aplay/arecord start-up error

[Watson, Keith]

Hi all,

Since we are posting arecord usage I thought my two cents might help some.

arecord -q -d 2820 -f cd -r44100 -c2 -I track1.raw track4.raw

I use this to record 47 minutes of, oh lets say a 4 track source, off a
standard tape deck. The point is that you can split the channels with the -I
switch, if you have a need.

Keith Watson
Sypris Electronics
Email:  Keith.Watson at sypris.com <mailto:Keith.Watson at sypris.com> 
Phone: (813) 972-6270
Fax #:  (813) 972-6842
 
 


-----Original Message-----
From: 'Georgina' [mailto:gena at gena-j.net]
Sent: Thursday, April 18, 2002 8:13 AM
To: speakup at braille.uwo.ca
Subject: Re: aplay/arecord start-up error 


Hi

Glad that your requested the version number of the alsa driver as some of
the lines may produce interesting results.  I see that the -d (Duration) was
set at 2 hours, that's a lot of disk space.

Using alsa 09 beta 10 I use these lines:

arecord -d 1800 <filename>.wav

This will produce a 8 bit mono file of 14Mb of half an hour.

arecord -f cd -d 1800 <filename>.wav

Which will record a 16 bit stereo CD quality recording.  Can't remember the
disk space used for this half an hour recording.

A "arecord --help" will tell users what switches are available for their
particular version.  Providing the little indians don't get you, lol.

Gena



Blindness Advocacy and Self Help Online www.bashonline.org

>
>Hi Igor,
>
>The script I sent Greg, and which he resent, is not too
>meaningful without a detailed commentary, and it is specific to
>version 0.9.0beta11 of the alsa drivers. So if you just copy that
>script it may or may not work for you.
>
>In general you need to use a bunch of options with arecord in
>addition to naming the file you want to create. You need to
>specify the sampling rate you want to use, the sample size, the
>file type, how many channels to create, and the duration of the
>recording you want to make. How you do all those things will vary
>somewhat depending on your version of alsa. The documentation is
>pretty skimpy, but it is all there in the man page if you have
>the patience to tease it out.
>
>If you can tell us the alsa version you are using and show us the
>command line you tried to use perhaps we can get more specific.
>
>Chuck
>
>On Wed, 17 Apr 2002, Igor Gueths wrote:
>
>> Hi all. I can play audio fine, however when I went to try to experiment
>> with arecord, I got the following: main 445: audio open error:
>> inapropriate ioctl for device. Anyone have any ideas as to what I could
be
>> missing or doing wrong? Thanks!
>>
>>
>> _______________________________________________
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>>
>
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>The Moon is Waxing Crescent (28% of Full)
>
>
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