Audacity Forum

Kman2015 wrote:Good afternoon folks!
I am new to Audacity. I've been experimenting with trying to remove snare drum ring from some of my old band recordings.
Kman

This is your original: Is this what you mean by "Snare Ring"?? If that is the case, I subtracted that sound, and this was left:

Ramon,

Good evening. Thanks for the interest in this subject. What I mean by "snare ring" is the snare drum ringing/vibrating every time it is hit. In the sample the snare drum is on beats 2 & 4...just like most straight forward rock or smooth jazz. The sample you provided was actually the hi-hat opening, which is fine. That said, what you did helped slightly. Hopefully by clarifying what I mean by snare, you may be able to provide some other advice. Thanks again.

Kman

I'm lost. You're going to have to give it to us in timeline seconds. Or compare it to a performance that doesn't have the problem. I think you have just officially joined the group with specialized knowledge of a very tiny problem and the rest of us are going to be little or no help.

If you don't have the studio split tapes, there's no way you're going to dig out one artifact of one instrument in the middle of a mixed performance. Anything we do is going to degrade the other instruments.

We can't split a mixed performance into individual instruments and that's basically what you want us to do.

Koz

Koz,

The Snare hits (with accompanied ring) come at 2.25-2.40 secs / 3.85-4.0 secs / and 5.4-5.55 secs into the clip.

Kman

Kman2015 wrote:Ramon,

Good evening. Thanks for the interest in this subject. What I mean by "snare ring" is the snare drum ringing/vibrating every time it is hit. In the sample the snare drum is on beats 2 & 4...just like most straight forward rock or smooth jazz. The sample you provided was actually the hi-hat opening, which is fine. That said, what you did helped slightly. Hopefully by clarifying what I mean by snare, you may be able to provide some other advice. Thanks again.

Kman

It's very hard to spot in the sample file, although one is aware of something wrong. However, there is too much going on with cymbals, rides, trumpet and so on.
You've most likely picked up some room resonances with your kit.
One would normally use a parametric EQ to filter out this boominess (bass drum) or ringing (snare).
Even better is an adjustable (multi-) band compressor. The drums can be made really tight in this fashion.

The mix lacks some foundation, I think, at least in comparison to the solo instrument, whereas the upper end is rather prominent (again, band compression could help to reduce the HiHat/Cymbals in order to make them more distinct in time).

Excluding the trumpet gives: If possible, provide a longer sample (e.g. through a file sharing service).

Regards
Robert

kozikowski wrote: I'm lost. You're going to have to give it to us in timeline seconds.

I fully agree.

kozikowski wrote: I think you have just officially joined the group with specialized knowledge of a very tiny problem and the rest of us are going to be little or no help.

If you don't have the studio split tapes, there's no way you're going to dig out one artifact of one instrument in the middle of a mixed performance. Anything we do is going to degrade the other instruments.

We can't split a mixed performance into individual instruments and that's basically what you want us to do.

Koz

I respectfully beg to differ, Koz. See this post:

http://forum.audacityteam.org/viewtopic ... 28&t=83156

-Ramon

Is this the sort of thing that you are after Kman2015?

Kman2015 wrote:Good afternoon folks!
I am new to Audacity. I've been experimenting with trying to remove snare drum ring from some of my old band recordings.
Kman

Kman:

Since the futuristic solution is still being cooked, I have another potential solution for you.

(1) Play your snare drums, with the same sequence, as it is being recorded. In the middle of that, you will remove the O-ring (which presumably is causing the undesired artifact).

(2) Make 2 WAV files: one with the pesky "snare ring" noise and one without it. Use 16 bit depth/resolution. A short recording will suffice.

(3) Download this free (a gem!) program, Audio DiffMaker

http://www.libinst.com/Audio%20DiffMaker.htm

It will tell us the exact difference between the 2 audio clips.

-Ramon

RamonFHerrera, you have previously told us that you are a complete novice with audio, and although you say that you have been studying noise removal techniques for the past couple of weeks, that does not make you an expert. While I applaud your enthusiasm for the subject, I don't think that you are yet in a position to be able to advise other Audacity users. If you were fully familiar with Audio Diff Maker and understood how it works, you would realise that your suggestion to Kman2015 is nonsense and will not help him to achieve his aims. I would therefore respectfully request that you desist from misguiding other forum users.

steve wrote:RamonFHerrera, you have previously told us that you are a complete novice with audio, and although you say that you have been studying noise removal techniques for the past couple of weeks

Hence the word "potential".

I may be a novice in audio -as a user of apps written by others- but I have a couple of engineering degrees. One in EE and one in CS. Have spent more than my share of time behind an oscilloscope and solving Laplace and Fourier transforms. I am the author of one of the first applications which solved analog circuits, with graphical input (for the Macintosh, circa 1984). That specialty is based on Fourier transforms, with which folks in the audience are (or should be) to some degree familiar. Additionally, I have a stack of research papers that I am reading as we speak.

In these 2 weeks I have managed to get in touch with some pioneers of state-of-the-art research, plus THE authority in Noise Reduction (as a user), the teacher of teachers, my current hero, this guy:

https://www.askvideo.com/about/trainers/matthewhepworth

Who has offered to advice me in my search for automated Noise Elimination (as opposed to inferior Reduction)

At this point I am trying to find the difference in performance between:

(a) Yours Truly (whom I have maintained in the most deliberate manner a novice, for the purposes of my humble study)
(b) A "gun for hire" with decades of experience, who cleaned up an audio clip for me. It took him several weeks.
(c) La crème de la crème in NR techniques (the above mentioned guy who reviewed the work done by level (b)).
(d) Automated Noise Elimination software.

Your "cease and desist" suggestion has been duly noted.

-Ramon

"Free advice is worth every penny you pay for".

"Failure teaches more than successes"

ps: Kman, one problem you may encounter with Audio DiffMaker is that it seems to run only on Windows XP.