Apple Workgroup Server 8550 - Manual (Page 15)

4 Use the sliders to adjust sound output level, sound output balance,
computer speaker volume, and computer speaker balance.
5 To change the selected sound input device, click an item in the Sound
Input pop-up menu.
To use a microphone connected to the sound input port for spoken
commands, select the External Microphone.
The server records sounds in the same way as other Macintosh models: in 16-
bit mono sound, at a sample rate of 44.100 kilohertz (kHz). This makes the
sounds you record compatible with all Macintosh computers. For instruc-
tions on recording a sound, see the “Sound” topic of Macintosh Guide,
available in the Guide (h) menu.
6 If you want to use an external device for sound output, connect it to the
sound output port, as described in the setup guide that came with your
server.
About the sample rate: Most of the time, you will not need to change the
sample rate. You should change the sample rate only if the sound you wish
to play was recorded at a sample rate different from the current setting.
(The available rates are 11.025 kHz, 22.050 kHz, and 44.100 kHz.) For
instance, if you play a QuickTime movie containing sound recorded at
44.100 kHz, set the sample rate in the Sound Output Quality pop-up menu
to 44.100 kHz to hear the full quality of the sound. Increasing the sample
rate slows performance.
m
Do not set the sample rate higher than the sample rate of the sound you
are playing because this slows your server’s performance without
improving sound quality.
m
Do not change the sample rate for sound coming from a device
connected to the sound input port.
If you use a program that provides sound recording in mono format, you
can use its mono setting.
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