Something I noticed with my Onkyo HT-RC360 - Page 2 - Blu-ray Forum

BIslander · 01-12-2013, 05:41 AM

The expansion happens in the decoder, not later. And, of course, decoders don't tap into the processing capabilities of the host equipment. To do anything beyond channel duplication, the decoder would have to have its own internal DSP.

RocShemp · 01-18-2013, 12:10 PM

Quote:

Originally Posted by BIslander

The expansion happens in the decoder, not later. And, of course, decoders don't tap into the processing capabilities of the host equipment. To do anything beyond channel duplication, the decoder would have to have its own internal DSP.

Is this on all receivers? Or only receivers that don't have DSP's like Neo:X and PLIIz? Because it seems rather pointless to force channel duplication on equipment that has it's own DSP that can matrix the signal ratehr than duplicate the channels.

Wingman1977 · 02-27-2013, 10:32 PM

I only want to mention that it also happens with DTS-HD 6.1 blu-ray titles as well (Top Gun is one example).

Sideways8LV · 03-18-2013, 12:31 PM

Same thing with my Onkyo TX-SR507. If I press display it'll say 7.1 even though only 5.1 is hooked up. Although I think it can support the additional two channels if they were independently amplified.

BIslander · 03-18-2013, 02:12 PM

?? You're saying the receiver outputs 7.1 when you have only configured it for 5.1? That doesn't sound right.

Sideways8LV · 03-18-2013, 02:55 PM

I'll happily take a pic later to confirm. Never really thought much of it until I saw this thread.

BIslander · 03-18-2013, 04:31 PM

I say it sounds wrong because a 7.1 output on a 5.1 system would throw away some of the surround output. The DTS goal is to scale the output to match the playback system's speaker configuration, not to send sound to speakers that don't exist.

Again, just to be sure we're talking about the same thing, this happens when you play a DTS 5.1 source on a system configured as 5.1?

Sent from my HTC6435LVW using Tapatalk 2

Sideways8LV · 03-18-2013, 10:38 PM

I was mistaken. Got home and checked. Display shows 5.1 when playing DD or DTS tracks.

However when nothing is being played the default listening mode is:

PCM MULTICH HDMI

If I hit display once it is:

MCH PCM 7.1

I knew I saw it somewhere.

02-27-2013, 10:32 PM	#23
Wingman1977 Blu-ray Knight Top contributor Member since:Mar 2008 Location:The empire state (NYC) Blu-ray collection:622 PS3 collection:52 Hardware reviews:1 Trading Score:20	I only want to mention that it also happens with DTS-HD 6.1 blu-ray titles as well (Top Gun is one example). Nothing is true, everything is permitted.

03-18-2013, 04:31 PM	#27
BIslander Blu-ray Guru Member since:Sep 2008 Location:Bainbridge Island, WA	I say it sounds wrong because a 7.1 output on a 5.1 system would throw away some of the surround output. The DTS goal is to scale the output to match the playback system's speaker configuration, not to send sound to speakers that don't exist. Again, just to be sure we're talking about the same thing, this happens when you play a DTS 5.1 source on a system configured as 5.1? Sent from my HTC6435LVW using Tapatalk 2 Last edited by BIslander; 03-18-2013 at 04:41 PM.

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01-12-2013, 05:41 AM	#21
BIslander Blu-ray Guru Member since:Sep 2008 Location:Bainbridge Island, WA	The expansion happens in the decoder, not later. And, of course, decoders don't tap into the processing capabilities of the host equipment. To do anything beyond channel duplication, the decoder would have to have its own internal DSP.

03-18-2013, 12:31 PM	#24
Sideways8LV Junior Member Member since:Jan 2013 Location:United Kingdom Home Theater Gallery:9 Blu-ray collection:279 DVD collection:84 Blu-ray reviews:3	Same thing with my Onkyo TX-SR507. If I press display it'll say 7.1 even though only 5.1 is hooked up. Although I think it can support the additional two channels if they were independently amplified.

03-18-2013, 02:12 PM	#25
BIslander Blu-ray Guru Member since:Sep 2008 Location:Bainbridge Island, WA	?? You're saying the receiver outputs 7.1 when you have only configured it for 5.1? That doesn't sound right.

03-18-2013, 02:55 PM	#26
Sideways8LV Junior Member Member since:Jan 2013 Location:United Kingdom Home Theater Gallery:9 Blu-ray collection:279 DVD collection:84 Blu-ray reviews:3	I'll happily take a pic later to confirm. Never really thought much of it until I saw this thread.

03-18-2013, 10:38 PM	#28
Sideways8LV Junior Member Member since:Jan 2013 Location:United Kingdom Home Theater Gallery:9 Blu-ray collection:279 DVD collection:84 Blu-ray reviews:3	I was mistaken. Got home and checked. Display shows 5.1 when playing DD or DTS tracks. However when nothing is being played the default listening mode is: PCM MULTICH HDMI If I hit display once it is: MCH PCM 7.1 I knew I saw it somewhere.