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Topic # 32825 24-Apr-2009 13:32
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1. How come the speech is only through the left and right channels and not through the centre channel when using the HD channels? When I switch back to the non HD channels the speech returns to the centre channel via my reciever.

2. When will Sky get 5.1 via the HDMI port?

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  Reply # 209027 24-Apr-2009 13:46
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Channels like TV3 transmit full time 5.1 sound. If the show isn't in 5.1 the stereo audio is still transmitted within the 5.1 wrapper which means it will come from the left and right channels only which is the correct way of doing it.

If you are getting audio through your centre channel while watching a channel it's either true 5.1 or you are using sound form of sound processing to force audio through the centre channel. The fact you are getting centre channel audio on a SD channels indicates that this is what is happening. You might be able to force the stereo 5.1 feed to come from the centre channel in a ProLogic II simulation mode but most amps won't do this as it's simply "wrong" and not how the audio is supposed to be heard.

Sky will never get 5.1 via HDMI using their existing generation boes because they can't support it. I'm not aware of any STB's from any major suppliers that do 5.1 via HDMI, while it would be nice it's simply something that isn't supported by the chipsets they use.

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