collapse

Advertisement


Author Topic: Audacity Hiss Removal  (Read 6281 times)

Offline billythekidrock

  • Varmint
  • Trade Count: (+1)
  • Explorer
  • ******
  • Join Date: Mar 2007
  • Posts: 13440
Audacity Hiss Removal
« on: November 17, 2010, 01:33:30 PM »
Just got a question on noise removal so I thought I would write up how I do it. This will not work in every situation but it is a fast effective solution for what I need.

Down and dirty hiss removal.

Here is what I do.
After opening or recording a sound file you may notice small sound waves or hear an audible hiss.



I select a small portion of "noise" but nothing that I want to keep.




Then on the menu bar click Effect and then Noise Removal.
In the popup click "Get Noise Profile".
Then click Edit and Select All.
Click Effect and Noise Removal again. This time click Preview or Remove Noise.



If needed you can adjust the slider level to remove more or less noise.




Offline birdshooter1189

  • Trade Count: (+3)
  • Longhunter
  • *****
  • Join Date: Nov 2013
  • Posts: 589
  • Location: Port Orchard
Re: Audacity Hiss Removal
« Reply #1 on: May 07, 2020, 10:04:43 PM »
I'm processing some audio right now using your tutorial. I found another way to remove the hiss/background noise that works better for me.

On the main audacity screen, in the assortment of buttons along the top, just to the right of the cut/copy/paste buttons are two buttons that look like waveforms.  The button on the right is "silence audio selection".

You highlight a segment of audio file that you want silenced, then click that button and it silences it.

Offline Fl0und3rz

  • Forum Sponsor
  • Trade Count: (+7)
  • Legend
  • *****
  • Join Date: Oct 2010
  • Posts: 51553
  • Location: E. WA
Re: Audacity Hiss Removal
« Reply #2 on: May 07, 2020, 10:25:01 PM »
BTKR method is the way I do it. Trick is finding the sweet spot. Too much noise removal and you introduce non-natural sounding artifacts.

Offline birdshooter1189

  • Trade Count: (+3)
  • Longhunter
  • *****
  • Join Date: Nov 2013
  • Posts: 589
  • Location: Port Orchard
Re: Audacity Hiss Removal
« Reply #3 on: May 07, 2020, 10:40:38 PM »
I see, i misunderstood what he was explaining.  His method works great.

I was initially looking for a way to remove the static noises in-between a chicken chick sqwacking in distress.  If i selected and hit delete it shortened the clip.  I wanted the blank space there, i just wanted to mute everything in-between. 


I'm now working on a separate clip where i was transporting 2 cats in my diesel truck and they were meowing profusely.  Using the method above was able to remove the sound of the diesel engine (which carried through the cat's meowing) and it got rid of the engine noise both between meows and through the meows.

Offline Fl0und3rz

  • Forum Sponsor
  • Trade Count: (+7)
  • Legend
  • *****
  • Join Date: Oct 2010
  • Posts: 51553
  • Location: E. WA
Re: Audacity Hiss Removal
« Reply #4 on: May 07, 2020, 11:18:51 PM »
You could delete the noise between the sounds of interest and add back silence, I believe, using the same menu path, "generate silence."

BTKR method take a noise profile and subtracts it across the sound of interest.  Works well for regular noise such as fan hum.  I haven't found a good method for irregular or cyclic noise such as a diesel rumble.

 


* Advertisement

* Recent Topics

FFL preferences or warnings in Olympia or south Sound area? by JDHasty
[Today at 10:47:34 PM]


Boat registration by Happy Gilmore
[Today at 10:22:29 PM]


Bear behavior by jamesjett
[Today at 09:44:15 PM]


Norway Pass Archery Elk 2025 by Boss .300 winmag
[Today at 09:14:45 PM]


Entiat Quality tag by WAcoueshunter
[Today at 09:05:06 PM]


Idaho 2025 Controlled Hunts by JDArms1240
[Today at 09:03:40 PM]


Palouse/Mica (GMU 127) Access for Trades Work by dr.derek
[Today at 08:29:53 PM]


Pearygin Quality by MADMAX
[Today at 07:55:09 PM]


Teanaway bull elk by Caveman123
[Today at 07:43:44 PM]


Oregon results posted. by Caveman123
[Today at 07:40:47 PM]


2025 Draw Results by Yeti419
[Today at 07:27:32 PM]


Mudflow Archery by Yeti419
[Today at 07:26:25 PM]


Cowiche Quality Buck by dilleytech
[Today at 07:14:35 PM]


Rehome for GWP by Feathernfurr
[Today at 06:43:07 PM]


Vashon Island deer tag by bowhunter_1
[Today at 04:32:43 PM]

SimplePortal 2.3.7 © 2008-2025, SimplePortal