Re: [orca-list] Recording audio from the soundcard

[lsmithso hare demon co uk]

Hi: If you are running pulseaudio (the default for vinux I believe),
then the command "parec" may be easier to understand.

parec -d 1 > recording.wav

Records from the sound card on my system. You may have to change the
value of the -d arg to suit your hardware. It will be a small integer
starting at 0.  You can guess this, or you can be more scientific and
use:

pactl list sources



Another way to do this is with gstreamer:

gst-launch pulsesrc device=1  ! autoaudiosink

Will connect the mic to the default sound output device.  You can also
record with gstreamer:

gst-launch pulsesrc device=1 ! wavenc ! filesink
location=recording.wav





luciano de souza writes:


> If amixer is configured, I think I could record with arecord explained at:
> http://carthick.wordpress.com/2007/11/26/linux-recording-soundcard-output-using-arecord/
>
> A command to record 10 seconds could be:
>
> arecord -d 10 -f cd -t wav -D copy foobar.wav
>
> The problem is that I don't understand the language of manuals.
> "amixer scontrols" list the controls, but what Is called control?
> Well, the answer was
>
> Simple mixer control 'Master',0
> Simple mixer control 'Headphone',0
> Simple mixer control 'PCM',0
> Simple mixer control 'Front',0
> Simple mixer control 'Front Mic',0
> Simple mixer control 'Front Mic Boost',0
> Simple mixer control 'Surround',0
> Simple mixer control 'Center',0
> Simple mixer control 'LFE',0
> Simple mixer control 'Side',0
> Simple mixer control 'Line',0
> Simple mixer control 'Line Boost',0
> Simple mixer control 'IEC958',0
> Simple mixer control 'IEC958 Default PCM',0
> Simple mixer control 'Capture',0
> Simple mixer control 'Capture',1
> Simple mixer control 'Auto-Mute Mode',0
> Simple mixer control 'Input Source',0
> Simple mixer control 'Input Source',1
> Simple mixer control 'Rear Mic',0
> Simple mixer control 'Rear Mic Boost',0
>
> I don't understand what it means. But it points out the word
> "Capture". Perhaps, 'Capture',0 and 'Capture',1 is two channels of
> recording. I don't know any characteristics of my soundcard. Actually,
> when I wanted to record, I expected two find an application with two
> buttons: Record from the microphone, Record from the soundcard.
>
> Navigating from Internet, I found the command:
>
> amixer sget 'Input source',0
>
> I don't know what is 'Input source',0, but I tried to do:
>
> amixer sget 'Capture',0
>
> My hopeness is that command changed my Alsa settings to record from
> the soundcard, but after doing "arecord -d 10 -f cd -t wav -D copy
> foobar.wav", the file generated remained empty.
>
> Even if I understand the words of the amixer manual, I can't
> understand the meaning of it. My all experiance was to record sounds
> from the microphone and the soundcard with an Windows application, but
> the name of options was something like "Record from microphone" and
> "Record from soundcard".
>
> The difficulties are terible: I don't understand about sound settings,
> about Alsa, my english is not very well, I don't know very much about
> shellscript... Would be there a more simpler way to a beginer as me
> recording sounds from the soundcard?
>
> If the interface of Audio-Mixer was accessible, I could use
> Audio-Record and to do everything with graphical interfaces.
>
> 2014/1/11, Jason White <jason jasonjgw net>:
> > luciano de souza <luchyanus gmail com> wrote:
> > > Does someone have a tip to record sounds from the soundcard using
> > > terminal or a graphical application?
> > > I have certain preference to do it by means of terminal, but any tip is
> > > welcome!
> >
> > You could just use amixer or alsamixer to configure the input volume of
> > your
> > audio device. Amixer is a command line tool; alsamixer is a terminal
> > application. For recording, have a look at ecasound and read its
> > documentation
> > to find out whether it will meet your requirements.
> >
> > If you're using Pulse Audio, volume levels can be configured with pacmd
> > from
> > your shell prompt. I'm sure there are volume controls in GNOME as well,
> > which
> > Orca should be able to access. Under Pulse Audio, the microphone input is
> > referred to as a "source", whereas the audio output is referred to as a
> > "sink". Thus you would need to use the list-sources command first, obtain
> > the
> > index number of your microphone, then use set-source-volume to adjust it -
> > see
> > the pulse-cli-syntax(5) manual page.
> >
> > _______________________________________________
> > orca-list mailing list
> > orca-list gnome org
> > https://mail.gnome.org/mailman/listinfo/orca-list
> > Visit http://live.gnome.org/Orca for more information on Orca.
> > The manual is at
> > http://library.gnome.org/users/gnome-access-guide/nightly/ats-2.html
> > The FAQ is at http://live.gnome.org/Orca/FrequentlyAskedQuestions
> > Log bugs and feature requests at http://bugzilla.gnome.org
> > Find out how to help at http://live.gnome.org/Orca/HowCanIHelp
>
>
> -- 
> Luciano de Souza
> _______________________________________________
> orca-list mailing list
> orca-list gnome org
> https://mail.gnome.org/mailman/listinfo/orca-list
> Visit http://live.gnome.org/Orca for more information on Orca.
> The manual is at http://library.gnome.org/users/gnome-access-guide/nightly/ats-2.html
> The FAQ is at http://live.gnome.org/Orca/FrequentlyAskedQuestions
> Log bugs and feature requests at http://bugzilla.gnome.org
> Find out how to help at http://live.gnome.org/Orca/HowCanIHelp

-- 
Les Smithson