To listen to audio output from the systems, you will need to supply your own headphones with a standard stereo mini-plug. It is probably necessary to plug in on the back of the system. We originally bought extension cables to lead the audio around the front, but the cables all got stolen.
SPKR OUT jack.
Under FreeBSD, the mixing is under software control using the
mixer program. For example:
16:16 has the microphone almost muted, in my experience.
See the man page for mixer for more details.
.au) files on the workstation
in two different ways. Suppose you have an audio file sounds.au
that you wish to hear. One way to do it is to play it over the PC
speaker using the following command:
mixer command as describe above.
/dev/mcd0.
You can use it to play an audio CD using the cdplay command,
for example:
mixer command as described above. It is also possible to mount CD-ROMS containing data; this is described here.
MIC IN jack on the back of the system, or a high-level source
into the LINE IN jack, use the mixer program
to set the appropriate gain level for the audio input, and then run:
^C to interrupt the recording when you are done.
Note that the file stuff.au will grow at a rate of about
1MB/min while recording is going on.
A recording can be played back as follows:
nas (Network Audio System) provides general-purpose
audio manipulation capabilities in a client/server model that works will
with the X Window System. See the nas man page for more
details. I have only tried this system briefly, and though a number
of the tools seemed to work, I had trouble recording and there was
some flakiness in the server. This may eventually get fixed -- faster
if somebody looks into it and tells me what is wrong. webmaster@ug.cs.sunysb.edu