Wireless Tuners
Also called AV receivers, wireless tuners are a new type of device that provides a new dimension of ease and comfort to the users who have one TV that receives a subscriber line or uses a subscription service.
The concept can be explained like this: You have already installed a home theater or any entertainment center in the basement of your room. The home theater is equipped with a satellite receiver. Then you buy another TV and install it in your bedroom.
The first option to enjoy the same programs in your bedroom is to connect your new TV with the old one with wires running across your rooms, making holes through your walls—the more expensive option is to seek professional help to install them within the walls.
The second option is to buy another costly satellite receiver to install it on the new TV.
The third and the more convenient and affordable option is to install a wireless tuner or an AV receiver.
AV or audio video receivers are consumer electronic components installed within home theater systems. The main purpose of an AV receiver is to amplify sound and also route the audio-video signals to your TV from different sources. The users can configure and program a unit to receive inputs from various devices such as DVD players, VCRs and so on. They can also select which source they want to route to their TV for their audio and video outputs.
An AV receiver is usually equipped with a tuner, pre-amplifier, a power amplifier and a multi-channel decoder. It also provides for audio and video switching. It may also facilitate video processing such as conversion, deinterlacing and scaling. Some models have networking features and can play music from the internet or music saved on a PC or a media server.
The built-in tuner can provide for Amplitude Modulation (AM) and FM radio reception.
The AV receivers are also equipped with decoders for sources with more than two channels and audio information. They are most useful for movie soundtracks which may have been provided through a number of encoded formats. The first popular format is Dolby Pro Logic which contains a center channel and a surround sound channel. These channels are mixed into the left and right channel with a process known as matrixing. The decoders can separate these two channels.
