[audacity4blind] Re: Noise removal difficulties

  • From: "Dang Manh Cuong" <dangmanhcuong@xxxxxxxxx>
  • To: <audacity4blind@xxxxxxxxxxxxx>
  • Date: Tue, 7 Jan 2014 14:13:32 +0700

Hi
Do you use laptop to record? I think I used to have the same problem to you 
when I use my laptop, and plug the power. I solved this by record audio using 
laptop with battery only.
For the audio, you can go to the given link, and download the mp3 file. Don't 
need an ipod, or something like that.
  ----- Original Message ----- 
  From: Sharni-Lee Ward 
  To: audacity4blind@xxxxxxxxxxxxx 
  Sent: Tuesday, January 07, 2014 2:10 PM
  Subject: [audacity4blind] Re: Noise removal difficulties



  At Robbie: I checked the manual before attempting it to see what I had to do. 
I made sure I got a noise profile, but even so, it still turned down both the 
noise and my voice. It's a noticeable hum that sounds just a bit like an 
amplifier that isn't plugged into anything, but not quite as grating. I do have 
a speaker system that's both not plugged into my computer and turned off at the 
switch on the device itself, but not unplugged from the power-board behind my 
computer. Could that be it?

  At Cuong: I don't have an ipod, so I can't listen to that podcast. Thanks for 
taking the time to help me out, though.


------------------------------------------------------------------------------
  Date: Tue, 7 Jan 2014 13:50:09 +0700
  From: dangmanhcuong@xxxxxxxxx
  To: audacity4blind@xxxxxxxxxxxxx
  Subject: [audacity4blind] Re: Noise removal difficulties

  Hi
  You can listen to this podcast to know how the noise removal word. This isn't 
podcast for blind user, but I think you could understand by listening to the 
demo. This also have some tips to reduce noise before recording.

  On 1/7/2014 1:44 PM, Robbie wrote:

    Hi Sharni!

    To use Noise Removal you must first select a fraction of the track 
containing only the noise you want to remove. Then call Noise Removal and press 
g for Get Noise Profile. Only then should you select the whole track and apply 
the effect. The first control, Noise Reduction dB, is the value by which the 
target noise is reduced. Increasing that value may produce better results up to 
a point.

    Can you describe the noise you’re getting? Is it a hum or a buzz or more of 
a hiss? If it’s a hum, try shutting everything down that’s anywhere near your 
computer. A phone or an amp or a badly insulated cable may produce a hum. 
Sometimes it can also help to just use a different socket.



    Good luck! Robbie

    From: audacity4blind-bounce@xxxxxxxxxxxxx 
[mailto:audacity4blind-bounce@xxxxxxxxxxxxx] On Behalf Of Sharni-Lee Ward
    Sent: Tuesday, January 7, 2014 1:54 AM
    To: audacity4blind@xxxxxxxxxxxxx
    Subject: [audacity4blind] Noise removal difficulties



    I recently went to the control panel to disable all enhancements for 
recording. Now my voice is sounding more normal, but I have a horrendous 
continuous background noise that I'm assuming is generated by the computer 
itself, even though I'm using a microphone on my headset rather than the 
inbuilt one. I tried the noise removal effect, but I was having trouble setting 
the parameters. I'm considering trying the Notch filter, but that also sounds 
rather fiddly and I don't want to muddle through the process and get frustrated 
with it. I can't afford to get better hardware right now, so I could use any 
tips you may have. I've tried turning off my electric fan (which is a constant 
presence in my room), shutting my door and everything, but the hum is still 
there and I don't know how to get rid of it without turning my voice right down 
as well. I tried and then amplified it, but that just made the noise loud 
again. *pouts*



  -- 
  <="" title=""> 
  Dang Manh Cuong
  HCMC University of Pedagogy:
  The Educational Psychology 
  Mobile: +84 902-572-300
  E-mail: dangmanhcuong@xxxxxxxxx 
  Yahoo! ID: manhcuong0312
  Skype name: dangmanhcuong
  facebook: http://facebook.com/dangmanhcuong
  Website: http://ngoisaodanduong.com
  http://www.saomaicenter.org
  Projec-Website: http://dangmanhcuong.googlecode.com 

--------------
Dang Manh Cuong
HCMC University of Pedagogy:
The Educational Psychology 
Mobile: +84 902-572-300
E-mail: dangmanhcuong@xxxxxxxxx 
Yahoo! ID: manhcuong0312
Skype name: dangmanhcuong
facebook: http://facebook.com/dangmanhcuong
Website: http://ngoisaodanduong.com
http://www.saomaicenter.org
Projec-Website: http://dangmanhcuong.googlecode.com 

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