start and end of the clip to keep your Fairlight timeline organized. Run through this checklist before moving on:
- Duplicate the original clip to a reference track
- Trim silence from the clip’s start and end
- Confirm the project sample rate matches the source file
- Switch to headphones for accurate monitoring
Step 2. Reduce noise in DaVinci Resolve Free
The free version of DaVinci Resolve gives you access to FairlightFX Noise Reduction, which handles broadband hiss and steady background noise effectively without requiring an upgrade. You won’t get the dedicated plugin panel that Studio users have, but you can still run a solid davinci resolve audio noise reduction workflow with the tools already built into the Fairlight page.
Open the FairlightFX Noise Reduction panel
Navigate to the Fairlight page by clicking the musical note icon at the bottom of the screen. Right-click the audio clip you prepped in Step 1, then look to the right side of the Fairlight interface and open the FairlightFX bin from the Effects panel. Drag the Noise Reduction effect directly onto your clip to attach it.
Load the effect onto the clip itself rather than the track so the settings stay tied to that specific recording and don’t affect other clips on the same channel.
Set the noise profile and adjust the controls
Once the Noise Reduction panel opens, play back a section of the clip that contains only background noise, with no dialogue or target sounds present. Click Learn to let Resolve analyze that section and build a noise profile from it. After the analysis runs, the controls will activate. Work through these settings in order for the cleanest result:
- Set Noise Reduction Amount to 50-70 as your starting point
- Set Smoothing to 3 to reduce processing artifacts
- Choose Soft under Reduction Type for clips with dialogue
- Play the full clip back on headphones and check for over-processing before committing
Step 3. Use Noise Reduction in DaVinci Resolve Studio
DaVinci Resolve Studio gives you a dedicated Noise Reduction plugin that separates Voice, Hum, and Broadband controls into distinct sliders. This matters for paranormal investigation audio because different noise sources need different treatment, and the Studio plugin lets you target each one without affecting the others. The result is a cleaner signal with less processing damage to the audio you want to keep.
Access the Dedicated Noise Reduction Plugin
On the Fairlight page, select your prepped clip and open the Effects panel on the right side of the interface. Under FairlightFX, locate the Noise Reduction plugin and drag it onto your clip. A dedicated panel opens with three independent noise channels, which is the core advantage over the free version.
Apply the plugin directly to the clip, not the track bus, so each recording in your project gets its own customized noise profile.
Dial In Voice, Hum, and Broadband Controls
Start with Hum Reduction set to 60 Hz to target electrical interference captured during your investigation. DaVinci Resolve audio noise reduction works most effectively when you address the dominant noise source first before moving to subtler layers. Use this sequence for the most controlled result:
- Set Hum to 60 Hz and raise the amount to 70
- Set Broadband amount to 40-60 as a starting point
- Raise Voice isolation to 60 to protect dialogue and EVP frequencies
- Play back on headphones and reduce any control showing audible artifacts
Adjust each slider in small increments rather than large jumps to avoid smearing the audio or introducing the metallic, warbling sound that comes from over-aggressive noise reduction.
Step 4. Polish dialogue with EQ and dynamics
After running davinci resolve audio noise reduction, your clip still benefits from two more passes: equalization to remove residual problem frequencies, and light compression to even out volume. Noise reduction alone doesn’t fix a muddy low-end or inconsistent levels, so EQ and dynamics processing finish the job and make your audio actually usable.
Cut the Low-End Buildup with EQ
Open the Fairlight EQ on your clip by right-clicking and selecting "Clip Attributes," or apply the FairlightFX Equalizer directly from the Effects panel. Most investigation recordings carry low-frequency rumble below 80 Hz that noise reduction won’t fully eliminate. Apply a high-pass filter to cut everything below that point and work through these adjustments:
- Apply a high-pass filter at 80 Hz with a 12 dB/octave slope
- Cut 200-300 Hz by 2-4 dB to reduce muddiness around voice fundamentals
- Boost 2-4 kHz by 1-2 dB to add clarity to speech and EVP content
- Roll off above 10 kHz by 2 dB to remove residual hiss the noise reduction left behind
Compress to Even Out Volume
Your dialogue and EVP recordings rarely sit at a consistent volume level, especially across a full investigation session. Apply the FairlightFX Compressor with a 4:1 ratio and a threshold around -18 dB to bring quieter moments forward without making the loudest peaks harsh.
Set the attack to 10 ms and release to 80 ms so the compressor reacts quickly enough to control peaks without flattening the natural character of the audio.
Keep your output gain at unity until the EQ and compression are both dialed in, then raise it together at the end for a clean, balanced result.
Wrap-up and next steps
You now have a complete davinci resolve audio noise reduction workflow that covers both the free and Studio versions of Resolve. Start with the noise diagnosis in Step 1, apply the right plugin for your version of the software, then finish with EQ and compression to bring your audio to a usable state. Each step builds on the one before it, so skipping ahead tends to create more problems than it fixes. Save your settings as a preset once you find a configuration that works well for your typical investigation recordings.
Clean audio only matters if the recording equipment you used in the field was capable of capturing a strong signal in the first place. A recorder with good signal-to-noise performance gives you significantly more to work with before post-processing even begins. If you want to upgrade your investigation setup with gear built to capture cleaner recordings and sharper evidence, check out the paranormal investigation equipment at Haunt Gears and find tools matched to serious fieldwork.
