11.10 Configure the settings relating to audio [Audio]
Click the [Audio] tab on the “Image/Audio” page. (→9.1 How to display the setup menu, 9.2 How to operate the setup menu)
The settings relating to audio can be configured on this page.
Note
Images and audio will not be synchronized. Therefore, images and audio may not always match.
Audio may be interrupted depending on the network environment.
[Audio transmission/reception]
Select "Off" or "Mic input" to determine whether to receive audio data from the camera to the PC.
Off: Does not receive audio data from the camera to the PC.
Mic input: The PC receives audio data from the camera. Audio can be heard with images on the PC. Images and audio will not be synchronized.
Default: Off
Note
“Audio recording” and “Audio detection” only operate when “Mic input” is selected for “Audio transmission/reception”.
[Audio encoding format]
Select the audio reception encoding format from G.726, G.711, AAC-LC and AAC-LC (HIGH QUALITY).
Default: G.726
IMPORTANT
When “AAC-LC (HIGH QUALITY)” is selected, there are limitations about the following function.
“SD memory card” is not available.
“Audio detection” is not available.
HTTPS is not available.
The maximum concurrent access number is limited to 5.
[Audio bit rate]
Select the audio bit rate used to receive audio data.
When G.726 is selected for "Audio encoding format" : 16kbps/ 32kbps
When AAC-LC (HIGH QUALITY) is selected for "Audio encoding format" : 64kbps/ 96kbps/ 128kbps
Default:
When "G.726" is selected : 32kbps
When "AAC-LC (HIGH QUALITY)" is selected : 128kbps
Note
When selecting a smaller value for “Bandwidth control(bit rate)” (→16.1 Configure the network settings [Network]) while putting a priority on the JPEG image transmission, select “16kbps” for “Audio bit rate”.
[Audio bit rate] is unavailable when “G.711” or “AAC-LC” is selected for “Audio encoding format”.
[Mic input volume (Camera to PC)]
Select a volume level on the PC to hear audio transmitted from the camera.
Mic High: The volume level will become high.
Mic Middle: The volume level will become middle.
Mic Low: The volume level will become low.
Default: Mic Middle
Note
These settings are linked with the volume settings of “Audio recording” and “Audio detection”.
[AGC (audio)]
Automatically adjusts the audio reception to a suitable volume. The degree to which the volume is adjusted can be selected from High/Middle/Low.
When "High" is selected, it is easier to hear quiet sounds, but sounds may be heard as noise. If you do not want to hear noise, select "Middle" or "Low".
Default: High
Note
This setting is also applied to the volume for [Audio recording] and [Audio detection].
IMPORTANT
If the [AGC (audio)] setting is changed after configuring [Audio detection], the volume of the sound that is detected with [Audio detection] may change. In this case, make sure to check the [Audio detection] setting.
[Mic input interval (Camera to PC)]
Select an interval for audio reception from the following.
20ms/ 40ms/ 80ms/ 160ms
Default: 40ms
Note
When a shorter interval is selected, the delay time will be shorter. When a longer interval is selected, audio interruption may be diminished even though the delay time will be longer. Select the interval according to the network environment.
“Mic input interval (Camera to PC)” is unavailable when “AAC-LC” or "AAC-LC (HIGH QUALITY)" is selected for “Audio encoding format”.
[Permission level of audio trans./recep.]
Select an access level for audio reception from the following.
1. Level 1 only/ 2. Level 2 or higher/ 3. All users
Default: 3. All users
Note
Refer to Section 15 Configure the settings relating to the authentication [User mng.] for further information about the access level.