[Cin] offtopic: Digitize and record Audio via Line-In Jack or via USB adapter?

[Terje J. Hanssen]

To complement my last post above:

I discovered the recordings with the second program above, 
'audio-recorder' were 'fake files' quiet without sound when playback 
with vlc or other programs. Loaded in Audacity showed only straight 
lines. Possibly there is some gstreamer related issue on my current 
system, because a warning complained about missing gstreamer plugin, 
when I tried to save audio as mp4. However, I don't care to debug this 
program issue for now.

The audio clips recorded with 'gnome-sound-recorder' worked fine.
For one or another reasen I had to unplug the usb connection from 
UFO202, before playback sound could be heard in speakers and earphones 
plugged to the mobo backpanel jacks.


*Audacity*
I saved a testproject with Audacity and exported some test clip with the 
following properies:

~/Audacity_project/export> file *.*
testproject-1.flac: FLAC audio bitstream data, 16 bit, stereo, 44.1 kHz, 
1058356 samples
testproject-1.mp3:  MPEG ADTS, layer III, v1, 128 kbps, 44.1 kHz, JntStereo
testproject-1.ogg:  Ogg data, Vorbis audio, stereo, 44100 Hz, ~160000 
bps, created by: Xiph.Org libVorbis I
testproject-1.wav:  RIFF (little-endian) data, WAVE audio, Microsoft 
PCM, 16 bit, stereo 44100 Hz


~/Audacity_project/export> mediainfo *.* | egrep 'name|Format|bit rate'

Complete name                            : testproject-1.flac
Format                                   : FLAC
Format/Info                              : Free Lossless Audio Codec
Overall bit rate mode                    : Variable
Overall bit rate                         : 715 kb/s
Format                                   : FLAC
Format/Info                              : Free Lossless Audio Codec

Complete name                            : testproject-1.mp3
Format                                   : MPEG Audio
Overall bit rate mode                    : Variable
Overall bit rate                         : 227 kb/s
Format                                   : MPEG Audio
Format version                           : Version 1
Format profile                           : Layer 3
Format settings                          : Joint stereo
Minimum bit rate                         : 32.0 kb/s

Complete name                            : testproject-1.ogg
Format                                   : Ogg
Overall bit rate mode                    : Variable
Overall bit rate                         : 158 kb/s
Format                                   : Vorbis
Format settings, Floor                   : 1

Complete name                            : testproject-1.wav
Format                                   : Wave
Overall bit rate mode                    : Constant
Overall bit rate                         : 1 411 kb/s
Format                                   : PCM
Format settings                          : Little / Signed

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Terje