Output: DD TrueHD versus DTS-HD

[gamer2600]

I hooked up my new Pioneer SC-05, which I think sounds great, and was testing various Blus noticing differences between the TrueHD and DTS-HD formats. Is it just me or does the DTS-HD format seem to have a higher output and overall more "balls" for lack of a better word. The TrueHD format at the same volume levels sound good to but are much lower sounding and less in your face.

I was testing some good audio tracks from both too, 300 and Iron Man for the TrueHD and the newer Rambo and Transporter 2 for DTS-HD. I am using a PS3 as my Blu-ray player so I don't know if that has anything to do with it since it is only PCM.

[Suntory_Times]

Originally Posted by gamer2600

I hooked up my new Pioneer SC-05, which I think sounds great, and was testing various Blus noticing differences between the TrueHD and DTS-HD formats. Is it just me or does the DTS-HD format seem to have a higher output and overall more "balls" for lack of a better word. The TrueHD format at the same volume levels sound good to but are much lower sounding and less in your face.

I was testing some good audio tracks from both too, 300 and Iron Man for the TrueHD and the newer Rambo and Transporter 2 for DTS-HD. I am using a PS3 as my Blu-ray player so I don't know if that has anything to do with it since it is only PCM.

The more in you're face sound you're describing sounds like loudness. Which is not a good thing as that is a sign of a flattening of the dynamic range. However, I am no expert when it comes to multichannel systems and these two audio formats. However if i'm correct the DTS-HD channel is compressed unlike the TrueHD format which could lead to this more in your face sound at the expense of the dynamic range.

I was also under the impression that most where somewhat dissapointed with the audio track of Iron Man. Anyway, I hope that helped.

[Blu-Dog]

Originally Posted by Suntory_Times

The more in you're face sound you're describing sound like loudness. Which is not a good thing as that is a sign of a flattening of the dynamic range. However, I am no expert when it comes to multichannel systems and these two audio formats. However if i'm correct the DTS-HD channel is compressed unlike the TrueHD format which could lead to this more in your face sound at the expense of the dynamic range.

I was also under the impression that most where somewhat dissapointed with the audio track of Iron Man. Anyway, I hope that helped.

Iron Man has the worst Dynamic Range Compression (DRC) encoding I've seen yet, as the default Dolby Tru-HD sound. I had to figure out how to disable DRC on my new Sony BDP-550 to even hear it.

Even with it off, I was not overly impressed with Iron Man's audio. I find it hard to believe some people think it's a reference quality disk for audio, but I have no evidence that Dolby is to blame.

[gamer2600]

It's not that I thought that they weren't dynamic, they both sounded great. There was great separation in tracks, I guess I just feel like the TrueHD stuff doesn't have the same output. So yes, I guess I am talking about loudness/volume level.

[gamer2600]

Originally Posted by Blu-Dog

Iron Man has the worst Dynamic Range Compression (DRC) encoding I've seen yet, as the default Dolby Tru-HD sound. I had to figure out how to disable DRC on my new Sony BDP-550 to even hear it.

Even with it off, I was not overly impressed with Iron Man's audio. I find it hard to believe some people think it's a reference quality disk for audio, but I have no evidence that Dolby is to blame.

I don't really use Iron Man as a "reference" disc it was just literally the first Blu I pulled from the shelf that said TrueHD on the back.

[HOME THEATRE ADDICT!]

IMO I prefer the DTS-HD audio over DOLBY TRU-HD. It just sounds better to me. Seems like it has more punch to it.

[Intamin]

A quote from Sir Terrence on the subject, a sound engineer. This is from a thread that was recently closed.

"This whole thread makes me sleepy. I am going to say this again for anyone who might listen. We have carefully compared our masters with both Dts MA lossless and Dolby TrueHD encodes, THERE IS NO DIFFERENCE PERIOD!!!! 12 audio engineers, highly experience engineers with excellent hearing participated in this DBT, and no one could tell the difference between our masters and the codec encoded output.

1. Your rooms are not audio labs. It does not have the acoustical control to make accurate comparisons.

2. Nobody hearing is tested, so how do you account for mismatch frequency responses between your two ears, not to mention level differences.

3. I know of nobody here who has the necessary equipment to level match down below .5db, let alone 1.0db or 1.5db.

4. A Blu-ray disc is a terrible medium to test off of. No soundtrack is mixed or tweaked exactly the same, so comparing different soundtracks in order to get a result is silly enterprise not worth chasing after.

5. Sighted testing is useless as it invites bias.

6. When you examine the waveforms of each of the testing forms, they are all the same. That means there are no audible differences between them.

7. Lossless is lossless. There is no better lossless than the next, unless one is mixed and eq'd more dynamically than the other.

8. We are more subject to hearing biases than we care to admit to. Especially if we know what the source is.

9. How many here have a neutral room that adds no sonic signature to the mix? Nobody. How many here have speakers with a flat broadband frequency response in room? Nobody. If you purchase speakers from most known speaker manufacturers, your speakers are probably not flat even in a anechoic chamber, which makes them unsuitable for testing.

10. Did I say lossless is lossless no matter which codec is involved?"

Here is that thread, https://forum.blu-ray.com/showthread.php?t=64704

Your comment on DTS HD having more output relates to the fact that it is inherently louder. If you correct for volume differences, they are the same.

[Blu-Dog]

Originally Posted by Intamin

Your comment on DTS HD having more output relates to the fact that it is inherently louder. If you correct for volume differences, they are the same.

That's a heck of a qualifier...

[tvine2000]

Originally Posted by Intamin

A quote from Sir Terrence on the subject, a sound engineer. This is from a thread that was recently closed.

"This whole thread makes me sleepy. I am going to say this again for anyone who might listen. We have carefully compared our masters with both Dts MA lossless and Dolby TrueHD encodes, THERE IS NO DIFFERENCE PERIOD!!!! 12 audio engineers, highly experience engineers with excellent hearing participated in this DBT, and no one could tell the difference between our masters and the codec encoded output.

1. Your rooms are not audio labs. It does not have the acoustical control to make accurate comparisons.

2. Nobody hearing is tested, so how do you account for mismatch frequency responses between your two ears, not to mention level differences.

3. I know of nobody here who has the necessary equipment to level match down below .5db, let alone 1.0db or 1.5db.

4. A Blu-ray disc is a terrible medium to test off of. No soundtrack is mixed or tweaked exactly the same, so comparing different soundtracks in order to get a result is silly enterprise not worth chasing after.

5. Sighted testing is useless as it invites bias.

6. When you examine the waveforms of each of the testing forms, they are all the same. That means there are no audible differences between them.

7. Lossless is lossless. There is no better lossless than the next, unless one is mixed and eq'd more dynamically than the other.

8. We are more subject to hearing biases than we care to admit to. Especially if we know what the source is.

9. How many here have a neutral room that adds no sonic signature to the mix? Nobody. How many here have speakers with a flat broadband frequency response in room? Nobody. If you purchase speakers from most known speaker manufacturers, your speakers are probably not flat even in a anechoic chamber, which makes them unsuitable for testing.

10. Did I say lossless is lossless no matter which codec is involved?"

Here is that thread, https://forum.blu-ray.com/showthread.php?t=64704

Your comment on DTS HD having more output relates to the fact that it is inherently louder. If you correct for volume differences, they are the same.

i agree, and this debate goes on from the dd 5.1,dts days on dvd.it was proven then and now there is no difference,except in your head.theres a sound differece between lossless and lossy[dd5.1&ddtruehd]but thats it