11.13 Configure the settings relating to audio [Audio] (WV-SW559/WV-SP509)
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
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Images and audio will not be synchronized. Therefore, images and audio may not always match.
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Audio may be interrupted depending on the network environment.
[Audio transmission/reception]
Select the communication mode used for audio data transmission/reception between the camera and the PC from the following.
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Off: Does not receive/transmit audio between the camera and the PC. Therefore, the settings and controls relating to audio will be invalidated.
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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.
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Audio output: Audio data from the PC will be transmitted to the camera. Audio can be heard from the speaker connected to the camera.
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Interactive(Half-duplex): Both reception and transmission are available. However, audio data cannot simultaneously be transmitted and received.
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Interactive(Full-duplex): Both reception and transmission are simultaneously available.
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Default: Off
Note
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Howling may be generated depending on usage conditions. If howling is generated, prevent sound generated by the PC from entering the PC microphone.
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When “Multicast” is selected for “Transmission type” on the [JPEG/H.264] tab of the “Image/Audio” page, audio transmission will become unavailable while monitoring H.264 images. To transmit audio from a PC to the camera, click the [JPEG] button on the “Live” page.
[Audio encoding format]
Select the audio encoding format from G.726 and G.711.
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Default: G.726
Note
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The other i-PRO series products do not support “G.711” unless otherwise stated. (As of December, 2011)
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G.711 is available only when “Mic input” is selected for “Audio transmission/reception”.
[Audio bit rate]
Select “16kbps” or “32kbps” for the audio bit rate used to transmit/receive audio data.
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Default: 32kbps
Note
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When selecting a smaller value for “Bandwidth control(bit rate)” (→17.1 Configure the network settings [Network]) while putting a priority on the JPEG image transmission, select “16kbps” for “Audio bit rate”.
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[Audio bit rate] is unavailable when “G.711” 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.
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Mic High: The volume level will become high. This setting will be applied when audio is input to the camera using a microphone.
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Mic Middle: The volume level will become middle. This setting will be applied when audio is input to the camera using a microphone.
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Mic Low: The volume level will become low. This setting will be applied when audio is input to the camera using a microphone.
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Line High: The volume level will become high. This setting will be applied when audio is input to the camera using the Line input.
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Line Middle: The volume level will become middle. This setting will be applied when audio is input to the camera using the Line input.
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Line Low: The volume level will become low. This setting will be applied when audio is input to the camera using the Line input.
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Default: Mic Middle
[Mic input interval (Camera to PC)]
Select an interval for audio reception from the following.
20ms/ 40ms/ 80ms/ 160ms
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Default: 40ms
Note
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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.
[Audio output volume (PC to Camera)]
Select a volume level on the camera to hear audio transmitted from the PC.
High/ Middle/ Low
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Default: Middle
[Audio output interval (PC to Camera)]
Select an interval for audio transmission from the following.
160ms/ 320ms/ 640ms/ 1280ms
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Default: 640ms
Note
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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.
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Audio may temporarily be interrupted and noise may be heard when multiple users are accessing the camera concurrently. It may be possible to diminish the interruption or noise by setting a longer interval for “Audio output interval (PC to Camera)”.
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Audio may sometimes not be heard depending on the network environment.
[Audio output port (PC to Camera)]
Enter the transmission port number (the port number on the camera used to receive audio data transmitted from the PC).
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Available port number: 1024-50000 (Only even numbers are available.)
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Default: 34004
Note
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The transmission port number entered for “Audio output port (PC to Camera)” will be used only when “Unicast port (MANUAL)” is selected for “Transmission type” (→11.3 Configure the settings relating to H.264 images [JPEG/H.264]).
When “Off” is selected for “H.264 transmission” (→11.3 Configure the settings relating to H.264 images [JPEG/H.264]) or when “Unicast port (AUTO)” or “Multicast” is selected for “Transmission type”, it is not necessary to enter the transmission port number.
[Permission level of audio trans./recep.]
Select an access level for audio transmission/reception from the following.
1. Level 1 only/ 2. Level 2 or higher/ 3. All users
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Default: 3. All users
Note
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Refer to Section 15 Configure the settings relating to the authentication [User mng.] for further information about the access level.