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34 © 2008 VBrick Systems, Inc.
Bit Rate and Sample Frequency
The following are the allowed combinations of Bit Rate and Sample Frequency when Audio
Channels is
Stereo or Mono (left only) or Mono (L+R).
Table 11. Audio Channels: Stereo/Mono †
Sample Frequency See Bit Rate and Sample Frequency
for all settings. Frequency at which
the audio is sampled at the encoder. Range 8–48 KHz. Shown for
Audio Rate1 only. Audio Rates2 and 3 share this common value. If
Audio Rate2 or Audio Rate3 s enabled, the Sample Frequency is
automatically set to 44.1 KHz.
Audio Rate2 Use to configure multiple bit rates. Check
Enabled to display
configuration settings for Audio Rate2. Once enabled, AudioRate2 and
AudioRate3 are available for selection on the Multicast, Server, and
Archiver pages. If selected on those pages, an error will display if you
attempt to disable them on this page.
Audio Rate3 Use to configure multiple bit rates. Check
Enabled to display
configuration settings for Audio Rate3.
Stereo Mono
Bit Rate (bits/sec) Sample Frequency (KHz) Bit Rate (bits/sec) Sample Frequency (KHz)
192000 48 48000 44.1
192000 44.1 32000 44.1
160000 48 20000 32
160000 44.1 20000 22.05
128000 48 16000 22.05
128000 44.1 16000 16
96000 44.1 12000 16
80000 44.1 10000 16
64000 44.1 10000 11.025
48000 44.1 8000 11.025
48000 32 8000 8
40000 32 6000 8
32000 44.1 5000 8