The procedure of setting up multi-channel audio speakers in home theater products is fairly tedious and suppliers have invented new products and technologies like wireless surround sound speakers or surround sound wireless headphones recently to help simplify the setup. I will look at the most recent trends to figure out which devices in fact work. I will also give some advice for picking the ideal components.
Most of latest TVs will be installed as a multi-channel audio system. Whereas traditionally TVs would come with built-in stereo speakers, today a number of external loudspeakers are used to let the viewer experience surround sound. The most commonly used 5.1 surround sound format requires installing a total of 6 loudspeakers. These are one center speaker, two front side speakers, two rear speakers and a subwoofer. The more recent 7.1 standard raises this number to 8 by adding two extra side speakers.
Thus setting up a home theater has turn out to be quite difficult and long speaker wire runs are often undesirable for aesthetic reasons. Vendors have recently introduced new devices and technologies. These devices were created to help simplify the installation of home theater products.
One approach is minimizing the quantity of speakers by making virtual speakers. This technique applies signal processing to the sound and adds phase shifts and cues to the sound that would usually be sent through the remote speaker. The signal processing is engineered based on how the human hearing determines the location of a sound. The sound signal is then sent through the front speakers. Due to the signal processing, the viewer is tricked into believing the sound is originating from virtual remote surround speakers.
Another approach for simplifying home theater installations and eliminating long speaker cord runs is to make use of wireless surround sound products or wireless speakers. A wireless solution will usually include a transmitter module that connects to the TV or source in addition to wireless amplifiers that will be connected to the remote speakers. Normally the transmitter part will come with amplified speaker inputs and line-level inputs. This offers flexibility to connect to any type of source. A transmitter volume control helps maximize the dynamic range and avoids clipping of the audio within the transmitter.
Some wireless speaker systems are designed to connect 2 loudspeakers per wireless amplifier. A better option would provide a wireless amplifier for every remote speaker to avoid the cable runs between each of the 2 remote speakers. The most basic wireless products utilize FM broadcast. FM broadcast is prone to noise and sound distortion. More advanced devices make use of digital audio transmission to perfectly maintain the original audio. Ensure that you select a wireless system with a low audio latency, at most a few milliseconds. This will make certain that the audio from all speakers, including the non-wireless speakers, is in sync. Low latency is also important for good sync with the video. If the latency is larger than 10 ms then there will be an echo effect which will deteriorate the surround sound. Some wireless systems work at 5.8 GHz which offers the benefit of less competition from other wireless products than systems using the crowded 900 MHz or 2.4 GHz frequency band.
An alternative method, which is often called sound bars utilizes side-reflecting speakers. The audio that would ordinarily be sent by the remote loudspeakers is instead sent by speakers at the front. These front speakers broadcast the audio 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. This option works best in a square room with minimal interior design and obstacles. It will not function well in a lot of real-world scenarios with diverse room shapes though.
Most of latest TVs will be installed as a multi-channel audio system. Whereas traditionally TVs would come with built-in stereo speakers, today a number of external loudspeakers are used to let the viewer experience surround sound. The most commonly used 5.1 surround sound format requires installing a total of 6 loudspeakers. These are one center speaker, two front side speakers, two rear speakers and a subwoofer. The more recent 7.1 standard raises this number to 8 by adding two extra side speakers.
Thus setting up a home theater has turn out to be quite difficult and long speaker wire runs are often undesirable for aesthetic reasons. Vendors have recently introduced new devices and technologies. These devices were created to help simplify the installation of home theater products.
One approach is minimizing the quantity of speakers by making virtual speakers. This technique applies signal processing to the sound and adds phase shifts and cues to the sound that would usually be sent through the remote speaker. The signal processing is engineered based on how the human hearing determines the location of a sound. The sound signal is then sent through the front speakers. Due to the signal processing, the viewer is tricked into believing the sound is originating from virtual remote surround speakers.
Another approach for simplifying home theater installations and eliminating long speaker cord runs is to make use of wireless surround sound products or wireless speakers. A wireless solution will usually include a transmitter module that connects to the TV or source in addition to wireless amplifiers that will be connected to the remote speakers. Normally the transmitter part will come with amplified speaker inputs and line-level inputs. This offers flexibility to connect to any type of source. A transmitter volume control helps maximize the dynamic range and avoids clipping of the audio within the transmitter.
Some wireless speaker systems are designed to connect 2 loudspeakers per wireless amplifier. A better option would provide a wireless amplifier for every remote speaker to avoid the cable runs between each of the 2 remote speakers. The most basic wireless products utilize FM broadcast. FM broadcast is prone to noise and sound distortion. More advanced devices make use of digital audio transmission to perfectly maintain the original audio. Ensure that you select a wireless system with a low audio latency, at most a few milliseconds. This will make certain that the audio from all speakers, including the non-wireless speakers, is in sync. Low latency is also important for good sync with the video. If the latency is larger than 10 ms then there will be an echo effect which will deteriorate the surround sound. Some wireless systems work at 5.8 GHz which offers the benefit of less competition from other wireless products than systems using the crowded 900 MHz or 2.4 GHz frequency band.
An alternative method, which is often called sound bars utilizes side-reflecting speakers. The audio that would ordinarily be sent by the remote loudspeakers is instead sent by speakers at the front. These front speakers broadcast the audio 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. This option works best in a square room with minimal interior design and obstacles. It will not function well in a lot of real-world scenarios with diverse room shapes though.
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