UMass Wearables FAQ
Sound
Sound services are provided by the
alsa drivers.
How do I set the headphone volume?
Use either alsamixer
or aumix
.
What is a good default sound configuration?
Master: 80%
Master Mono: 100%
PCM: 90%
MIC: 0% (but unmuted)
Input Gain: 87%
PC Speaker volume: 20%
All other channels should be muted.
What are the access permissions of the sound devices?
I checked: only the person logged into the console has access
permissions for the audio and mixer devices.
Machine: czi
The display appears to be out of sync with the video signal.
Move the ball joint between the HUD electronics and the LCD element
(there appears to be a bad wire).
Machine: pham
The display appears to be out of sync with the video signal.
Don't know the answer to this one yet.
Machine: finn
Sound does not seem to work when the headphones are connected directly
to the HUD.
Yes. There seems to be a hardware problem.
Machine: neo
Sound does not seem to work at all.
Yes. There is a problem with the mixer chip.
ViaVoice
ViaVoice reports a fair or poor sound level quality
Make sure that you are using the HUD with the computer (not the
wrist-mounted display).
If you are using the HUD and microphone, make sure that the microphone
element is positioned near and oriented at your mouth (but is not
directly in front of your mouth).
XVoice
XVoice does not seem to work with xterm
Yes. This is a known bug. Try nxterm.
General
What are the names of the machines?
Their informal names are: finn, idoru, czi (short for Count Zero
Interrupt), pham, and neo. Their
network hostnames can be found on the
machine tracker page.
What does it mean if the 'Update Time' on the machine tracker page
is not current?
The machine is most likely off the net.
What do the machine names mean?
This is left as an exercise to the interested reader.
fagg@cs.umass.edu
Last modified: Thu Feb 14 11:04:54 2002