An Overview Of Wireless Surround Models
by Martina Swagger
The process of installing multi-channel audio speakers in home theater products is quite tedious and suppliers have invented new products and technologies such as wireless surround sound speakers or surround sound wireless headphones lately to help simplify the installation. I will review the newest trends to determine which devices actually work. I will also give some advice for choosing the best components. Historically, setting up a TV would be speedy because they would already come with built-in stereo speakers. This, though, has all changed with multi-channel audio. Today external speakers are utilized to create a surround sound effect. The most commonly used 5.1 surround sound format requires setting up a total of 6 loudspeakers. These are one center speaker, two front side speakers, two rear speakers and a subwoofer. The newer 7.1 standard raises this number to 8 by adding two extra side speakers.
As in the past setting up a TV has been pretty easy, the appearance of multi-channel audio has made setting up home theater systems a great deal more challenging by requiring a number of external speakers to create surround sound. As the traditional 5.1 format needs 6 speakers: a front center, two front side speakers, two rear speaker and a subwoofer, the more recent 7.1 format adds two additional side speakers.
The first solution is also known as virtual surround sound. This method will take the audio components which would ordinarily be broadcast by the remote loudspeakers. It then uses signal processing to those components and inserts special cues and phase delays. After that these components are mixed with the front speaker audio. The sound is next sent by the front loudspeakers together with the front speaker audio components. The signal processing is modeled after the human hearing. It uses the knowledge about how the human ear can determine the source of sound. The signal processing has an effect that will trick the listener into assuming that the sound is originating from an alternate position.
Virtual surround eliminates the remote loudspeakers and simplifies the setup and also eliminates long speaker wire runs. On the other hand, it also has a drawback. The shape of each human's ear is somewhat different. Thus everybody processes sound differently. Because the signal processing is based on a standard human ear model, virtual surround will not work equally well for everybody depending on how much the viewer varies from the standard model.
One more option for simplifying home theater setups and avoiding long speaker cord runs is to use wireless surround sound devices or wireless speakers. A wireless solution will generally incorporate a transmitter component that connects to the TV or source as well as wireless amplifiers that will be connected to the remote speakers. This transmitter will normally have line-level and amplified loudspeaker inputs. Ideally it should come with a volume control to adjust it to the audio source.
Some wireless speaker kits are designed to connect 2 speakers per wireless amplifier. A better option would come with a wireless amplifier for each remote loudspeaker to get rid of the cable runs between each of the 2 remote loudspeakers. Entry-level wireless devices use FM transmission or audio compression which will degrade the sound quality to some extent. More advanced wireless products employ uncompressed digital audio transmission. In multi-channel audio products, it is vital to choose a wireless solution with a latency of merely a few milliseconds. This will ensure that the sound of all loudspeakers is in perfect sync. A high latency would lead to an echo effect. This effect would deteriorate the surround effect. A number of wireless devices operate at 5.8 GHz which offers the advantage of less competition from other wireless products than products utilizing the crowded 900 MHz or 2.4 GHz frequency band.
A third technology uses side-reflecting speakers. This option is named sound bars. The audio that would normally be broadcast by the remote speakers is instead broadcast by loudspeakers at the front. These front speakers broadcast the sound at an angle. Then the audio is reflected by the side and rear walls and appears to be coming from besides or behind the viewer. The effect largely is dependent upon the shape of the room and interior design and not work well in a lot of real-world scenarios as a result of different room shapes and obstacles in the room.
Head to this <a href="http://www.amphony.com/products/wireless-surround-sound.htm">web site</a> in order to find further infos about rear wireless speakers.
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New Unique Article!
Title: An Overview Of Wireless Surround Models
Author: Martina Swagger
Email: sales@amphony.com
Keywords: speakers,internet,computers,hardware,music,tv set,radio,technology,shopping,product reviews
Word Count: 713
Category: Music
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