Friday, November 14, 2008

High Definition Home Theatre

Today is an exciting time to be a home cinema fan. With the advent of high-definition home video and audio, it is now possible to view films at home that will look and sound at least as good as they did in the cinema. To achieve this, you will need to make sure your home cinema setup meets the requirements of reading, converting and displaying a high-def source.

To begin with, you will need a hi-def source. Many cable and satellite packages offer hi-def channels, but many channels use large amounts of compression to squeeze multiple high-def channels into a limited amount of bandwidth. This causes images to have compression artefacts, such as macro blocking, mosquito noise or banding. Audio can also be affected, with very low or high frequencies clipped and complex parts of the soundtrack sounding "muddy".

The same problem is present on the new "download" services that allow you to download and watch a film for a fixed price. Although less noticeable, the problems of compression are still visible. Lastly, some DVD players will provide "up-scaling" of standard DVD's, and while this can be an improvement on letting your TV upscale the image, it's not a true high-definition signal, and will appear soft and blurred.

The best source for Hi-Definition content is from a Blu-Ray disc, where there is enough space to store the image without introducing noticeable compression artefacts, and to hold completely lossless sound. Look for a player with an internet connection for easy updates to the firmware, or alternatively consider a Sony Playstation 3 console, which is also a very high-quality Blu-Ray player.

With a hi-def system, only one cable, HDMI, is required to transmit both picture and sound. A HDMI cable is a digital connection, so there are fewer problems from noise or interference. Beware overpriced cables; the digital signal means expensive multi-layered insulation is not necessary. Pay no more than you would for good computer DVI cable, on which the HDMI standard is based.

The hi-def signal will first go into your home-cinema amplifier, which will need a HDMI input. The amplifier needs to be capable of decoding the sound formats used by the Blu-Ray disc. The most common formats are Dolby Digital Plus and DTS-HD, these are updates of the formats used on DVD's, and all modern home cinema amps should decode them. Look out for Dolby True HD and DTS-HD Master Audio support, these are new formats for maximum-quality lossless sound, but only the latest or more expensive amps have support for these right now. Lastly you may see LPCM audio tracks. These are lossless and uncompressed, so no decoding is required and all amps can play them.

Your amp should have a HDMI output that will allow you to connect it to your TV or Projector. With the amp handling the audio, the video signal is fed back out and into your display. To properly function your display will need to be "HDCP compliant", HDCP stands for HD "Copy Protection", and only HDMI inputs with the built in HDCP technology can decode HD video. All newer displays have this, but some early TV's and projectors had HDMI sockets that missed out the HDCP chip.

There are several different resolutions that can be called High Definition. 720p and 1080i are used by some TV channels and also hi-def video games. The highest standard is 1080p, and is used by Blu-Ray movies. Most new displays will handle all three formats, but when buying a TV or projector, check the native resolution, the number of physical lines of picture it can display. TV's that only have a native resolution of 720 will be forced to scale a 1080p signal down, which will reduce the picture detail and may introduce artefacts.

About the Author

You can find more information on High Definition Home Theatre, Home Cinema and Projectors at our website.

Monday, September 08, 2008

Getting the Best Sound from Your System with the Right Audio Equipment

Today good sound and picture quality is important to those who like to see and hear things the way that they were intended to be seen and heard. Many of us don't realize how much our sound and picture is being distorted when we use the wrong audio equipment. For this reason, if you want to be sure that you are seeing and hearing things in the very best way, you will want to be sure that you look into Marantz audio equipment as well as all of the high quality cabling that is necessary to bring you the sound and picture that you expect.

Marantz is a name that has been around in the premium home entertainment business since the 1950's. Over the years it has been this name that has been responsible for items such as the Model 7 preamplifier, the Model 9 monoblock, the 2200 receivers, laserdisc players, certified receivers for high quality pictures, and today the Super Audio CD player. Over the years the company has been dedicated to what they refer to as "sonic superiority" and all of their products will offer exactly this to you. Today their receivers can be used to enhance the quality of your most modern technologies such as DLP projection and plasma monitors. Today the company is as dedicated to picture quality as they are to sound quality.

If you buy a Marantz system you will want to make sure that you have the cabling that is necessary to deliver the best sound and picture possible. Most would agree that the proper cabling to use with any Marantz system would have to be Monster HDMI cable. You may have seen Monster cable in the stores and felt shocked by the prices. This is the only way to get the true benefit of a Marantz system because you get the speed necessary to bring you true to life pictures and sound. With Monster Cable you are going to be able to accommodate the need for speed from the Marantz system so you do not get any distortion in your audio or video, if applicable, which will allow you to see and hear things the way they would be seen or heard if you were in a theatre or recording studio.

If you will not settle for anything less than the best than you will definitely want to get one of these quality receivers as well as the Monster cable to go along with it. The combination of the two will bring you the superior sound that you have been looking for that will enhance your favorite sounds whether it is music or television.

About the Author
Caitlina Fuller is a freelance writer.