sound terms and untrues

[jeff_35]

stereo is defined by 2 audio streams/channels/tracks. the energy that runs down these 2 channels is used to move speakers back n forth producing sound.
surround sound is defined by more then 2 streams/channels/tracks
HDMI is the copy guard corporations answer to illegal coping of of greater then 720p. red/blue/green /component can transmit 1080p, but the copy guard made it against the law to use them for anything better then 720p.
SPIFF RCA, fiber-optic, HDMI are used to connect a digital source to a digital receiver. the capabilities of these are very simulator. all of them can transmit 5.1 surround.
the words 2 channel is used for digital and analog. they are not the same. 2 channel analog is just sound for 2 speakers. 2 channel digital converted to analog will have any were from 1 to 7 or more analog channels.
I hope this helps ;ii read to many times someone see 2/2.1 flash on their stereo and freak out thinking its only going to power 2 speakers. its 2 channels of digital that can be converted to many different sound fields

 

[getochkn]

What? If my stereo tells me how many connected inputs it detects, it because that's the number of inputs, regardless of input type.

I don't really get what you're saying.

 

[jeff_35]

you are right on that. its more about buying surround equipment and some of the speakers don't come on. a lot of people have hook up speaker knowledge, ask about fiber optic and are told get HDMI because fiber optic cant 5.1 surround which is a out right lie.

 

[jeff_35]

just remember its talking digital, and sometimes it says analog results. my computer is punting out Dolby digital 2/2.1. in base setting it is just good sounding stereo. if i change thecomputer Dolby setting to surround, then the 2/2.1 is now using 5 speakers and a sub. nothing at the receiver changed. the encoded digital single was changed 4 analog chanals were added to the original 2 and then encoded into 2/2.1 digital.

 

[ssddx]

i'm not sure if you are confused about terminology, having a hard time getting your thoughts into words or misinformed about some technology but what you say generally makes no sense at all and has us all scratching our heads trying to figure out what you mean or are trying to say.

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if you have a stereo signal in (yes even DIGITAL 2channel is still LEFT and RIGHT only just as analog is left and right only) then you will only ever have stereo sound. now there are ways to FAKE surround sound from a stereo input (such as dolby pro logic) however it is not the same as true surround. you do not want to forget that there is a difference between fake and real surround.

the ONLY way to get true surround sound out of your speaker system is to have a multi-channel (5.1/6ch for example) input. now, this could be done on hdmi ideally but also on optical. however, in the case of optical the bandwidth is not great enough to support anything but compressed audio while hdmi is capable of uncompressed as well as not all devices supporting surround sound via optical which makes hdmi overall the better way to go if possible.

as for stereo 2.0 vs 2.1, in such cases the subwoofer signal is pulled from the L/R channels so there really is no difference.

 

[jeff_35]

HDMI pin out. notice that its twisted pairs. and also notice the lack of 6 or 8 pairs for audio. HDMI may be a better choice for video, but it has no advantage over optical other then the convince of plug and play, and all is done with one cable.

Pins 1 through 9 carry the three TMDS data channels (Transition Minimized Differential Signaling – the technology that allows DVI and HDMI to send high-speed digital data), three pins per channel. TMDS data includes both video and audio information, and each channel has three separate lines for + values, - values, and a ground or data shield.

Pins 10 through 12 carry data for the TMDS clock channel, which helps keep the signals in synchronization. As with the TMDS data channels, there are separate lines for + values, - values, and a data shield.

Pin 13 is carries the CEC (Consumer Electronics Control) channel, used for sending command and control data between connected devices.

Pin 14 is reserved for future use.

Pins 15 and 16 are dedicated to the DDC (Display Data Channel), used for communicating EDID (Extended Display Identification Channel) information between devices.

Pin 17 is a data shield for the CEC and DDC channels.

Pin 18 carries a low-voltage (+5V) power supply.

Pin 19 is the Hot Plug Detect, dedicated to monitoring power up/down and plug/unplug events.

 

[getochkn]

^^^ What does that have to do with anything? You copied and pasted HDMI pinout info from a website. I still don't get the point of this post.

 

[ssddx]

your point being what?

regardless of the transfer rate capabilities of the cables, current hardware does not allow more than either stereo audio (the majority of spdif connections are this) or compressed dolby digital sound. hdmi allows up to 192khz 24bit PCM uncompressed audio over 8 channels.

could you make optical transmit the same? perhaps, if the hardware was capable of a high enough transfer rate and if products were designed to accept it. as it stands though its a moot point.

also, hdmi is used for audio and video while optical is only used for audio. could you use the cable to do more? sure, but without hardware, standards and products backing it up its also a moot point.

are you going to make a valid point here or ramble on with incoherent words? so far all i've seen is barely readable mumbo jumbo.

honestly i'm debating whether or not you are confused or if you are trying to troll us here.

 

[jeff_35]

I was waiting for that : PCM is fake surround. PCM was created because DOLBY wanted royalties and computer manufactures turned to ess and realtek for chips that could play sound. Go to a theater and listen. You cant get that kind of sound at home with PCM or HDMI. I'm tired of that fight. Anyone who has a "real" Dolby system knows you either have hear aids or don"t have a clue.

ps. i you can come by, titusvile fl, I'll be happy to demonstrate my belief.