What it means by 5.1 or 7.1 in a home theater system?

Answer 1

With respect to soundtracks, such as those on movies and DVDs, 5.1 means that the soundtracks are recorded with five main channels: left, center, right, left surround, and right surround, plus a low-frequency effects (LFE) bass channel (called a ".1" channel because it covers only a fraction of the frequency range of the main channels).

Some movie soundtracks use a variation on 5.1 called Dolby Digital Surround EX, which has now migrated via DVDs to home theater. This format matrix encodes a third surround channel onto the left and right surround channels of 5.1 soundtracks, and may be decoded or not at the cinema’s or home listener’s option due to their inherent compatibility. Because the extra surround information is carried on the left and right surround channels, Dolby Digital Surround EX encoded soundtracks are still regarded as 5.1 soundtracks.

With respect to home playback, the terms 5.1, 6.1, and 7.1 mean that there are five, six, or seven main speakers, plus a subwoofer, in the playback system. (The subwoofer reproduces the LFE channel recorded on 5.1 soundtracks, plus any bass the main speakers cannot handle.) The difference is in the number of surround speakers: two in a 5.1 system, three in a 6.1 system, and four in a 7.1 system.

Obviously, a 5.1-channel soundtrack can be played on a 5.1-speaker system. But it is not always understood is that it can also be played on a 6.1- or a 7.1-speaker system. To do this, the two surround signals on the 5.1 soundtrack are spread across the three or four surround speakers. This distribution can be accomplished by a Dolby Digital EX decoder, a THX Surround EX decoder, or other proprietary methods provided in home theater equipment by various manufacturers.

So the number (i.e., 5.1) describing the soundtrack does not have to match the number applied to the speaker system. It’'s even possible to play two-channel stereo content over these multi-speaker systems by using a matrix surround decoder such as Dolby Pro Logic II. The delivery format and the speaker configuration are independent, and it is the decoder's job to bridge them effectively.



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Answer 2

5.1 Means 1 Front left Speaker, 1 center chanel.1 Front right speaker, 1 left rear surround, 1 right rear surround they all produce a sound from a reicever with dts or ac3 as each channel deliver unique independent sound when u are watching a movie is a total of 5 speaker plus subwoofer thats the 1 wich means 5.1 on 7.1 they add 2 more speakers at the rear of the surrounds. Any way everybody is with 5.1 not many movies have the 7.1 decode

Answer 3

In 5.1 surround sound; the "5" refers to the front left, front right, center, and two surround speakers, while the ".1" refers to the subwoofer channel. 7.1 contains 2 extra rear speakers, As much channel you have you could feel more effect of sound, how ever remmember, you player having compabiltiy to operate those channels otherwise u need to go for decoders as a extra attachment.
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Answer 4

Dolby sound and THX sounds ,have a method of distributing sound to different speakers when the sound in a movie/clip is encoded trough it.
5.1 channel sound represents that 5 speakers and 1 sub-woofer for bass. Actually its 5+1 but generally its represented as 5.1.
the five spears are front,right front,left front ,and left-right rear speakers ,and a woofer.
7.1 is 7+1 has the same 5.1 setup plus one left and one right speaker to it. that's how it got its name 7+1

Answer 5

5.1 is a 5-speaker home theater sys.

7.1 is a 7-speaker home theater sys with a better sense of that "surround feeling"

the .1 stands for the subwoofer

Answer 6

it means the number of speakers you have plus a center channel (i.e. 5.1 is 2 front speakers, 2 rears, and subwoofer=5, the .1 just means your center channel) so that means 7.1 would be 7 speakers and the center channel

Answer 7

5.1 System
---------------
1. Center Channel
2. Left Channel
3. Right Channel
4. Rear Left Channel
5. Rear Right Channel
(.1) LFE Channel (Low Frequency Channel) The .1 of the System outputted via the Sub woofer

7.1 System
---------------
All of the above plus
6. Rear Center Left Channel
7. Rear Center Right Channel

Answer 8

5.1channel system provides front left, center and right, surround left and right and subwoofer. 6.1channel system adds a rear center channel, and a 7.1channel system provides surround left and right and rear left and right. Following is the typical speaker placement for 5.1, 6.1 and 7.1 channel systems.

Answer 9

Dolby Digital created a system of surround sound using the number of loudspeakers, and the "." representing the amount of subwoofers used in the system.

Answer 10

It means the

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