Posted 24 March 2005 - 01:35 AM
l hope this may be of some use to you;
Windows 2000 and Windows XP utilise “Plug and Play” to configure the
hardware of your computer system, including sound cards, so there is very little
for you to set up. Nevertheless, it is worth running through the following checks
so that you know where the various controls are.
If you have bought additional audio hardware then you will need to configure the
audio system to use the correct device. For example, I have a combination
headset comprising a microphone and headphones that connect to my PC via the
USB port. This headset is my preferred choice when working with the speech
recognition software, but not if I want to listen to a music CD. So I have to switch
between the two set-ups on a regular basis.
Use the Start menu’s “Settings” option to open the Control Panel and then locate
and double-click the Sounds and Multimedia icon. This will open up the Sounds
and Multimedia Properties window. You can also access
this panel by locating the “Volume” icon (if this is visible) in the taskbar and
clicking with the right mouse button. Select the option “Adjust Audio Properties”.
Select the “Audio” tab in the window and check to see the name of the “Preferred
device” in the Sound Playback and Sound Recording sections. If you have only
one audio device then its name will be displayed and there is nothing for you to
change. However, if you have two or more audio devices their names will appear
in a drop-down list. On my PC the two device names are “ESS Maestro” and
“USB Audio Device”. For speech work I want to make sure the preferred device
is my headset, so I select USB Audio Device from the list in both the Sound
Playback and Sound Recording sections.
I once forgot to change both and spent a
lot of time trying to work out why my voice wasn’t being recognised. So be
Next, select the “Sound” tab and check the box that says “Show volume control
on the taskbar”: it provides a shortcut to the audio control panels.
All PCs allow the user to change the sound recording quality, that is the sampling
rate and the number of bits per sample. On Windows 2000 and XP the quality is
set for each recording individually, whereas for earlier versions of Windows you
could set a preferred default value for all recordings.
From the Start menu, select Programs, Accessories, Entertainment, and then
Sound Recorder. This will start the Windows “Sound Recorder” application.
Once the application is running, select the “Properties” option from the File menu
to pop up the “Properties for Sound” window, shown in Figure 12. In the “Choose
from:” list select the “Recording formats” option and then click the “Convert
Now …” button. This will open the “Sound Selection” window.
There are three predefined recording qualities to choose from: CD Quality, Radio
Quality, and Telephone Quality. Select from the list the quality that is most
appropriate to the task in hand. Click OK to close the Sound Selection window
and then click OK again to close the Properties for Sound window.
Alternatively, you can set the recording quality when you save a recorded sound.
From the “Save As” window click on the “Change…” button located at the
bottom of the window. This action will pop-up the “Sound Selection” window.
Select the desired quality from the list and click the OK button.
hth Regards Geoff