Guide on Mp3 Media Players Stuff

Multi-channel audio has become mainstream and manufacturers have created many types of basic and more sophisticated technologies such as wireless surround sound speakers, virtual surround sound to simplify the setup of home theater kits. I am going to take a look at a number of of the latest technologies that were developed to make setting up home theater systems a breeze. I will illustrate what to look out for when making your buying decision.

The majority of latest TVs will be set up as a multi-channel audio system. As historically TVs would contain built-in stereo loudspeakers, nowadays a number of external speakers are used to allow the viewer experience surround sound. The most commonly used 5.1 surround sound format requires setting up a total of 6 speakers. These are one center speaker, two front side speakers, two rear speakers and a subwoofer. The more recent 7.1 standard increases this number to 8 by adding two additional side speakers.

Thus the installation of home theater systems has become a relatively complicated procedure. Numerous houses are not pre-wired for surround sound. Furthermore, long speaker cables are often unattractive. Component vendors have created a number of technologies to simplify the setup.

The first option is referred to as virtual surround sound. This method will take the audio components which would ordinarily be sent 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 sound. Since the signal processing is based on how the human hearing detects the origin of audio, the sound components which underwent signal processing can be mixed with the front speaker components and sent by the front speakers. Because of the signal processing, the viewer is tricked into thinking the sound is coming from virtual remote surround loudspeakers.

This technology reduces the number of needed speakers and eliminates long speaker cords but every person will process sound slightly differently because of the form of the ear. The signal processing is based on measurements which are done using a standard human ear model. If the shape of the ear changes, sound will travel differently. Consequently virtual surround will not work equally well for each person.

A different solution for simplifying home theater setups and eliminating long speaker wire runs is to utilize wireless surround sound devices or wireless loudspeakers. A wireless solution will normally incorporate a transmitter module that connects to the TV or source in addition to wireless amplifiers that will be connected to the remote speakers. This transmitter will usually come with line-level in addition to amplified speaker inputs. Ideally it should have a volume control to adjust it to the audio source.

Whilst some wireless speaker kits have a wireless amplifier that connects to two speakers, other devices offer separate wireless amplifiers for every speaker. Entry-level wireless products utilize FM transmission or audio compression that will degrade the audio quality to some extent. More advanced wireless devices employ uncompressed digital audio transmission. To ensure that all loudspeakers are in sync in a multi-channel application, make certain that you choose a wireless system which has an audio latency of just a few milliseconds at most. A high latency would lead to an echo effect. This effect would degrade the surround effect. Many wireless devices work in the 900 MHz and 2.4 GHz frequency bands. Some products use the less crowded 5.8 GHz frequency band and as a result have less competition from other wireless devices.

A different method, which is often named sound bars uses side-reflecting speakers. The sound that would normally be sent by the remote speakers is instead broadcast by speakers at the front. These front loudspeakers send the sound at an angle. Then the sound is reflected by the side and rear walls and appears to be coming from besides or behind the viewer. The effect by and large is determined by the shape of the room and interior design and not work well in many real-world scenarios because of different room shapes and obstacles in the room.