linuxaudio.org

Am 21.05.2012 23:48, schrieb Fons Adriaensen:

quoted text
> On Mon, May 21, 2012 at 10:04:13AM -0400, Ricardus Vincente wrote:

>

>> The lack of quality noise-reduction software for linux has been on

>> my mind quite a bit lately. I thought it might be a cool idea to

>> create a Kickstarter project to fund the development for this.

>> Mike from linuxDSP or Fons would be the best choices (I think) to

>> write the plugs.

>

> :-) Very flattering, but don't expect a single-click solution for

> something as volatile as removing unwanted noises from a recording.

> In some cases (and more often than one would think) it's just a

> matter of some EQ, in other cases a simple noise gate can do the

> trick, and sometimes you'll need a multiband expander using pre-

> measured statistics. It also depends on how the result is going to be

> used afterwards.

In the end it will be either a drum-track or vocal track or anything

else that could have been recorded in a studio in the basement of a

railway-station or it will be a restauration-effort to digitize a

vinyl or cassette.
In all cases: if it is hiss or hum, EQ or gate can help if used wisely

but I do not know any software for Linux that allows to cancle out a

train running through the one great vocals-take -- whithout destroying

the voice in the process that is.
IMHO: to do something like this the best way is to start with a tool

that visualises the sound to allow to really find and technically

analyse the problem. A human can hear, waht a train is and what a voice

is, for any software there is only frequency an amplitude so there needs

to be a tool that allows the human to teach the robot, what is noise and

what is signal.
The noise-remover in Audacity does that but is far too primitve to

achieve really good results.
To have the abilities known from Melodyne in Sonic Visualiser such as:

this part of the wave, this range of frequencies with this particular

sequence of amplitudes I can see in this graph is the evil one, go!

Cancle it!
This would be indeed, quite nice, methinks....
best regards
HZN
p.s.: I have seen a MAGIX-Technician doing such a trick in Sequoia some

5 years ago...
>

quoted text
> As in many cases, it's going to be the skills of the user rather than

> the tools that are going to determine success or failure.

>

> Ciao,

>

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