The settings relating to audio can be configured on this page.
Mic input
[Mic input volume]
Set the audio volume for input into the camera. This setting is reflected in the volume when listening to audio on a PC (mic input to PC), and in the volume during “Audio recording”.
•
Mic High/Mic Middle/Mic Low: Set the volume when audio is input to the camera using a microphone.
•
Line High/Line Middle/Line Low: Set the volume when audio is input to the camera using line input.
[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”. These settings are linked with the volume settings of the “Audio recording”.
[Audio bit rate]
Set the audio compression bit rate.
[G.726(Live)]: 16kbps/32kbps
[G.711(Live)]: 64kbps (cannot be changed)
[AAC-LC(Live/Recording)]: 64kbps/96kbps/128kbps
•
Default:
–
[AAC-LC(Live/Recording)]: 128kbps
Audio transmission/reception
[Audio transmission mode]
Select the communication mode used for audio data transmission/reception between the camera and the PC from the following:
•
Off: Does not receive/transmit audio between the camera and the PC.
•
Mic Input (To PC): PC receives the audio data from the camera. On the PC, the image can be viewed together with the accompanying audio. The image and audio are not synchronized.
•
Audio output(From PC): Transmits audio data from the PC to the camera. Audio can be heard from the speaker connected to the camera.
•
Interactive(Half-duplex): Both reception and transmission are available. However, audio data cannot simultaneously be transmitted and received.
•
Interactive(Full-duplex): Both reception and transmission are simultaneously available.
Note
•
Howling may be generated depending on the usage conditions. Prevent sound generated by the PC from entering the PC microphone.
•
When “Multicast” is selected for “Transmission type” on the [Image] tab of the “Image/Audio” page, audio output will become unavailable while monitoring H.265 or H.264 images. To perform audio output, click the [JPEG] button on the “Live” page.
•
“Audio recording” is not available when “Interactive(Half-duplex)” is selected for “Audio transmission mode”.
[Mic input interval (Camera to PC)]
Select an interval for audio reception from the following.
20ms/ 40ms/ 80ms/ 160ms
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” is selected for “Audio input encoding format”.
[Audio output volume (PC to Camera)]
Select a volume level on the camera to hear audio transmitted from the PC.
High/ Middle/ Low
[Audio output interval (PC to Camera)]:
Select an interval for audio transmission from the following.
160ms/ 320ms/ 640ms/ 1280ms
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.
•
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)”.
•
Audio may sometimes not be heard depending on the network environment.
[Audio output duration]:
Configure the maximum duration for each time audio is outputted.
1min/ 2min/ 3min/ 5min/ 10min/ 20min/ 30min/ 1h
Note
•
Audio output stops when the specified time has passed. To turn the audio transmission function on, click the Audio output button again.
[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).
Available port number: 1024-50000 (Only even numbers are available.)
Note
•
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” (→
[Transmission type]). When “Off” is selected for “Stream transmission” (→
[Stream transmission]) or when “Unicast port (AUTO)” or “Multicast” is selected for “Transmission type”, it is not necessary to enter the transmission port number.
Live page
[Audio input encoding format]
Select the audio input encoding format to be used in the “Live” page from G.726, G.711, or AAC-LC.
Note
•
G.711 is available only when the “Mic Input (To PC)” is selected for “Audio transmission mode”.
•
G.726 is always applied for the audio transmission encoding format.
[Audio volume control mode]
Select the operation method using the volume cursor of the Mic input button on the “Live” page.
•
Adjust PC speaker: Change the volume of the PC in which the “Live” page is opened.
•
Adjust Mic input: Change the mic input volume of the camera.
•
Default: Adjust Mic input