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<blockquote data-quote="ghanz" data-source="post: 226488" data-attributes="member: 56766"><p>HDMI 1.3 allows for 7.1 channel lossless full rate audio stream. Current spdif standard / protocol is limited by a (don't know number exactly) 500 kbp/s or so for each channel. The new standards Dolby True HD and HD AUDIO / DTS HD need more bandwith (1400 or so kbps each channel or more?). The 'codec' AC3 is physically not able to handle this. HDMI and only 1.3 is able to handle this. The ATI video cards have a header for passthru of audio in the hdmi cable (via DVI converter). If you use ac3 / spdif audio in this hdmi cable, your reciever must be able to 'see' that signal in the hdmi input.</p></blockquote><p></p>
[QUOTE="ghanz, post: 226488, member: 56766"] HDMI 1.3 allows for 7.1 channel lossless full rate audio stream. Current spdif standard / protocol is limited by a (don't know number exactly) 500 kbp/s or so for each channel. The new standards Dolby True HD and HD AUDIO / DTS HD need more bandwith (1400 or so kbps each channel or more?). The 'codec' AC3 is physically not able to handle this. HDMI and only 1.3 is able to handle this. The ATI video cards have a header for passthru of audio in the hdmi cable (via DVI converter). If you use ac3 / spdif audio in this hdmi cable, your reciever must be able to 'see' that signal in the hdmi input. [/QUOTE]
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