This unit is commonly known as an AV receiver. It is the hub or central point of the home theater system. The Audio-Video receiver is the electronic component that controls and drives input signals and sends them to output devices. And it is being done by several CMOS integrated circuits, micro-controllers present on the circuit board of the AV receiver.
AV receiver of home theater system
The AV receiver performs below assigned tasks:
Connects with your sound and video sources:
Every sound or audio source in your home theater should connect to an AV receiver. Inbuilt pre-amplifiers in this device receive audio signals from the input device and intelligently amplify these signals. Low, medium, and high-frequency signals are processed efficiently to create the surrounding-sound effect in the home theater system.
Video source devices are also connected directly to the AV receiver, which is connected in turn as a display unit. This setup simplifies the selection of video source mode. For example, if you want to play a DVD or show recorded on a PVR or anything else, you just need to select the video mode or adjust the display resolution on the AV receiver by using its remote control.
Decodes surrounding audio signals:
The ability to decode and amplify the digital as well as analog surround-sound signals is a main feature of the AV receiver unit. This property made this unit different from conventional stereo receivers.
Provides user interface for home theater system:
The interface of this unit includes remote control of the receiver, the displays on the receiver’s face, and probably an onscreen display on your television or other visual devices. All these elements enable you to command all the electronic components in your home theater system.