KVR Audio

pluginnow · Post by **pluginnow** » Thu Sep 28, 2006 10:02 pm

Where's the link??

beej · Post by **beej** » Thu Sep 28, 2006 10:02 pm

You can upload it to Rapidshare, or YouSendIt, for free hosts. But if you can solve a problem like this, I'm sure you can work out how to get a file onto the internet(!)

I started a thread about this a while ago, asking if you could use impulse responses to effectively de-convolve a dry signal from the wet signal, and the DSP guys were relatively convinced that, while in theory the idea is sound, in practice it can't work.

So I'm interested in your claim, as well...

TristanWilliams · Post by **TristanWilliams** » Thu Sep 28, 2006 10:20 pm

It seems like a wind up to me.

pluginnow · Post by **pluginnow** » Thu Sep 28, 2006 10:31 pm

Ok guys,

One thing you should take in consideration is that this algoritm was not intented (initiatly) for such profund reverbs.

I ended up introducing 2 stages of the "cleaning". One for the first 100ms and the other for the rest of the tail. And I had to add a 3rd that only works in mono.

The first reverb was VERY pronounced. You can download it, the link is in the first page.

The second reverb had a strange problem. The source shouldn't be too clear (I think), and the reverb really has improved the situation.

Withtout the reverb, both files seem strange. But this is all the technology permits, and it's a lot.

Anyway, this examples are one of the most difficult I found. I can de-reverb any commercial song, but this was way ahead.

For both examples, the same algotitm.

Here's the first one:

http://rapidshare.de/files/34807123/Bduffy_Vocal.wav

ps: I'll post the second one as soon as it gets uploaded. AND and really had a file hosting service, but it's outdated

kilroy · Post by **kilroy** » Thu Sep 28, 2006 10:36 pm

TristanWilliams wrote:It seems like a wind up to me.

Actually, there is absolutely nothing stopping anyone from doing this....except for the fact that it is impossible.

pluginnow · Post by **pluginnow** » Thu Sep 28, 2006 10:40 pm

kilroy wrote:
TristanWilliams wrote:It seems like a wind up to me.
Actually, there is absolutely nothing stopping anyone from doing this....except for the fact that it is impossible.

Have you listened the file??

kilroy · Post by **kilroy** » Thu Sep 28, 2006 10:43 pm

Absolutely.

sfxmachine · Post by **sfxmachine** » Thu Sep 28, 2006 10:47 pm

Well, it does seem to shorten the reverberation -- this is particularly noticeable with the last note. But there is a strong metallic "musical noise" artifact throughout, characteristic of spectral subtraction and related techniques.

pluginnow · Post by **pluginnow** » Thu Sep 28, 2006 10:48 pm

Listen the original!!

TristanWilliams · Post by **TristanWilliams** » Thu Sep 28, 2006 10:48 pm

Pants.

Good effort, but ultimately pants. Sounds like you sampled the reverb tail and fed it through a noise reduction plugin like Waves Xnoise.

bduffy · Post by **bduffy** » Thu Sep 28, 2006 10:49 pm

Urhg, called into a meeting. Downloading now.

pluginnow · Post by **pluginnow** » Thu Sep 28, 2006 10:49 pm

TristanWilliams wrote:Pants.

Good effort, but ultimately pants. Sounds like you sampled the reverb tail and fed it through a noise reduction plugin like Waves Xnoise.

Thats nonsense.

See if that Xnoise plugin can do this to your file.

http://rapidshare.de/files/34808455/TristanWilliams.wav

TristanWilliams · Post by **TristanWilliams** » Thu Sep 28, 2006 10:52 pm

I want to hear it but I have reached my limit for free users. Please use yousendit as it doesn't suck nearly as badly.

bduffy · Post by **bduffy** » Thu Sep 28, 2006 11:10 pm

Yep, can't download the file. So what's the criteria here? You need a very smooth, high-quality reverb?

pluginnow · Post by **pluginnow** » Thu Sep 28, 2006 11:15 pm

No modulation, no absurd excess.

ed: oh, and no pianos

De-reverberation - The final cut