[audacity4blind] Re: find zero crossing
- From: David Bailes <david_bailes@xxxxxxxxxxx>
- To: "audacity4blind@xxxxxxxxxxxxx" <audacity4blind@xxxxxxxxxxxxx>
- Date: Tue, 15 Jan 2013 18:45:59 +0000 (GMT)
Hi Cuong,
my understanding of zero crossings goes something like this.
If you've selected some audio, and are about to cut or delete it, then if you
"find the zero crossings", then this adjusts the selected time range slightly,
so that the amplitudes at the start and end are close to zero, and this
minimizes any clicks that might be introduced when deleting or copying and
pasting. You can find "find zero crossings" on the edit menu, and it has the
shortcut z.
I suppose you could find the zero crossings before exporting, that is ctrl+a to
select everything, z to find zero crossings, and then export selected. However,
my guess is that the start and end of most recording projects as fairly quiet
anyway.
David.
________________________________
From: Dang Manh Cuong <dangmanhcuong@xxxxxxxxx>
To: Audacity For Blind <audacity4blind@xxxxxxxxxxxxx>
Sent: Tuesday, 15 January 2013, 11:50
Subject: [audacity4blind] find zero crossing
Hi listers
In some of materials about podcasting
I read, they recommend find zero crossings and remove it before exporting.
However I don't understand how it work in audacity. I know the zero crossings
appears when joining 2 part of audio. Does it accessibles? and how to
use?
Happy to recieve your help
Thanks in advance.
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Dang Manh Cuong
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