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DTS vs Dolby, DENON and PS3

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Old 01-01-2010, 10:47 PM   #1
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Default DTS vs Dolby, DENON and PS3

I finally got an optical cable for my surround sound and it sounds great but now I find myself reading the back of my blurays to see what sound output it has and I set my denon AVR 1507 to either dolby or dts based on what the bluray box says. does this matter? I think I hear a difference but it might just be in my head haha.
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Old 01-01-2010, 11:03 PM   #2
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I finally got an optical cable for my surround sound and it sounds great but now I find myself reading the back of my blurays to see what sound output it has and I set my denon AVR 1507 to either dolby or dts based on what the bluray box says. does this matter? I think I hear a difference but it might just be in my head haha.
If you are changing something on your Denon and hear a difference, yeah it's in your head. Here's why:

The disc determines what audio codec is output. If there's more than option on the disc (rare with Blu-ray), then you would make the change on the disc audio menu, not the receiver. If you are playing a Dolby track on the disc, no changes on the Denon will turn it into DTS.

What are you changing on your receiver, btw? You should set the input you are using to Auto. The Denon will detect the format of the in-coming signal and employ the appropriate decoder.

To the broader question you asked - there's little or no difference between DD 5.1 and DTS. Both are lossy codecs that use different means of compressing the original PCM. But, they both do an excellent job, especially at the high bit rates used on Blu-ray. DTS tracks tend to play back a bit louder because of a Dolby feature called dialnorm. But, you can adjust for that dfference with the volume knob.
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Old 01-01-2010, 11:40 PM   #3
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ok so i set the sound on the ps3 within the bluray disk? im changing the knob under the volume. it gos from dolby, dts, 5 channel stereo, reg stereo, then a bunch modes like rock, jazz, matrix etc.
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Old 01-02-2010, 12:09 AM   #4
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ok so i set the sound on the ps3 within the bluray disk?
You select the sound rather than set it. Most BDs only have one English language choice - a Dolby or DTS track. But, if there's more than one, you use the disc audio menu to make the selection.

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im changing the knob under the volume. it gos from dolby, dts, 5 channel stereo, reg stereo, then a bunch modes like rock, jazz, matrix etc.
Most of those are DSPs (digital signal processors) that modify the original sound. Most of those DSPs only work on stereo sources. If you are feeding a DD 5.1 or DTS track to your receiver, the DSPs don't do anything. I don't know why Dolby and DTS would show up as choices since they are not DSPs you can select. Maybe they do something when the source is stereo. But, they won't affect a 5.1 source.

Look at your receiver's display to see the format of the incoming audio. It will say Dolby Digital or DTS Surround. Also, there are DD and DTS indicator lights below the display.
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Old 01-02-2010, 11:25 AM   #5
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hmm ill have to look for those next time I watch something. only light ive seen is "digital"
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Old 01-02-2010, 11:36 AM   #6
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hmm ill have to look for those next time I watch something. only light ive seen is "digital"
Make sure your PS3 is set to bitstream, not PCM. With an optical connection and the PCM output setting, the PS3 will produce stereo. If you are not seeing DD and DTS indicators, just digital, your PS3 is likely set to PCM.
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Old 01-02-2010, 09:57 PM   #7
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wow I think it is cause i remember setting pcm cause it set that i shouldnt set to bit stream now im excited to watch something lol.
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Old 01-02-2010, 10:09 PM   #8
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wow I think it is cause i remember setting pcm cause it set that i shouldnt set to bit stream now im excited to watch something lol.
Yes, bitstream will give you DD 5.1 and DTS, much better than the stereo you're likely getting now. Using surround modes has enabled you to produce some sort of 5.1. But, it won't be nearly as good as the discrete 5.1 in the original sound tracks. Enjoy.

btw, PCM is the correct PS3 setting for lossless formats with an HDMI connection. Bitstream is correct with optical.
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Old 01-02-2010, 10:13 PM   #9
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yeah my denon doesnt have hdmi so I had to use optical.
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Old 01-05-2010, 10:06 PM   #10
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thanks alot man that worked! wow what a world of difference haha. I can now tell its really in DOLBY/DTS question would there be a huge difference between this setup and lossless via hdmi?
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Old 01-05-2010, 10:50 PM   #11
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thanks alot man that worked! wow what a world of difference haha. I can now tell its really in DOLBY/DTS question would there be a huge difference between this setup and lossless via hdmi?
You'll get lots of opinions. But, I think not.
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Old 01-06-2010, 12:02 AM   #12
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You'll get lots of opinions. But, I think not.
will an optical to coax converter hinder sound quality at all? Cause my receiver only has 2 optical inputs (which im now using for ps3 and xbox360) and I wanted to hook up my cable box and apple tv (im surround sound addicted now). But the apple tv only has optical out so I was thinking of getting the converter so all 4 components can use the receiver digitally.
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Old 01-06-2010, 04:25 AM   #13
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will an optical to coax converter hinder sound quality at all?
No. It shouldn't affect it all.
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Old 01-16-2010, 08:07 PM   #14
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Hi, I stumbled upon this thread after extensive Internet searches for my issue and this is the closest example of it I could find. I have recently purchased and installed a Denon 1910, which is hooked up to my PS3 and tv via Hdmi lead. I have a 5.1 set-up. When I played Blu ray via ps3 for the first time the Denons display read Stereo and was only playing through the fl and fr speakers as well as the sub. After messing with the surround modes (buttons on front of receiver) I found that the setting 'multi in' produced the best sound, 5.1. My ps3 is set to linear PCM by the way.
I'm just concerned that as I am an AV noob I am missing something especially given the comments on this thread. I recently played 'No Country For Old Men' using this set up and could hear echoes from the shot-gun scene, which blew me away, so I hope I have it correct.
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Old 01-17-2010, 06:23 PM   #15
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On a receiver that does not decode HD audio soundtracks you MUST use PCM output from the PS3 to get the HD audio tracks. In fact, unless you have the new slim remote the older PS3s do not even bitstream the HD audio for the new HD audio capable receiver to decode, so PCM is the only option to hear the HD audio tracks.

So you are all set with how you have it.
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