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An audio/video receiver (AVR) is a consumer electronics component used in a home theater. Its purpose is to receive audio and video signals from a number of sources, and to process them and provide power amplifiers to drive loudspeakers and route the video to displays such as a television, monitor or video projector. Inputs may come from a satellite receiver, radio, DVD players, Blu-ray Disc players, VCRs or video game consoles, among others. The AVR source selection and settings such as volume, are typically set by a remote controller. The term "receiver" basically refers to an amplifier, typically at least a two-channel stereo model, that has a built-in radio tuner. With A/V receivers, the basic functionality is to receive an audio signal, amplify the audio signal to drive multiple speakers, and allow pass-through of the corresponding video signal to a display device such as a projector or a television. The receiver performs tasks that would otherwise require numerous separate pieces of equipment, such as preamplifiers, equalizers, multiple power amplifiers, and so on. As home entertainment options expanded in the 1980s and 1990s, so did the role of the receiver. The ability to handle a variety of digital audio signals was added. More amplifiers were added for surround-sound playback. Video switching was added to simplify changing from one device to another, though this role diminished again once TVs began supporting multiples of the same type of input connector. The term audio/video receiver (AVR) or Home Theater Receiver is used to distinguish the multi-channel audio/video receiver (home theater receiver) from the simpler stereo receiver, though the primary function of both is amplification. AV receivers may also be known as digital audio-video receivers or digital media renderers. The AV receiver is classified as an audio frequency electronic amplifier. But with the addition of several features in the 2000s, AV receivers in the 2010s generally have significant additional functionality.

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Concepts associés (5)

Cours associés (1)

Séances de cours associées (13)

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AV receiver

Digital media player

A digital media player (also sometimes known as a streaming device or streaming box) is a type of consumer electronics device designed for the storage, playback, or viewing of digital media content. They are typically designed to be integrated into a home cinema configuration, and attached to a television and/or AV receiver. The term is most synonymous with devices designed primarily for the consumption of content from streaming media services such as internet video, including subscription-based over-the-top content services.

Amplificateur audio

Un amplificateur audio est un amplificateur électronique conçu pour amplifier un signal électrique audio afin d'obtenir une puissance suffisante pour faire fonctionner un haut-parleur situé dans une enceinte acoustique ou un casque audio. La source peut être un dispositif d'enregistrement (console de mixage) ou de reproduction (lecteur CD...). Amplificateur électronique La plupart des amplificateurs fonctionnent « à gain fixe », c’est-à-dire que le rapport d'amplification entre le signal d'entrée et le signal de sortie est constant.

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Conception d'IC analogique de faible puissance: Amplificateurs EE-520: Low-power analog IC design

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