House cinema , also called home theater or home theater , refers to a home entertainment audio-visual system that seeks to reproduce cinema experience and moods using classroom consumer audio and video devices installed in a private backyard or backyard. In the 1980s, home cinema usually consisted of films previously recorded on LaserDisc or VHS tapes; players LaserDisc or VHS; and large cathode ray tube large screen television sets. In the 2000s, technological innovations in sound systems, video player equipment and TV screens and video projectors have transformed the equipment used in home theater settings and enabled home users to experience higher resolution screen images, improved sound quality and components that offer users more options (for example, many more expensive Blu-ray players by 2016 can also "stream" movies and TV shows over the Internet using subscription services like Netflix). The development of an internet-based subscription service means that home-theater users of the 2016 era do not have to go to video rental stores as it usually did in the 1980s and 1990s (however, some movie fans bought their favorite DVD or Blu-ray disc content).
Today, home cinema systems typically use large projection images from video projectors or high-resolution high-definition HDTV systems, movies or other video content on DVDs or high-resolution Blu-ray discs, played on a DVD player or Blu-ray player, with audio coupled with multi-channel power amplifiers and anywhere from two speakers and stereo power amplifiers (for stereo sound) to a 5.1 channel amplifier and five or more surround sound speakers (with surround sound system). Whether home cinema enthusiasts have a stereo set-up or 5.1 channel surround system, they usually use at least one low-frequency subwoofer speaker cabinet to reinforce the low-frequency effects of the movie soundtrack and reproduce the deep pitches of the music soundtrack.
Video Home cinema
Introduction
In the 1950s, home movie play became popular in the United States with middle class and upper class families as Kodak 8 mm film projector equipment became more affordable. The development of a multi-channel audio system and later LaserDisc in the 1980s created a new paradigm for home video, as it allowed movie fans to add better sound and images to their setup. In the mid-1980s to mid-1990s, typical home theaters in the United States would have a LaserDisc or VHS player playing the movie, with the signal fed to a large rear projection television set. Some people use expensive front projectors in dark viewing spaces. During the 1990s, watching movies at VHS at home became a popular leisure activity. Beginning in the late 1990s, and continuing throughout the 2000s, home-theater technology evolved with the development of DVD-Video formats (higher resolution than VHS), Dolby Digital 5.1-channel ("surround sound") audio system, and high-definition television (HDTV), which originally included a thick HDTV Cathode Ray Tube and flat screen. In 2010, affordable wide-screen HDTV TVs, high-resolution video projectors (eg DLP), 3D television technology, and high-resolution Blu-ray Disc (1080p) have ushered in a new era of home theater.
Recent developments
In the 2000s, the term "home cinema" included various systems intended for home screenings. The most basic and economical system can be a DVD player, large-screen high-definition television (SD) large screen with at least 27 inches diagonal screen size (69 cm), and "home theater in the box" cheap surround sound amplifier/speaker system with subwoofer. More expensive home cinema arrangements may include a Blu-ray disc player, a computer home theater (HTPC) PC or a digital media receiver streaming device with a 10-foot user interface, high-definition video projector and projection screen with over 100 -inch (8.3Ã , Ft. 2.5Ã, m) diagonal screen size (or large flat-screen HDTV), and home theater receivers of several hundred watts with five to eleven surround-sound speakers plus one or two powerful subwoofer (s). 3D-TV home cinema uses 3D TV/3D projector and 3D Blu-ray player where viewers wear 3D glasses, enabling them to view 3D content.
The design and layout of the home theater is a personal choice and type of home cinema that can be set by the user depending on the budget and the space available in the house. The minimum set of requirements for home theater is: a large set of televisions or a good quality CRT (no model US sold in the US), LCD, Digital Light Processing (DLP) projector, plasma screen, organic light-emitting diode (OLED), Silicon X-tal Reflective Display (SXRD), Laser TV, rear projection TV, video projector, standard-definition television (SDTV), HDTV or 3D-TV at least 27 inches (69 cm) measured diagonally, AV receiver or pre- amplifiers (surround processors) and combinations of amplifiers that are at least capable of producing stereo sound but preferably 5.1 Dolby Digital and DTS audio channels, and something that plays or broadcasts movies in at least stereo sounds such as VHS HI-FI VCR, LaserDisc player (no model new stand-alone good available; VCR VHS usually bundled in combo deck with DVD player), DVD player, Blu-ray disc player, cable or satellite receiver, video game console, etc. Finally a set of speakers, at least two, is required but is more common anywhere from six to eight with subwoofers for bass or low frequency effects.
The most expensive home theater set-up, which can cost over $ 100,000 (US), and is in the homes of executives, celebrities and high-income professionals, has digital projectors and expensive, large-resolution, high-resolution projection screens and perhaps even space custom-made playback that includes cinema-style seats and audiophile-level sound equipment designed to mimic (or sometimes even exceed) commercial theater performance.
Maps Home cinema
Design
In 2010, many home cinema enthusiasts want to replicate, to the extent possible, the "movie theater experience". To do so, many home cinema enthusiasts buy higher-quality components than those used to watch television daily on relatively small TVs with only built-in speakers. Typical home theater includes the following components:
- Movies or other display content : As the name suggests, one of the main reasons for setting up a home cinema is watching movies on a big screen, doing more effective work on reproducing images filmed from landscapes that broad or a series of epic battles. Starting in 2016, cinema fans at home using the "Smart" Blu-ray player can also watch DVDs of TV shows, and record or run sporting events or music concerts. In addition, with the "Smart" player, users may be able to "stream" movies, TV shows, and other content over the Internet. Many 2016 DVD players and Blu-ray players also have feedback that lets users view digital photos and other content on the big screen.
- Video and audio input devices : One or more video/audio sources. High-resolution movie media formats such as Blu-ray discs are usually preferred, although a DVD console or video game system is also used. Some home theaters include HTPC (Home Theater PC) with media center software applications to act as the main library for video and music content using the 10-foot user interface and remote control. By 2016, some of the more expensive Blu-ray players can "stream" movies and TV shows over the Internet.
- Audio and video processing devices : Input signal is processed by standalone AV receiver or preamplifier and Sound Processor for complex surround sound format such as Dolby Pro-Logic/and or Pro-logic II, X, and Z , Dolby Digital, DTS, Dolby Digital EX, DTS-ES, Dolby Digital Plus, Dolby TrueHD and DTS-HD Master Audio. Users choose inputs (eg, DVDs, Blu-ray players, streaming video, etc.) at this point before being forwarded to the output stage. Some AV receivers allow viewers to use the remote control to select which device or input source to use.
- Audio output : The system consists of preamplifiers, power amplifiers (both can be integrated into one AV receiver) and two or more loudspeakers installed in the speaker enclosure. The audio system requires at least a stereo power amplifier and two speakers, for stereo sound; most systems have multi-channel surround sound speakers and six or more speakers (5.1 surround sound system has left and right front speakers, center speakers, left and right rear speakers and low frequency speaker subwoofers). Some users have 7.1 Surround Sound. It is possible to have up to 11 speakers with an additional subwoofer.
- Video output : Large screen display, usually HDTV. Some users may have 3D TV. By 2015, flatscreen HDTVs are the norm. Options include LCD crystal display television (LCD), plasma TV, OLED. Home cinema users can also use video projectors and movie screens. If the projector is used, a portable temporary screen can be used or the screen can be permanently mounted on the wall.
- Seating and atmosphere : Comfortable seating is often provided to improve the feel of the cinema. Higher home theaters usually have sound insulation to prevent noise from the room and special wall maintenance to balance the sound in the room. Some luxury home theaters have theater-style loveseat for guests.
System vs. component theater-in-a-box
Home theaters can be set up by purchasing individual components one by one (for example, buying multichannel amps from one manufacturer, Blu-ray player from another manufacturer, speakers from other companies, etc.) or by purchasing HTIB (Home) Theater in a Box) package which includes all components from a single manufacturer, with the exception of a TV or projector. HTIB systems typically include DVD or Blu-ray players, surround speakers, five surround speakers, subwoofer cables, cables and remote. The advantage of purchasing separate components one at a time is that consumers can achieve quality improvements in video or audio and better matching between components and specific room requirements, or consumer needs.
However, to purchase individual components, the consumer must have knowledge of the sound system and video and electronic system design and he or she must do research on the specifications of each component. For example, some speakers perform better in smaller rooms while others perform better in larger rooms and seating locations should be considered. One of the challenges of purchasing all the components separately is that the buyer should understand speaker impedance, power handling, and HDMI compatibility and wiring. Given this challenge, the HTIB system is a simpler and more cost-effective solution for many families and consumers, they are also better suited for smaller living spaces in semi-detached homes or apartments/condominiums where noise can be a problem. In addition, buying HTIB packages is often cheaper than buying separate components.
Special rooms
Some home cinema fans built a special room in their home for the theater. These more sophisticated installations often include sophisticated acoustic design elements, including "indoor space" construction that isolates sound and provides better listening environments and large screens, often using high-definition projectors. This installation is often referred to as "play space" to distinguish it from simpler and cheaper installations. In some movie-house movie theaters, this idea can go as far as fully creating a true small-scale cinema, with a closed projector in its own projection booth, special furniture, curtains in front of projection screens, movie posters, or popcorn or vending machines with snacks and candy. More generally, special dedicated home theaters pursue this to a lesser extent.
By 2016, the days of $ 100,000 and more from home theater systems are being seized by the rapid advances in digital audio and video technology, which has driven the rapid price decline, making home cinema set-up more affordable than ever. This in turn has brought a truly digital home theater experience to the do-it-yourselfers doorway, often much less than the low-budget economy car price. Starting in 2016, consumer grade A/V devices can meet several modern small commercial theater standards (eg, THX sounds).
Seating
The home theater seating is made up of specially designed chairs or sofas designed for viewing movies at home theater. Some home theater chairs have cup holders built in arm chair and armrest between the seats. Some seats have cinema-style seats as seen in movie theaters, featuring flip-up seat cushions. Other seating systems have leather-covered leather seats, with flip-out footrests. Available features include storage compartments, snack trays, tactile transducers for low-frequency effects that can be felt through seats (without creating high volume levels that can disrupt other family members), and electric motors to adjust seats. Home theater seating tends to be more comfortable than a seat in a public cinema.
Theater backyard
In homes that have sufficiently sized backyards, it is possible for people to set up home theater in outdoor areas. Depending on the space available, it may just be a temporary version with a folding screen, video projector and multiple speakers, or permanent fixtures with large screens and special audio set-ups installed in weatherproof cabinets. Outdoor cinema is popular with BBQ parties and pool parties. Some outside house cinema specialists are now marketing packages with inflatable film screens and custom made AV systems. Some people have expanded ideas and built mobile drive-in theaters that can play movies in public open spaces. Typically, this requires a powerful projector, laptop or DVD player, outdoor speakers or FM transmitter to broadcast audio to other car radios.
History
1950s-1970s
In the 1950s, home movies became popular in the United States and elsewhere as the Kodak 8 mm film (PathÃÆ'§ 9.5Ã,Ã,mm in France) and camera and projector equipment became affordable. Projected with small and portable film projectors to portable screens, often without sound, this system becomes the first practical home theater. They are usually used to show family travel movies and celebrations, but they are also duplicated as a means to showcase some commercial movies, or even private bachelor movies. A dedicated home cinema is called the screening chamber at the time and is equipped with a 16 mm or even 35mm projector for displaying commercial films. These are found almost exclusively in very rich homes, especially in the film industry.
Portable home theaters are upgraded over time with color films, Kodak Super 8 mm film cartridges, and monaural sounds but remain awkward and somewhat expensive. The advent of home video in the late 1970s almost completely killed the consumer market for 8 mm film cameras and projectors, as VCRs connected to regular television provide a simpler and more flexible substitution.
1980s
The development of multi-channel audio systems and LaserDisc in the 1980s added a new dimension to home cinema. The first known home cinema system was designed, built and installed by Steve J. LaFontaine as a sales tool at Kirshmans furniture store in Metairie, Louisiana in 1974. He built a special sound space that incorporated the earliest quadraphonic audio systems, and he modified the Sony Trinitron Television to project an image. Many systems were sold in the New Orleans area in the following years before the first public demonstration of this integration took place in 1982 at the Consumer Electronics Exhibition in Chicago, Illinois. Peter Tribeman of NAD (USA) organized and presented demonstrations made possible by the collaborative efforts of NAD, Proton, ADS, Lucasfilm and Dolby Labs, who donated their technology to demonstrate what home cinema will be "seen and heard".
For three days, retailers, manufacturers and members of the consumer electronics press were exposed to the first "home-like" experience that combined high-quality video sources with multi-channel surround sound. This one demonstration is credited with being the impetus for developing what is now a multibillion-dollar business.
1990s
In the early to mid-1990s, a typical home cinema will have a LaserDisc or VHS player fed to a large screen: rear projection for more affordable settings, and front projection of LCD or CRT in more complicated systems. In the late 1990s, a new wave of home cinema interest was fueled by the development of DVD-Video, Dolby Digital and 5.1-channel DTS audio, and high-quality front video projectors delivering cinema experience at prices that rival a large-screen HDTV.
2000s
In the 2000s, developments such as high-definition video, Blu-ray disc (and now outdated HD DVD formats, which lost format war to Blu-ray) and newer high definition 3D display technology allowed people to enjoy cinematic feelings in their own homes at a more affordable price. The new lossless audio from Dolby Digital Plus, Dolby TrueHD, DTS-HD High Resolution Audio and DTS-HD Master Audio and speaker systems with more audio channels (such as 6.1, 7.1, 9.1, 9.2, 10.2, and 22.2) are also introduced to feelings which is more cinematic.
2010s
In the mid-2010s, Blu-ray Disc media has become a common home media standard, and online streaming video sources such as Netflix and YouTube offer a variety of high definition content, including some 4K content (although various compression technologies are applied to make this streaming content feasible). The first 4K Blu-ray disc was released in 2016. At this point, 4K TV and computer monitors are experiencing rapid price reductions and increased prevalence, despite the lack of original 4K content. While many DSP systems exist, DTS-HD Master Audio remains the studio standard for soundless surround sound encoding on Blu-ray, with five or seven original discrete channels. High definition video projectors also continue to improve and lower prices, relative to performance.
As a result of continuous price reductions, large TVs (up to 80 '') become financially competitive alternatives for video projectors in the living room or even smaller special room arrangements. Technologies such as local dimming and the like increase the black level of the LCD screen which makes it more suitable for use in dark spaces. Consumer-grade OLED TVs 55 '' and above that began to emerge in the second half of the decade. It has a better black level. However, by 2018, video projectors remain the only viable option when a screen size of over 80 '' is required.
Standard entertainment equipment
Noise Criteria (NC) is a noise level guide that applies to cinema and home cinema. For this application, this is a measure of the ambient noise level of the room at various frequencies. For example, in order for a theater to get THX certification, it must have a sound level of about NC-30 or less. This helps maintain the dynamic range of the system. Some NC levels are:
- NC 40: Significant but not bad ambient noise level; highest ambient noise level "acceptable". 40 decibels is a sound pressure level lower than normal speech; 60 being the highest.
- NC 30: Good NC level; required for THX certification in theaters.
- NC 20: The NC level is amazing; difficult to achieve in large rooms and sought after for a special home cinema system. For example, for a THX certified home cinema, it should have a rating of NC 22.
- NC 10: Criterion of noise that is almost impossible to achieve; 10 decibels is associated with a quiet breathing sound level.
The projector used for home cinema has a set of recommended criteria:
- Brightness, usually at least 1800 lumens.
- Resolution (the number of pixels that make up the image), usually at least 1920ÃÆ'â € "1080, one of the HDTV standards.
- Contrast (how well white, black and greyscal are displayed), usually at least 5000: 1.
- HDMI connection sockets (Although some people use older Video components, connect with three-wire sockets for different individual colors)
- Manufacturers of good quality, though this is a subjective element that depends on the user's appetite and budget. For one user on a modest budget, "good quality" can mean mainstream consumer electronics brands; for good users, Christie projectors may be their interpretation of "good quality" (Christie units are widely used in professional commercial cinema)
See also
- home theater PC
- Media center (disambiguation)
- Media server
References
External links
- The Evolution of Home Theater - Great Small Screen Technology
Source of the article : Wikipedia
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