The Dolby Atmos signal is lossy Atmos/DD+. The Apple TV 4K converts the signal to LPCM with Atmos metadata intact(Dolby MAT) and then sends it out. This uses more bandwidth and different devices will recognize and display it as Dolby TrueHD 10 channels or even as 9CH Dolby MAT 192kHz.
The Apple TV 4K, like Macs using HDMI, is locked at 24/48 always and has no DD+ output option. So, no Atmos metadata output without conversion to LPCM as the Dolby Digital 5.1 option won’t cut it.
小弟係玩開 Head-Fi 嘅，所以就有需要去呢個 post 嘅最後一條 link 搵搵 Dolby 官方提供嘅 DRP：
A thought... I currently use a windows pc with asio4all to aggregate 2 x hdmi outputs together into 2 x 7.1 avrs to run a cheap 5.1.4 setup playing up-remixes, 360RA and Atmos saved as wavpack. I note the NUC has 1xhdmi plus display port (and therefore hdmi with an adapter) via usb-c. This could therefore potentially do the same if Kodi on windows will work with asio. Even better if librelec can output to 2xhdmi using jack, although I don't know if this is possible/where to start.
一名永遠的入門玩家, 對電影, 音樂, 影音等玩意永遠雀躍, 其後為了可以將這個毒海無涯信念推展開去, 故建立了這個毒人唔洗本的影音娛樂資訊平台
發表於 2025-2-6 07:55
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發表於 2025-2-23 11:54
