echo reduction -Sound Forge - PC - MAGIX Community Forums Archive

Subject:echo reduction Posted by: jackal Date:11/5/2004 2:39:35 PM A new client has delivered a room full of hard surfaces fed to a short shotgun. Sounds like the batcave. I have heard tell of a way to extract some usable audio from echo-ridded track. Don't know how. Thoughts?
Subject:RE: echo reduction Reply by: musicvid10 Date:11/5/2004 5:22:08 PM a room full of hard surfaces fed to a short shotgun Here is the link, but I am almost certain it will not help in this case. http://mediasoftware.sonypictures.com/forums/ShowMessage.asp?ForumID=3&MessageID=322408
Subject:RE: echo reduction Reply by: rraud Date:11/5/2004 6:23:26 PM Slap echos/early reflections are pretty much impossable to remove. By your discription, I think your SOL; Sorry.
Subject:RE: echo reduction Reply by: musicvid10 Date:11/5/2004 7:34:46 PM Slap echos/early reflections are pretty much impossable to remove. Yup, I agree. BTW, I can think of NO situations to use a shotgun indoors except on a very large stage or indoor arena.
Subject:RE: echo reduction Reply by: mpd Date:11/8/2004 7:20:48 AM There are a few ways to do echo-cancellation, but I don't know of any DX plugins that do it. The telephone company uses two types of echo cancellation (near-end and far-end). You may be able to run the sound through the far end algorithm, but telco is only 8 kHz and I'm not sure if it will handle multiple echos. The two standards for echo cancellation are G.165 and G.168, but I forget which is which. You may also be able to do something if you can get a good impulse response of the room recording with the same mic, and perform deconvolution. You may want to post your question on comp.dsp. I know the theory behind these techniques, but I don't know of any software off the top of my head that will do either.

Subject:echo reduction

Posted by: jackal

Date:11/5/2004 2:39:35 PM

A new client has delivered a room full of hard surfaces fed to a short shotgun. Sounds like the batcave. I have heard tell of a way to extract some usable audio from echo-ridded track. Don't know how. Thoughts?

Subject:RE: echo reduction

Reply by: musicvid10

Date:11/5/2004 5:22:08 PM

**a room full of hard surfaces fed to a short shotgun**

Here is the link, but I am almost certain it will not help in this case.
http://mediasoftware.sonypictures.com/forums/ShowMessage.asp?ForumID=3&MessageID=322408

Subject:RE: echo reduction

Reply by: rraud

Date:11/5/2004 6:23:26 PM

Slap echos/early reflections are pretty much impossable to remove.
By your discription, I think your SOL; Sorry.

Subject:RE: echo reduction

Reply by: musicvid10

Date:11/5/2004 7:34:46 PM

** Slap echos/early reflections are pretty much impossable to remove.**

Yup, I agree.

BTW, I can think of NO situations to use a shotgun indoors except on a very large stage or indoor arena.

Subject:RE: echo reduction

Reply by: mpd

Date:11/8/2004 7:20:48 AM

There are a few ways to do echo-cancellation, but I don't know of any DX plugins that do it.

The telephone company uses two types of echo cancellation (near-end and far-end). You may be able to run the sound through the far end algorithm, but telco is only 8 kHz and I'm not sure if it will handle multiple echos. The two standards for echo cancellation are G.165 and G.168, but I forget which is which.

You may also be able to do something if you can get a good impulse response of the room recording with the same mic, and perform deconvolution.

You may want to post your question on comp.dsp. I know the theory behind these techniques, but I don't know of any software off the top of my head that will do either.