What is PCM?

[moves]

I put in my PS3 Call of Duty game and it sending a Dolby feed but my pioneer Elite sc 27 reciever is displaying PCM?And yes my playstation is set to send out all the new audio codecs through the HDMI cable.

I think it's a simple question but I don't have a clue.

 

[sptrout]

Pulse Code Modualtion. Here is a link to a great write-up on digital audio including PCM: http://forum.blu-ray.com/audio-theory-discussion/41820-guide-home-theater-audio-codecs-8.html#post702277

 

[moves]

Pulse Code Modualtion. Here is a link to a great write-up on digital audio including PCM: http://forum.blu-ray.com/audio-theory-discussion/41820-guide-home-theater-audio-codecs-8.html#post702277

Is is wrong that my receiver is displaying PCM and not Dolbt Digital?

 

[Nugu]

Wrong? No, Dolby converted to PCM in the PS3 remains unchanged quality wise.

Fat PS3 = PCM output via HDMI
Slim PS3 = New HDMI chipset = Bitstreaming enabled

 

[moves]

Wrong? No, Dolby converted to PCM in the PS3 remains unchanged quality wise.

Fat PS3 = PCM output via HDMI
Slim PS3 = New HDMI chipset = Bitstreaming enabled

why wouldn't the receiver just display Doldy Digital or whatever the format is instead of PCM?

 

[MDS]

why wouldn't the receiver just display Doldy Digital or whatever the format is instead of PCM?

Because the PS3 (the older 'fat' one from what I've heard) does not support bitstream output (ie sending the bits untouched for decoding by another device, like the receiver).

So the PS3 does the decoding and turns it into multi-channel PCM. It is still the same as the original, it's just that the PS3 did the decoding instead of the receiver. The receiver doesn't know what the original format was because it just sees multi-channel PCM and indicates so on its display.

 

[yepimonfire]

keep in mind your receiver will end up converting everything to PCM if you did use bitstream, PCM is raw digital audio data, the stuff that ends up going to the DAC. as long as you are getting the proper amount of channels (5.1/6.1/7.1 etc) it is no different. also you should be able to get DD on a ps3, mine outputs DD on all DD games. its not a slim.

 

[moves]

keep in mind your receiver will end up converting everything to PCM if you did use bitstream, PCM is raw digital audio data, the stuff that ends up going to the DAC. as long as you are getting the proper amount of channels (5.1/6.1/7.1 etc) it is no different. also you should be able to get DD on a ps3, mine outputs DD on all DD games. its not a slim.

I have a slim... maybe I'll try changing the setting to the other setting... i forget what it's called sorry.

 

[moves]

Because the PS3 (the older 'fat' one from what I've heard) does not support bitstream output (ie sending the bits untouched for decoding by another device, like the receiver).

So the PS3 does the decoding and turns it into multi-channel PCM. It is still the same as the original, it's just that the PS3 did the decoding instead of the receiver. The receiver doesn't know what the original format was because it just sees multi-channel PCM and indicates so on its display.

nice explanation

 

[Brookstone]

Nice explanation!