AC3 Filter configuration

Posted on 2004-10-15
Last Modified: 2008-02-01
I installed AC3 filter. It seems it works fine, but on some divx/xvid movies it plays a very low sound (meaning my speakers are full volume but I barely hear anything). I disabled the ac3 filter (from control panel) and I hear fine now. How can I configure AC3 filter so I will have it enabled but without a very low volume? what is wrong with the default configuration?
Question by:stardust126
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 4
  • 2
  • 2
  • +2

Expert Comment

ID: 12318335
The AC3 audio format is (from memory, correct me people if I'm wrong here) is for dolby digital (a special breed) 5.1 surround sound.

I downlaoded Fahrenheit 9/11 and I needed to install a AC3 filter to listen to the audio and I had the same difficulty, no matter how hard I tried to get that volume cranked it wouldn't.  Maybe it's just the way the audio is encoded?

Maybe I'm wrong.  The fact of the matter is I didn't persure the issue and I'd be interested to see if there is a fix or a configuration that could make the volume louder when filtering using AC3.


Author Comment

ID: 12318514
Go to control panel, disable ac3 filter and see that your sound will work alot better... maybe less clear, but you will hear alot better.

Expert Comment

ID: 12319900
i have ac3 filter installed and i don't have any issues with the default settings there already...
 i can post the deafaul setting if you want.

you can try uninstall and then reinstall
Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!


Author Comment

ID: 12319926
I tried that. I even upgraded to the newest version, but nothing helps.
Are you playing divx/xvid movies with media player and sound is fine?

Expert Comment

ID: 12320156
Mine plays everything fine...
Although i installed mine through the k-lite mega codec pack

Expert Comment

ID: 12321304
Hi I hope this can help....this also happened to me.

You can also change the settings of your Directx in order to hear the sound.


Author Comment

ID: 12328098
No, thats not the problem.
The AC3 Filter is doing the problem. If I disable it, sound is fine (not the same quality as ac3, but I can hear something without putting my speakers to max)
I know that many other people have this problem, but I couldnt find anyone who knows a solution. I was hoping someone here could help me with what is wrong with the default configuration and how to fix it.
LVL 11

Accepted Solution

yukele earned 125 total points
ID: 12516583
Hi, this is what worked for me (using ac3filter v0.70b)

Open the ac3filter config - start > ac3filter > ac3filter config

In the bottom left of the "Main" tab there is an option "Preset"

Choose the "loud" preset, restart your player.

Hope that helps

Author Comment

ID: 12518217
Yep, it did the work :)

Another solution I found: either disable AC3 filter (and enjoy lousy sound quality) or go to System and choose the option of "prefer other decoder" instead of "prefer AC3", on most movies it finds a better decoder that gives better sound volume.
LVL 11

Expert Comment

ID: 12518295
glad to have helped

Featured Post

Migrating Your Company's PCs

To keep pace with competitors, businesses must keep employees productive, and that means providing them with the latest technology. This document provides the tips and tricks you need to help you migrate an outdated PC fleet to new desktops, laptops, and tablets.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
wireless name in LAN adapter 14 91
Need software for photo capture from TV tuner card 20 110
internet fax? 7 32
Ping to management is timing out. 6 55
This guide will walk you through the essential considerations and tech stack for building scalable websites. Know how to grow your business the smart way!
Developer portfolios can be a bit of an enigma—how do you present yourself to employers without burying them in lines of code?  A modern portfolio is more than just work samples, it’s also a statement of how you work.
The viewer will learn how to successfully create a multiboot device using the SARDU utility on Windows 7. Start the SARDU utility: Change the image directory to wherever you store your ISOs, this will prevent you from having 2 copies of an ISO wit…
This is used to tweak the memory usage for your computer, it is used for servers more so than workstations but just be careful editing registry settings as it may cause irreversible results. I hold no responsibility for anything you do to the regist…

751 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question