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Newest Accessories Make Building Surround Sound Products A Breeze
The process of installing multi-channel audio speakers in home theater systems is relatively tedious and manufacturers have invented new products and technologies like wireless surround sound speakers or surround sound wireless headphones lately to help simplify the setup. I am going to look at some of the most recent technologies which were designed to make installing home theater systems a breeze. I will point out what to look out for when making your buying decision.
Many of latest TVs will be installed as a multi-channel audio system. Whereas traditionally TVs would contain built-in stereo loudspeakers, today a number of external loudspeakers are used to allow the viewer experience surround sound. In case of 5.1 surround, 6 speakers are utilized: center, left and right front, left and right rear and a subwoofer. More recent 7.1 systems require a total number of 8 loudspeakers by adding 2 extra side speakers.
Therefore, home theater installations have become relatively complicated. Running wires to remote speakers also is often undesirable because of aesthetic reasons. A number of technologies have appeared to simplify this process.
The first method is called virtual surround sound. This approach will take the audio components which would typically be sent by the remote speakers. 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. As the signal processing is based on how the human hearing detects the origin of sound, the sound components which underwent signal processing can be mixed with the front speaker components and broadcast by the front loudspeakers. The viewer is in effect tricked into assuming the sound is coming from a location other than the front speakers.
This technology reduces the number of required loudspeakers and eliminates long speaker wires but each person will process sound somewhat differently due to the shape of the ear. Since the signal processing is based on a standard human ear model, virtual surround will not work equally well for every person dependant upon how much the viewer varies from the standard model.
Wireless surround sound products are one more solution for simplifying home speaker installations and usually come with a transmitter component that connects to the source and also wireless amplifiers which will connect to the remote loudspeakers. Generally the transmitter component will come with amplified loudspeaker inputs and line-level inputs. This offers freedom to connect to each kind of source. A transmitter volume control helps maximize the dynamic range and avoids clipping of the sound inside the transmitter.
A number of wireless speaker products are designed to connect 2 speakers per wireless amplifier. A better solution would have a wireless amplifier for each remote loudspeaker to get rid of the wire runs between each of the 2 remote speakers. The most basic wireless devices employ FM transmission. FM broadcast is susceptible to noise and sound distortion. More advanced systems make use of digital audio transmission to completely maintain the original audio. In multi-channel audio products, it is vital to pick a wireless option with a latency of only several milliseconds. This will make sure that the audio of all speakers is in perfect sync. A large latency would lead to an echo effect. This effect would degrade the surround effect. Many wireless gadgets work in the 900 MHz and 2.4 GHz frequency bands. Some products utilize the less crowded 5.8 GHz frequency band and as a result have less competition from other wireless gadgets.
A third technology employs side-reflecting loudspeakers. This method is referred to as sound bars. In this case the audio for the remote speakers will be sent by individual loudspeakers located at the front at an angle and reflected by walls as to appear to be originating from besides or behind the viewer. This option works best in a square room with minimal interior design and obstacles. It will not work well in many real-world scenarios with diverse room shapes however.
Pyle PHS88 2-Way Speaker DIY Upgrade Kit (Original Design)
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