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products:sbc:vim3:applications:earc

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products:sbc:vim3:applications:earc [2023/11/08 23:02]
nick 		products:sbc:vim3:applications:earc [2025/05/19 21:40] (current)
reeve
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 ===== Introduction ===== ===== Introduction =====
  
-The eARC is a feature implemented in the latest HDMI 2.1 specification, the biggest advantage is that it exceedingly improves bandwidth and speed.  +eARC is a feature implemented in the latest HDMI 2.1 specification, This allows you to transmit high-quality audio from your TV to your Soundbar or AV receiver and is compatible with the high bitrate formats Dolby Atmos and DTS.
-This allows you to transmit high-quality audio from your TV to your Soundbar or AV receiver and is compatible with the high bitrate formats Dolby Atmos and DTS. +
  
-This documentation is about how to record audio from eARC.+This documentation will guide you how to record audio from the HDMI eARC channel.
  
 <WRAP important > <WRAP important >
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 ===== TV side setup ===== ===== TV side setup =====
  
-In order to use the eARC functuion, you need to make sure your TV supports the eARC function, in generic, if the HDMI port on your TV has a eARC mark,\\ +In order to use the eARC function, you need to make sure your TV is also eARC capable, It is denoted by the eARC label on the HDMI Input.
-it means your TV supports eARC function, anyway you need to check with your TV vendor whether it supports or not.+
  
-You also need to enable the eARC function on your TV if it supports, you can check with the TV vendor about how to enable it.+You can also check with the TV vendor about how to enable it.
  
 ===== VIM3L side setup ===== ===== VIM3L side setup =====
  
-You also need to enable the eARC RX function on VIM3L, you can follow the command below to enable eARC RX.+You also need to enable the eARC Receiver function on VIM3L, you can follow the command below to enable eARC RX.
  
 ```shell ```shell
-amixer cset name='ARC eARC RX enable' 1+$ amixer -c 0 cset name='ARC eARC RX enable' 1
 ``` ```
  
-Check enable status:+Check its status if it's enabled:
  
 ```shell ```shell
-$ amixer cget name='ARC eARC RX enable'+$ amixer -c 0 cget name='ARC eARC RX enable'
 numid=41,iface=MIXER,name='ARC eARC RX enable' numid=41,iface=MIXER,name='ARC eARC RX enable'
   ; type=BOOLEAN,access=rw------,values=1   ; type=BOOLEAN,access=rw------,values=1
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 ===== Hardware connection ===== ===== Hardware connection =====
  
-You need to use a HDMI 2.1 cable to connect VIM3L HDMI port to your TV HDMI IN port with eARC function.+You need to use a HDMI 2.1 cable to connect VIM3L HDMI port to your TV HDMI Input with eARC function.
  
 ===== Check eARC status ===== ===== Check eARC status =====
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 ```shell ```shell
-khadas@Khadas:~$ amixer cget name='eARC_RX attended type'+khadas@Khadas:~$ amixer -c 0 cget name='eARC_RX attended type'
 numid=24,iface=MIXER,name='eARC_RX attended type' numid=24,iface=MIXER,name='eARC_RX attended type'
   ; type=ENUMERATED,access=rw------,values=1,items=3   ; type=ENUMERATED,access=rw------,values=1,items=3
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 ``` ```
  
-  * values=2 - Device work on eARC +^ Value ^ Status ^ 
-  * values=1 - Device work on ARC +|''values=2''| Device work on eARC | 
-  * values=0 - ARC/eARC not connected+|''values=1''| Device work on ARC | 
 +|''values=0''| ARC/eARC not connected |
  
 If your setup is correct, it should be ''values=2'' which means work on eARC. If your setup is correct, it should be ''values=2'' which means work on eARC.
- 
  
 <WRAP tip > <WRAP tip >
-You can also try to unplug/replugin HDMI cable to check.+You can also try to unplug/replug HDMI cable to check.
 </WRAP> </WRAP>
  
Last modified: 2023/11/08 23:02 by nick

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