Record Audio in Rev on Linux OS?

John Patten johnpatten at mac.com
Thu Apr 22 11:13:47 CDT 2010


Thanks for the suggestion Peter!

As for how to go about doing what you described in Linux, I'm at a loss.

I have no experience using Rev and Shell scripts in Linux. The reason  
why I am interested is that I working on a little utility that allows  
students to record an audio response and then ftp the resulting audio  
file to a server. This works fine on my Mac, and I presume it will on  
Windows too (though have not tested extensively yet).

We have recently begun using Netbooks running Ubuntu Remix with our  
students (about 600 of them currently). We do have Audacity on them  
for recording audio, among a whole collection of other great software  
tools.

I would like to be able to get my little utility to work on the  
Netbooks too. I have looked up krecord and hunted some discussion  
lists related to command line commands for this tool.

I don't see too much in the area of command line language for  
Audacity, so I'm guessing we will have to use krecord or ALSA. These  
laptops do have ALSA arecord and aplay and I do see an example in man  
for "arecord:"

arecord -d 10 -f cd -t wav -D copy foobar.wav

(I'm guessing in the example above, I would need to give the complete  
path when saving the foobar.wav file. Something like ~/home/student/ 
foobar.wav )

I have never done anything like this with Rev before and need some  
direction. I'm guessing that I'm going to need to create a function  
that will contain the shell script and then call it from a button when  
I want to record...? But I don't have a clue what it would look like???

Does someone have a simple example stack I can pick apart?

Thank you!

John Patten






------------------------------

Message: 11
Date: Mon, 19 Apr 2010 12:45:13 -0800 (PST)
From: Peter Alcibiades <palcibiades-first at yahoo.co.uk>
Subject: Re: Record Audio in Rev on Linux OS?
To: use-revolution at lists.runrev.com
Message-ID: <1271709913251-2016534.post at n4.nabble.com>
Content-Type: text/plain; charset=us-ascii


Dunno about Rev directly, but you can go out to shell, and then use  
the Linux
command line tools.  The easiest gui recording tool is krecord, but  
there
are lots of non-gui ones.  Use zenity to get a gui for them.  Then when
you've captured the file, go out to the shell again to play it.  Or  
maybe
this is what you were trying to avoid?  Most things that Rev cannot do  
can
be done in the shell.



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