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Dialogue audio sounds thin and roomy – how do you clean it up in post?

Lighting & Audio Created: 09.08.2026 11:50 41 Views
Hey everyone, I'm a solo creator shooting talking-head videos for my tech review channel. I recently upgraded to a Rode NTG4+ shotgun mic on a boom, but my dialogue still sounds thin and has an annoying roomy echo, especially when I'm not close to the mic. I record in my living room with lots of hard surfaces – wooden floor, bare walls, a big window. I know treating the room is the ideal fix, but I'm on a budget and can't do major acoustic treatment right now.

I edit in DaVinci Resolve Studio (free version), and I've tried using the built-in EQ and compressor, but I'm not getting the results I want. I've also heard about iZotope RX and Audacity's noise reduction, but I'm not sure which approach works best for this specific problem. What are your go-to plugins or techniques for cleaning up dialogue that sounds thin and echoey? Any tips for getting a more present, radio-like sound in post without making it sound too processed?

Replies (4)

I feel your pain – roomy dialogue is a nightmare. First, make sure you're using the NTG4+ correctly: it's a shotgun, so it needs to be close to your mouth (6-12 inches) and pointed directly at your mouth, not at your chest. Also, the NTG4+ has a high-pass filter switch – if it's on, it might be cutting too much low end, making it sound thin. Turn that off unless you're dealing with rumble.

In DaVinci Resolve, try the Fairlight page. Add a compressor (like the built-in 'Dialog Compressor' preset) to even out levels, then use the EQ to add a presence boost around 3-5 kHz (try +2-3 dB) and a high-pass filter at 80-100 Hz to cut rumble. For the roominess, you can use the 'Voice Isolation' effect in Fairlight – it's surprisingly good at removing reverb. Set the amount to around 50-60% to avoid artifacts.

If you want a free standalone tool, download Audacity and use its 'Noise Reduction' effect: capture a noise profile from a silent section (like a room tone), then apply it with moderate settings. But be careful – overdoing it can make your voice sound hollow. Also, consider using a dynamic mic like the Shure SM7B if you can; they're less sensitive to room acoustics than shotguns.
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framezone92 yazdı:

In DaVinci Resolve, try the Fairlight page. Add a compressor (like the built-in 'Dialog Compressor' preset) to even out levels, then use the EQ to add a presence boost around 3-5 kHz (try +2-3 dB) and a high-pass filter at 80-100 Hz to cut rumble.



That's solid advice, but I'd also recommend looking into iZotope RX if you can afford it – the De-reverb module is a game-changer for this exact issue. I use RX 10 Elements (the free version) which has a basic De-reverb, and it works wonders on roomy dialogue. You can also use the spectral repair tool to remove specific echoes if you have a really bad reflection.

Another trick: record a few seconds of room tone in your space (just silence, but with the ambient noise). Then, in Resolve, you can use that as a reference to create a noise reduction profile with the 'Noise Reduction' effect in Fairlight (the one with the 'Learn' button). It's not as advanced as RX, but it helps.

For the thinness, try a multiband compressor – Resolve has one. Use it to gently compress the 200-400 Hz range to add body, and the 4-6 kHz range to add clarity. Also, don't be afraid to use a de-esser if you have sibilance issues after boosting the highs.
CapCut is all you need for short-form content.
I've been in the same boat, and honestly, the best fix is to get the mic closer and treat the room minimally. You don't need to spend a fortune – just hang some thick blankets on the wall behind you and lay a rug on the floor. That kills the slap echo instantly. I did that with a $20 moving blanket and it made a huge difference.

In post, I use a combination of a high-pass filter (100 Hz), a gentle EQ dip at 300-500 Hz to reduce muddiness, and a presence boost at 5 kHz. Then I add a subtle slapback delay (like 15-20 ms) to thicken the voice – it mimics the effect of a doubling track and gives it more body. But be careful with delay time; too long and it'll sound like a cave.

Also, check your mic placement relative to reflective surfaces – the NTG4+ has a narrow pickup pattern, but it still picks up reflections from the sides. Try pointing it away from the window and any bare walls. If you're using a boom, make sure the mic is angled so the null points (the sides) are facing the reflective surfaces.
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Thanks everyone for the detailed replies! I tried the Fairlight Voice Isolation and the EQ tips from framezone92, and my dialogue sounds way cleaner already. The room tone trick from audiowave77 also helped a lot – I recorded a few seconds of silence and used the noise reduction to tame the hum from my PC. I also moved my desk so the mic points away from the window, and I hung a thick blanket on the wall behind me – that made a noticeable difference even before post.

I'm still saving up for iZotope RX, but for now the free tools in Resolve are doing the job. I really appreciate the advice on the high-pass filter and the presence boost – my voice sounds much more present and less thin. Thanks again for saving my audio!
TikTok growth is all about the first 3 seconds hook.

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