How to improve AI video audio: Pro techniques to get better sound

AI-generated videos continue to improve at an unprecedented pace, and each new model seems to one-up the last. But if you’re wondering how to improve AI video audio, you’re not alone; the sound is still the weakest link. Many people spot AI videos not because of what they see, but because of what they hear.

AI-generated audio often feels shallow and lacks depth. It usually has that compressed, metallic tone that gives the game away instantly. You can hear it for yourself in this video:

The good news is, there are several ways we can fix AI-generated audio like this. In this article, we’ll cover several tips, tricks, and techniques to help ensure the audio quality of your AI-generated videos matches the quality of the visuals. Let’s dive in! 

TL;DR

Most AI video tools generate low-quality audio. To fix it, and truly understand how to improve AI video audio, replace the dialogue, use an AI voice changer, clean the track with Adobe Podcast, add ambience and sound effects, and shape the tone with EQ. With a few layers of sound design, your AI scenes will feel cinematic instead of synthetic.

What makes AI video audio sound “off”?

AI-generated audio typically sounds metallic or thin because most video models compress speech heavily to prioritize visual output. This results in reduced frequency depth, inconsistent room tone, and flattened dynamics. Learning how to improve AI video audio often means restoring warmth, clarity, and environmental texture so the voice feels grounded in a real physical space.

How to improve the audio on your AI videos

1. Record real ADR or use a better AI voice generator

Replacing dialogue is still one of the most effective methods if you’re serious about how to improve AI video audio. You have two solid choices for this: record real voiceover (Automated Dialogue Replacement, known as ADR) or upgrade the default AI audio with audio from a dedicated next-gen AI voice generator.

How to do it:

• If you have the tools and time, you can record a clean voiceover track, even with your phone’s microphone.
• To sync things up perfectly, play the original AI video on your computer while you wear headphones.
• Listen to the audio playing, and just repeat it and record it on your phone’s microphone.
• Swap the audio in your video editing timeline.

Pro tip: You can further refine the audio you record on your phone with tools like Adobe Podcast. We’ll take a closer look at this technique later in this article.

If you prefer AI, create new lines with a dedicated generator like ElevenLabs or VoiceGen. Then take those audio files into your video editor, along with the original AI video clip, and simply edit them together. You can splice the best parts from all of the new AI audio clips to get the best-sounding match.

2. Use an AI Voice Changer

If you want to preserve timing while still focusing on how to improve AI video audio, an AI voice changer is a quick win. One of the best I have used is the ElevenLabs Voice Changer. Simply upload the original AI audio from your video, then select a new AI voice model that better fits with your video. And that is it! It will apply the new AI voice with the same speaking cadence and timing as the original audio.

This solves the common “re-timing” headache you get when generating new dialogue from scratch. It’s perfect for quick turnarounds or short-form content like TikTok.

3. Clean up your audio using Adobe Podcast

Even great voiceovers need polish sometimes. But this can be especially useful for any AI audio. Adobe Podcast is incredibly useful when exploring how to improve AI video audio without complicated editing tools.

How to use it:

1. Upload the audio file.
2. Choose your enhancement strength — start low to avoid artifacts.
3. Export the cleaned version and replace your original track.

Creators often treat this like a “pre-mastering” step. It’s especially powerful for phone-recorded ADR or monotone AI voices. You’ll instantly hear your dialogue go from thin and artificial to rich and professional. Think of it as giving your audio a mastering pass before you even start editing.

4. Enhance the sound design of the video

Once the dialogue sounds good, it’s time to build a world around it. Sound design dramatically affects how to improve AI video audio because most models generate visuals without environmental sound. Here’s three things you can add:

Add foley and sound effects to build realism

AI video generators rarely include environmental sounds. Without them, even a perfect voiceover feels detached. Foley (real-world sounds, such as clothing rustling, footsteps, or prop interactions) anchors the viewer in the scene.

How to use foley effectively:

• Add footstep sounds that match the surface your character walks on.
• Include subtle clothing movement during gestures.
• Layer object sounds (doors, switches, paper, tools).
• Blend at -15dB to -25dB so they don’t overpower dialogue.

On Envato, you can find thousands of real foley sound effects, or generate your own using SoundGen. You can find common foley sounds for: walking, clothing, leaves, and more.

Add background ambience to create depth and dimension

Ambience sounds are always good to add in to help sell your scene. Wherever your AI video takes place, simply search on Envato and you can find thousands of ambient sounds. Everything from city ambience to nature, or even room tones. Layer it under everything else to help build some dimension to your video clip.

Keep the ambiance subtle: too loud and it distracts; too quiet and it provides no atmosphere. Aim for a consistent noise bed across cuts to prevent jarring transitions.

Add stock music to support tone and mask imperfections

Depending on your scene, adding in stock music can also help complete your shot. (And it can help you mask sounds if your default AI audio is lacking.) Subtle corporate music, or more general background music can work great. This really is your own preference based on the content of your AI video clip and the mood you are going for.

5. Add depth with EQ (equalization and mixing)

AI voices often lack body, warmth, or clarity. EQ is one of the simplest, most reliable ways to understand how to improve AI video audio at a professional level. Then also roll off harsh highs to reduce digital “bite” sound, commonly associated with AI audio. You don’t need to be an audio engineer. Even basic EQ tweaks in Premiere Pro or Audition can make your voice feel more realistic and “in the scene.”

Try this starting point:

• Boost 150–300Hz slightly for fullness
• Add 1–2kHz for clarity
• Reduce 6–10kHz to soften harsh digital edges
• High-pass filter at 80Hz to remove rumble

Even small adjustments can turn a sterile AI voice into a believable human performance. Most editors — Premiere Pro, Final Cut, DaVinci — include built-in EQ presets you can tweak.

6. Enhance the audio with creative effects

Creative effects add character and style—another key part of how to improve AI video audio, especially when working with stylized content. These effects can be applied in your editing software of choice, like a video editor, or in a dedicated audio app or DAW. (You could even apply audio effects from apps on your phone. Just upload your audio file to your phone, apply the effect, and then download it back to your computer.  

Most video editors, like Premiere Pro, have a ton of built-in audio effects and filters. Use effects like Surround Reverb to make the sounds of your footage better match the shot environment. Use the Flanger effect to create a robotic voice sound. Or use the Graphic Equalizer to give the audio a vintage 1940’s radio vibe. All of these effects will help you to get more out of any AI audio you are working with!

Common mistakes to avoid

• Over-processing the voice. Too much EQ or enhancement makes the audio unnatural.
• Inconsistent ambience. Changing noise floors between shots creates “audio jumps.”
• Ignoring levels. Dialogue should sit clearly above music and effects.
• Skipping headphone checks. Mixes sound different on speakers vs. earbuds — test both.
• Using stereo effects on mono sources without blending can cause phase issues.

Pro tips for a more cinematic sound

• Record ADR under a blanket for a cheap, makeshift vocal booth.
• Use match EQ in some editors to make AI voice match real recordings.
• Layer ambience + room tone — they’re not the same thing.
• Stack subtle foley instead of one loud sound.
• Normalize all dialogue to -3dB before mixing for consistency.

Your AI video’s audio improved

AI video tools are evolving fast, but the sound often lags behind. The good news? Once you understand how to improve AI video audio, you can fix nearly every distracting flaw. Whether you’re swapping in ADR, enhancing your AI voices with EQ, or layering cinematic sound design from Envato, every step brings your video closer to feeling real. Do that, and your AI videos will sound just as polished as they look.