Entering attack times > 1000 ms in noise gate.

Help for Audacity 2.x.x on Windows.

ImageThis forum is for Audacity 2.x.x on Windows.

  • Please state which version of Windows you are using, the exact three-section version of Audacity from Help > About Audacity and whether you obtained the .exe installer or the zip.

  • Audacity 1.2.x and 1.3.x are obsolete and no longer supported. If you still have those versions, please upgrade at https://www.audacityteam.org/download/.
    The old forums for those versions are now closed, but you can still read the archives of the 1.2.x and 1.3.x forums.

Entering attack times > 1000 ms in noise gate.

Permanent link to this post Posted by EricLeonard » Sat Jul 15, 2017 9:56 pm

The manual indicates that attack/decay times > 1000 ms may be entered by using text instead of the slider. I find, however, that when I enter times larger than 1000 ms, exp. 1100 ms, using the keyboard, I get a validation error indicating that all times must be between 10 and 1000 msecs. Is this a bug or am I misunderstanding something here?
I'm using Audacity version 2.1.3, Windows 10. I believe that I used the .exe installer for Audacity but am not 100% sure.
EricLeonard
 
Posts: 3
Joined: Sat Jul 15, 2017 9:39 pm
Operating System: Windows 10

Re: Entering attack times > 1000 ms in noise gate.

Permanent link to this post Posted by kozikowski » Sun Jul 16, 2017 9:56 am

What are you doing? What's the job?

Having a Noise Gate attack one second after an audio event would sound awful.

Koz
kozikowski
Forum Staff
 
Posts: 36976
Joined: Thu Aug 02, 2007 5:57 pm
Location: Los Angeles
Operating System: OS X 10.9 Mavericks

Re: Entering attack times > 1000 ms in noise gate.

Permanent link to this post Posted by EricLeonard » Sun Jul 16, 2017 12:42 pm

I'm doing something rather unconventional.

I will be creating a series of math videos in PowerPoint for YoutTube. The audio will consist of my voice with occasional "chime" sounds.

I need to get rid of both a steady background noise in addition to some lip smacking noises that are getting picked up by my mic after most of my sentences.

I discovered that the combination of a low pass filter and the noise gate (attack/recover time in this case is 300 msecs), worked nicely.
The problem is that the chime is a much higher frequency than my voice and the LPF destroys it.

So, to regenerate the chime, I created a second track where I first run the same voice/chime combination through a high pass filter that lowers the amplitude of my voice without affecting the sound of the chime too much. It helps the chimes to stand out more. After the HPF, I'd like to automatically mute everything except the chimes. The noise gate seems to be the obvious way to do this, but a 1000 msec attack/recovery time ends up abruptly cutting off the trailing end of the chime. I believe that a longer attack/recovery time here would do the trick.

For now, I'm just manually removing every thing except the chimes on the second track and that seems to work. But I'm hoping to make this process more automatic.

Any thoughts would be most appreciated.
EricLeonard
 
Posts: 3
Joined: Sat Jul 15, 2017 9:39 pm
Operating System: Windows 10

Re: Entering attack times > 1000 ms in noise gate.

Permanent link to this post Posted by Trebor » Sun Jul 16, 2017 3:06 pm

EricLeonard wrote: lip smacking noises that are getting picked up by my mic ...

Audacity's DeClicker plugin, (available here), is an effective tool for that job ...

Image
Suggested settings to remove mouth clicks.


EricLeonard wrote: The noise gate seems to be the obvious way to do this, but a 1000 msec attack/recovery time ends up abruptly cutting off the trailing end of the chime. I believe that a longer attack/recovery time here would do the trick.

To obtain an attack/release of >1000ms , change the code in the NoiseGate plugin ...

change 1000 to something bigger.png
change 1000 to something bigger.png (18.4 KiB) Viewed 60 times

Save your modified version of the NoiseGate plugin with a name ending ".ny", (not ".txt")
http://wiki.audacityteam.org/wiki/Creating_Nyquist_Plug-ins
Trebor
 
Posts: 3646
Joined: Sat Dec 27, 2008 5:22 pm
Operating System: Windows Vista

Re: Entering attack times > 1000 ms in noise gate.

Permanent link to this post Posted by steve » Sun Jul 16, 2017 5:28 pm

EricLeonard wrote:The manual indicates that attack/decay times > 1000 ms may be entered by using text instead of the slider.

I presume that you are referring to the documentation here: http://wiki.audacityteam.org/wiki/Nyqui ... Noise_Gate

That was correct for older versions of Audacity, but is no longer the case, so I have updated that page.
If you were referring to documentation somewhere else, please give a link so that it can be updated.

If you really need longer than 1000 ms in Noise Gate, you can modify the plug-in as described by Trebor. I would recommend using NotePad++ for modifying plug-ins as other editors may mess up the character encoding, line endings or file extension and prevent the plug-in from working. NotePad++ is free and available here: https://notepad-plus-plus.org/
9/10 questions are answered in the FREQUENTLY ASKED QUESTIONS (FAQ)
steve
Senior Forum Staff
 
Posts: 43906
Joined: Sat Dec 01, 2007 11:43 am
Operating System: Linux *buntu


Return to Windows



Who is online

Users browsing this forum: Google [Bot] and 12 guests