Axis Communications Home Security System Axis Communications Home Security System User Manual

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AXIS P5544 PTZ Dome Network Camera
Video and Audio
Note
A m ulti-connector cable (available from Axis; Multi-Connector Cable (sold separately)) is required when connecting external
audio equipment to the Axis product.
Source - Select Microphone for an external microphone or Line for a Line in device, e.g. an audio mixer for multiple microphones or
a microphone with a built-in amplifier.
Microphone power - The Enable m icrophone power option provides DC power for an external microphone. Microphone power
should only be used with microphones that have no battery. This setting should not be enabled when using a dynamic or battery
powered microphone. Microphone power will not harm the microphone; if you are uncertain, try switching it off and on. To use a
professional microphone requiring 48V phantom power, you need an external power supply and a balanced-unbalanced converter
(audio transformer) in between.
Input gain - Control the volume (dB Full Scale) of the audio input. If the sound is too low, choose a higher dB, to amplify the
sound. If the sound is too high, choose a lower dB. The Level bar gives a v isual repre sentation of the audio signal level in dB
relative to the full-scale input level.
• Green — the signal is at a good level.
• Yellow — the signal is becoming distorted.
• Red — the signal is distorted.
Encoding - Select digital audio encoding format.
• AAC requires a license for both encoding and decoding. AAC is the least complicated and most widely used codec.
If achieving the best possible audio quality is a priority, AAC is the recommended codec to use. An AAC license
is included in the Axis product.
• G711
• G726
Sample rate - The number of times per second the sound is sampled. A higher sa m ple rate will provide better audio quality, but
also requires a greater bandwidth.
Bit rate - Set the required bit rate depending on the s
elected encoding. A higher bit rate will give better audio quality. A lower bit
rate may have latency or delay, but will require less bandwidth.
For more information about these settings, please see t he online help
.
Audio Output
An external speaker can be connected to the product’s Audio-out connector (a built-in amplifier is required for this). The output can
be connected to another a m
plifier with speakers. A stereo connector must be used for the audio out.
Configure the audio ou
tput settings under Video & Audio > Audio Settings.
Note
A m ulti-connector cable (available from Axis; Multi-Connector Cable (sold separately)) is required when connecting external
audio equipment to the Axis product.
Output gain - Control the volume (dB Full Scale) of the line audio output. If the sound is too low, choose a higher dB. If the
sound is too high, choose a lower dB.
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