https://www.flatpanelshd.com/new ... l&id=1533275502

Sony A9F and Z9F are the first TVs to support HDMI eARC
Sony’s new Master series TVs are the first to feature HDMI eARC, short for enhanced Audio Return Channel, which brings significant benefits in terms of audio support, including Dolby Atmos pass-through.

Enhanced Audio Return Channel
TVs have had the ability to output an audio signal via the HDMI ARC (Audio Return Channel) port for many years. However, the HDMI ARC channel has very limited bandwidth, meaning that it cannot support the latest and greatest audio formats. And often, ARC is even limited to stereo audio.

The new eARC standard promises to fix all of that by increasing audio bandwidth from 2-3 Mb/s, which is best case for ARC, to a 37 Mb/s. That is enough to push through high bitrate and lossless audio (24-bit, Dolby TrueHD etc.). eARC was introduced as part of the HDMI 2.1 standard but as the HDMI Forum confirmed to FlatpanelsHD in January 2018, certain features of HDMI 2.1 can be added to HDMI 2.0 devices via updated firmware.

Sony has confirmed to FlatpanelsHD that the new Master series of TVs, comprising A9F (AF9) OLED and Z9F (ZF9) LCD, will support HDMI eARC, making them the first TV models to do so as far as we are aware.

We asked Sony to shed further light on the matter. In one example, Sony explained how eARC will make it possible for the TV to pass-through Dolby Atmos. What this means is that you can connect an UHD Blu-ray player directly to the TV via HDMI, and then pass-through a Dolby Atmos audio signal (in lossless Dolby TrueHD) to the eARC port from where it can be outputted to a connected soundbar or receiver (needs to support eARC, too). In short, the new Sony TVs will support all of the features that eARC has to offer.


Sony 2018 Master TVs


This is a big step forward for TV audio as it also changes the dynamics of how you can set up your speaker system. A soundbar or receiver no longer has to deal with HDMI inputs and all of the video signals from your external players. Of course, a receiver can still serve as the control central in your system but you are probably familiar with the headache of dealing with 4K, HDR, HLG, and Dolby Vision pass-through in receivers.

To be clear, the speakers in Sony’s new Master TVs are not Dolby Atmos-capable and built-in apps such as Amazon and Netflix do not yet have support for Atmos – like Netflix on LG’s 2017 and 2018 OLED TVs. That may change in the future but Sony had nothing to announce at this event. For now, the main benefit of having eARC in Sony’s new TVs is pass-through.

Also read: Hands-on with Sony A9F and Z9F (AF9 / ZF9)

The new Master TVs will not support any other HDMI 2.1 features, the company said.

eARC is the second feature from the upcoming HDMI 2.1 standard to make it into an HDMI 2.0 based TV. Earlier this year, Samsung implemented HDMI VRR (Variable Refresh Rate) and FreeSync in some of its new TVs.

If you want to learn more about eARC then look out for the upcoming article dedicated to the topic.

附我刚发的贴：近期准备搞家庭影院或者升级功放得朋友注意了，一点建议！
http://club.tgfcer.com/viewthrea ... =%2B%BF%F1%B7%E7007

现在就等eARC的功放大规模上市了。。。。。

引用:

原帖由 patman 于 2018-8-4 10:49 发表
我的天龙是好多年前花8000多买的，现在叫我换肯定不换，使用率太低了。直接oppo203双hdmi侍候，这样估计可以再坚持10年。

的确是这样，如果AV输出机器都是双HDMI输出设计，那么什么eARC都没有存在的必要。
可惜现实并不是这样啊。
首先一个现在使用率最高的安卓盒子和游戏主机都不是双HDMI输出设计。。。。。
其实我觉得PS5应该取消光纤口了，上个时代的东西了，换双HDMI输出多好。。。

引用:

原帖由 木卫一 于 2018-8-4 18:26 发表
posted by wap, platform: iPhone
求科普。这东西到底是干什么用的

家里有功放经常使用5.1环绕的朋友肯定清楚。
简单来说，具有新一代eARC接口的功放兼容性会大大加强，不会受视频格式升级的困扰。
以前什么4K/HDR/HDMI2.1、马上到来的动态HDR以及其他很多升级，每次升级，功放就必须换掉满足新功能，导致玩家刚买没多久的功放就面临不支持新视频格式和功能的尴尬局面。

而功放有了eARC就完全不受视频格式升级的影响，不管视频格式怎么升级都和功放无关了，反正都是电视通过eARC通道回传次时代环绕音效给功放。
这样功放的兼容性和使用寿命就大大增加了，按照官方的说法这是一个惠及十年的设计。

当然这个功能必须电视和功放都有eARC通道才能实现。

引用:

原帖由 坚定的左派 于 2018-8-4 22:03 发表
posted by wap, platform: Samsung
现在电视的HDMI arc和这个有啥区别？回音壁好像都是走这个口的。

ARC是以前的音频回传通道，DVD时代的东西，只支持回传以前的DTS5.1或者杜比5.1，不支持次时代的DTS HD5.1和杜比TRUTH HD5.1，更别说杜比全景声了。

而新一代的eARC(增强型音频回传通道）带宽比以前的ARC大很多，支持回传所有的次时代音频包括杜比全景声和LPCM7.1。

引用:

原帖由 旨旨x 于 2018-8-4 22:00 发表
posted by wap, platform: Nokia
游戏机怎么可能hdmi2，成本极限啊

只是我的希望而已。
你看了我的LG 4K蓝光机评测贴吗，现在1500的蓝光机都是双HDMI输出了，这个成本估计也不是那么贵了吧。