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AXIS V5915 PTZ Network Camera
Video and Audio
• Simplex – Network Camera speaker only - Audio is transmitted from a client to the Axis product and can be played by
a speaker connected to the product. To transmit audio using the Live View page, the Talk and Microphone on buttons
must both be active, see AMC Audio Controls on page 12.
• Simplex – Network Camera microphone only - Audio captured by the product microphone is transmitted from the
Axis product to one or more clients.
To set the audio mode, go to Video & Audio > Audio Settings and select the desired mode from the Audio mode drop-down list.
Audio Input
Note
If using unbalanced Line in a mono contact must be used. Signal on tip and ground on sleeve.
Select External Microphone to use an external microphone or Line to use a Line in device, e.g. an audio mixer for multiple
microphones or a microphone with a built-in amplier, as audio source.
Note
• When selecting Line the 3.5 mm audio input connector is enabled. To use the XLR connectors for line level input, select
Microphone, set Microphone power to Off, and deselect +30 dB microphone boost.
• When selecting Microphone the XLR audio input connectors are enabled. To use the 3.5 mm connector for microphone
input, set Microphone power to 5.0V.
Select the +30 dB microphone boost option to amplify the signal of the external microphone connected to the Axis product.
Microphone boost option is useful when a microphone's volume is too low and you want to increase it. This option is not available
when the Line source is selected
The Microphone 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.
Use the Input gain to control the volume of the audio input. If the sound is too low, choose a higher dB value, to amplify the
sound. If the sound is too high, choose a lower dB value. The Level bar gives a visual representation 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.
Use the Encoding option to 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 is an unlicensed standard codec that is useful when integrating audio into a VoIP system
• G726 is an unlicensed speech codec that is most commonly used within the security industry.
• Opus is an unlicensed codec that is used for interactive real-time audio transmission over network.
Note
If recording audio to edge storage, such as an SD card or network share, use AAC or Opus encoding.
The Sample rate denes the number of times per second the sound is sampled. A higher sample rate will provide better audio
quality, but also requires a greater bandwidth.
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