Audio Settings - Axis Q7401 User Manual

Privacy Mask List
The Privacy Mask List shows all the masks that are currently configured in the AXIS Q7401 Video Encoder and if they are
enabled.
Add/Edit Mask
To define a new mask:
1. Click Add and place the box over the desired area to conceal.
2. Choose a color, black, white, gray or red for the box from the drop-down list Privacy mask color
3. Enter a descriptive name in Mask name.
4. Click Save.
To edit a privacy mask, select it and reshape, move or change color as needed.

Audio Settings

This section describes how to configure the basic audio settings for the video encoder.
The audio functionality for all streams is enabled under Video & Audio > Video Stream > Audio.
Audio Channels
Audio mode - The Half duplex mode transmits and receives audio in both directions, but only in one direction at a time. To
speak, press and hold the button (check that the microphone is not muted). To receive audio, release the button.
Note:
The push-to-talk button is configured from AMC (see AXIS Media Control toolbar, on page 8). It is possible to
configure the push-to-talk button so that it toggles between the speaking and listening modes.
When selecting the Simplex - Network Video Encoder speaker only mode, the speaker connected to the video encoder plays
audio, but no audio is transmitted from the video encoder to other web clients. This could be used to provide spoken
instructions to a person seen in the camera. This mode requires you to use the push-to-talk button.
The Simplex - Network Video Encoder microphone only mode transmits audio only from the video encoder to web clients. It
does not receive audio from other web clients. This can be used in remote monitoring, and web attractions, to provide live
audio and video, of a monitored situation.
Audio Input
Audio from an external microphone or a line source can be connected to the Audio in the connector of the video encoder. 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 PC 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. The default value is microphone power enabled. 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 video encoder.
Select the desired audio Encoding format: AAC, G.711 μ-law or G.726.
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.
AXIS Q7401 - Video & Audio settings
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