Axis 247S Manual de usuario descargar pdf (Pagina 15)

AXIS 247S - Audio

Audio

The AXIS 247S can transmit audio to clients using e.g. an external microphone. See Setup > Audio to access

the audio settings page.

Audio Settings

This section describes how to configure the basic audio settings for the AXIS 247S.

Enable Audio

Enable audio - Check this box to enable audio functionality.

Audio Input

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.

The Enable microphone power option provides DC power for the external microphone. If you use a small

electret condenser microphone such as a clip-on mic or a PC microphone, this option needs to be enabled.

To use a high impedance dynamic microphone, DC power should not be enabled. DC power will not harm the

microphone, but if you are uncertain, try switching it off and on. DC power is enabled by default. To use a

professional microphone requiring 48V phantom power, you need an external power supply and must use a

balanced-unbalanced converter (audio transformer) in between.

If there are problems with the sound input being too low or high, it is possible to adjust the input gain for the

connected microphone.

Select the desired audio Encoding format, AAC, G711, G726.

Depending on the selected encoding, set the desired Bit rate (audio quality). The settings depend on the

available bandwidth and the required audio quality, i.e. a high bit rate setting requires more bandwidth.

Alarm level - Event types in the AXIS 247S can be set to use this level as a trigger. Each individual event type

can be configured to trigger if the sound level rises above or falls below the set value.

The alarm level can be set in the range 0-100%, where 0% is the most sensitive and 100% the least sensitive.

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Axis 247S Manual de usuario Pagina 15