Audio Settings - Axis P5532 User Manual

Audio Settings

This section describes how to configure the basic audio settings for the network camera. The audio functionality for each
video stream is enabled under Video & Audio > Video Stream > Audio.
Note:
A multi-connector cable (available from Axis) is required when connecting external audio equipment to
AXIS P5532/AXIS P5534, see Multi-Connector Cable (not included), on page 41.
Audio Channels
Audio mode - The available audio modes are
• Full duplex. Simultaneous two-way audio allowing you to transmit and receive audio (talk and listen) at the same
time.
Note: There is no echo cancellation; if feedback loops appear, try moving the microphone or the speaker.
• Half duplex. Audio can be transmitted in both directions between the network camera and the client computer, but
only in one direction at a time. You must actively transmit/receive sound using the Talk/Listen button available on the
Live View page (see AXIS Media Control viewer toolbar, on page 9). In Push-To-Talk mode, click and hold the button to
speak and release it when finished speaking. In Toggle mode, click once to switch between speaking and listening.
Note: The Talk/Listen button mode is configured from the Audio tab in the AMC control panel (see AXIS Media Con-
trol (AMC), on page 12).
• Simplex - Network Camera speaker only. Audio is transmitted from the client to AXIS P5532/AXIS P5534 and played
by the speaker connected to the camera. To send audio, the Talk and Microphone buttons in the AMC toolbar must
both be enabled. Click either button to stop audio transmission.
Simplex - Network Camera microphone only. Audio captured by the microphone connected to the network camera is
•
transmitted from the camera to one or more clients.
Audio Input
An external microphone or a line source can be connected to the Audio in connector provided by the multi-connector cable
(not included), see page 41. The audio source must be set to Microphone or Line depending on the connected device.
The Enable microphone power option provides DC power for an external microphone. If using a small electret condenser
microphone such as a clip-on microphone or a computer microphone, enable this option.
Note:
To use a high impedance dynamic microphone, do not enable microphone power. 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.
If the sound input is too low or too high, adjust the input gain for the microphone attached to the network camera.
Select the desired audio Encoding format, G711 μ-law, G726 or AAC.
Select the required Sample rate (number of times per second the sound is sampled). The higher the sample rate, the better the
audio quality and the greater the bandwidth required.
Changing the Bit rate changes the audio compression level and hence audio quality. A higher bit rate can improve audio
quality but requires more bandwidth.
The network camera can be configured to trigger an event if the incoming sound level rises above, falls below, or passes the
set Alarm level.
Note:
To receive synchronized video in H.264 and audio, it is recommended that the time settings in the camera and client
computer are synchronized with an NTP Server. This is enabled in the camera under System Options > Date & Time.
Please refer to the help pages for more information.
AXIS P5532/AXIS P5534 - Video & Audio
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