Ps3 can bitstream audio?

[saprano]

I think its just the that some receivers have a louder volume than the ps3. i've tested lossy dolby digital, and dts decoding between my ps3 and receiver. now with some movies they sound the same, but with others the AV sounds a bit "louder". but when i adjusted the ps3's volume by +1, then it sounded the same. if i went higher the ps3 sounded "louder" than the receiver. so i think its a volume thing.

[zweet77]

Originally Posted by un4gvn94538

well thats lossy. hd audio is suppose to be bit for bit and if one way of decoding is better than another, then how does that affect the over all bit for bit?

That's the issue I guess I believe I made a mistake in my previous post though it is the dsp's or digital sound processors that handle decoding.Anyways technically it would be the hd audio track that is bit for bit identical to the master recording but that information has to be decoded that is where dsp's come in.So the argument is that some dsp's can do a better job of decoding than others which might be true but i don't know if there has been actual evidence or data to support those claims all I know is I notice a difference

[Slec]

Check out Sir Terrence's thoughts in this sticky on that very subject.

[zweet77]

Originally Posted by saprano

I think its just the that some receivers have a louder volume than the ps3. i've tested lossy dolby digital, and dts decoding between my ps3 and receiver. now with some movies they sound the same, but ith others the AV sounds a bit "louder". but when i adjusted the ps3's volume by +1, then it sounded the same. if i went higher the ps3 sounded "louder than the receiver. so i think its a volume thing.

That makes sense.

[WriteSimply]

Originally Posted by saprano

ps3 sending out LPCM uses the same high end DAC's.

Well technically the PS3 only has stereo DACs. It doesn't have DACs that support 5.1 through 7.1. For the noobies, that's Digital-to-Analog Converter. Converting Dolby TrueHD and DTS HDMA to LPCM and passing it via HDMI to the receiver does not require DACs.

One of the advantages of letting the player decode is that the player's onboard mixer can mix in the sound effects in the menus and interactivity functions of some of the BD titles. If you let the receiver do it, you don't get sound effects as the bitstream is sent untouched.


fuad

[un4gvn94538]

Originally Posted by Slec

Check out Sir Terrence's thoughts in this sticky on that very subject.

ah, yes. i remember that post now.

[BIslander]

If the decoders are working properly, the PCM that results from decoding will be the same regardless of where the decoding takes place. That's true for both lossy and lossless tracks.

[Jorge Cordeiro]

Well at first we didn't knew that ps3 games where all region free...:P sony please make us a surprise xD

There's been something that have been buggin' me for a while...
I mean...If the Track ( any Lossless track ) is bit by bit equal to the master lets say...5.1 DTrueHD track 16bit 48khz, and in the future a new release is made but this time with 24bit 96khz what does this mean? that we did not had the true Hd audio the first time?
And why do some blu ray disks have 2 HD audio if they are said to be the same?
Like 300 with dolby true Hd and pcm....
omg sorry for the SO off topic

[saprano]

Originally Posted by WriteSimply

Well technically the PS3 only has stereo DACs. It doesn't have DACs that support 5.1 through 7.1. For the noobies, that's Digital-to-Analog Converter. Converting Dolby TrueHD and DTS HDMA to LPCM and passing it via HDMI to the receiver does not require DACs.

One of the advantages of letting the player decode is that the player's onboard mixer can mix in the sound effects in the menus and interactivity functions of some of the BD titles. If you let the receiver do it, you don't get sound effects as the bitstream is sent untouched.


fuad

I always thought LPCM uses the DAC's in the receiver?

Why did sony choose stereo DAC's? does it even matter?

[BIslander]

Originally Posted by zweet77

I believe I made a mistake in my previous post though it is the dsp's or digital sound processors that handle decoding.

That's also a mistake. DSPs aren't involved in decoding. Decoders do the decoding. DSPs are used to process PCM. Dolby PLII, DTS Neo:6, and Jazz Club are examples of DSPs.

[BIslander]

Originally Posted by saprano

I always thought LPCM uses the DAC's in the receiver?

Yes, that's correct.

Why did sony choose stereo DAC's? does it even matter?

It's cheaper. That's why the S550 costs more than the S350 and the BD55 costs more than the BD35.

But, lots of people attach their consoles to systems that need analog stereo. So, every player pretty much has to have stereo outputs.

[un4gvn94538]

Originally Posted by BIslander

Yes, that's correct.

It's cheaper. That's why the S550 costs more than the S350 and the BD55 costs more than the BD35.

But, lots of people attach their consoles to systems that need analog stereo. So, every player pretty much has to have stereo outputs.

if you put the specs side by side of the 550 and 350, there are big differences as to the reason why one costs more than the other.

[BIslander]

Originally Posted by un4gvn94538

if you put the specs side by side of the 550 and 350, there are big differences as to the reason why one costs more than the other.

Are you saying that adding multichannel analog outputs adds nothing to the cost of production?

[un4gvn94538]

Originally Posted by BIslander

Are you saying that adding multichannel analog outputs adds nothing to the cost of production?

im saying its more than what you said as to the reason why one costs more than the other. you stated ONE thing and im saying there are MORE than ONE difference

[Slec]

Originally Posted by Jorge Cordeiro

I mean...If the Track ( any Lossless track ) is bit by bit equal to the master lets say...5.1 DTrueHD track 16bit 48khz, and in the future a new release is made but this time with 24bit 96khz what does this mean? that we did not had the true Hd audio the first time?

If something is a bit for bit match of the master, then anything else is not... If something new were released then it would have to be a new mix (which may/may not be possible)

And why do some blu ray disks have 2 HD audio if they are said to be the same?
Like 300 with dolby true Hd and pcm....

When 300 came out, not all players and receivers decoded TrueHD or DTSHD-Ma. As a result, some studios put the uncompressed PCM track on the disk. That practice has since ceased.

I should also add that studios have deals with DTS and Dolby to use these tracks, so occasionally the production company and parent company will differ, thus resulting in both TrueHD and DTSHD-MA on a disk (e.g. Close Encounters, from my understanding)

[saprano]

Deleted, slec answerd your question first.

[zweet77]

Originally Posted by BIslander

That's also a mistake. DSPs aren't involved in decoding. Decoders do the decoding. DSPs are used to process PCM. Dolby PLII, DTS Neo:6, and Jazz Club are examples of DSPs.

Dsp's do handle decoding and sound field processing you are referring to.this can be done with hardware or chips or with software which is the case of the ps3 that's why for example dts-ma decoding was added via firmware.

[saprano]

oh what the hell, the more answers the better

Originally Posted by Jorge Cordeiro

There's been something that have been buggin' me for a while...
I mean...If the Track ( any Lossless track ) is bit by bit equal to the master lets say...5.1 DTrueHD track 16bit 48khz, and in the future a new release is made but this time with 24bit 96khz what does this mean? that we did not had the true Hd audio the first time?

doesn't mean anything seeing how there are no movies recorded at 96khz and probably never will be. its all 48khz. and movies out now use 16bit and 24bit audio. i dont think we can hear above 48khz anyway, somebody correct me if im wrong.

And why do some blu ray disks have 2 HD audio if they are said to be the same?
Like 300 with dolby true Hd and pcm....
omg sorry for the SO off topic

I dont know, well dts and dolby are codecs, companies have deals with them. maby they add PCM as a preference?

[sperezmore]

Originally Posted by un4gvn94538

seeing the logos on your receiver.

Well, my Pioneer Elite VSX-92THX / Panasonic DMP-35K sounds better bitstream than with PCM linear with my PS3

Regards,

[Slec]

Originally Posted by saprano

i dont think we can hear above 48khz anyway, somebody correct me if im wrong.

Human hearing is 20Hz-20kHz (maybe a little above that in some cases) which is why receivers and speakers show frequency responses over this range. When they go outside (say, up to 48kHz) they are showing the quality of performance.