Datavideo PTC-300 Instruction Manual page 59

Please see following section for realizing the descriptions for each item for
the Audio option.
Items Descriptions
Audio Switch
This option allows users to turn
on or turn off the input of the
audio source.
Audio Type
This allows users to select the
encoding format of the input
audio. The default audio type is
the AAC format.
Sample Rate
This drop-down menu allows
users to select desired sample
rate for the input audio source.
There are two sample rate
including 44.1K and 48K for
users to select.
Bit Rate
This drop-down menu allows
users to select their desired Bit
Rate.
Input Type
This option allows users to
select the audio signal input
way. Users can input the audio
by external connected MIC or by
LINE IN.
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