Hello David and all,
Having looked at the archive material on the Talking Computers site, I can
now confirm that the material is up to date.
This means that all my articles up to this date are to be found near the
bottom of the page under “tutorials and other links”, and “The Audacity
tutorials by Jim Gamage”.
Again, it is good to look at David Bailes guide for up to date information
about Audacity.
Best Regards, Jim.
From: David Bailes
Sent: Monday, March 16, 2020 12:57 PM
To: audacity4blind@xxxxxxxxxxxxx
Subject: [audacity4blind] Re: audio on how to use
Hi Andre,
concerning podcasts. Andrew Downie, who's on this list has a short
introduction, and this includes selecting audio:
https://www.sendspace.com/pro/dl/v56cn4
In addition, Jim Gammage is doing a series on Audacity at Talking Computers:
http://www.talking-computers.org.uk/jimonaudacity.html
Note that there are some more recent articles by Jim, but they don't seem to
have been added to this page.
I gave a general idea about how to you might go about removing hiss in a
previous post, and I'll include them again hear. They may make more sense
after you've listened to some of the podasts.
To remove the hiss from a the audio in a track in Audacity.
The track needs to be selected, which it is by default when you open or
import a file.
You first need to select a time range which covers a section of the audio
where there is only hiss, and no speech or music or whatever.
As an example, I'll assume that there is a section at the start of the
audio. You could select a time range by:
1. Start playback.
2. Press the X key to stop playback and position the cursor at the time when
you pressed the key. You would need to press the X key whilst there was
still only hiss.
3. Press shift + J to select a time range from the start of the track to the
cursor position.
Now you can open the Noise reduction effect, which is on the Effect menu. A
get noise profile button is the initial focus. Press it, and the dialog
closes.
Next, select a time range which covers all the audio in the track. You can
do this by pressing J to move the cursor to the start of the audio, and then
Shift + K to select from the start to the end of the audio.
Open the Noise reduction effect again. The dialog contains a number of
parameters which you can change, but you could just try using the defaults,
and simply press the OK button.
You can then play the audio and see how well the hiss has been removed.
If a suitable section of audio which just contains hiss is not at the start
of the audio, and you need help selecting it, just let us know.
David.
Virus-free. www.avast.com
