What is HIFI audio and the difference between HIFI and home theater?

HIFI = high fidelity, audiophile mouth of the HIFI system generally refers to the technical indicators of higher audio equipment, HIFI on the endless. HIFI sound system from the structure can be divided into a one-piece, suit type and combination. One-piece sound system is a variety of functional equipment and speakers assembled in a chassis, can not be disassembled at will, such machines are generally low-grade popularized machines. Suit type audio system is designed by the manufacturer, will be a variety of equipment with a simple set of units can be disassembled between the various units. Audio combination is based on personal preferences to choose a variety of models of equipment, free combination. the difference between HIFI audio and home theater? First, from the definition of the difference?HIFI audio it requires audio equipment in the playback process, the sound signal indicators are not distorted amplification, processing, in order to restore the original appearance of the sound source, the emphasis is on the original flavor, specifically for the enjoyment of music.AV amplifier, as the name implies, A (audio) means audio, audio, V (video) means video, image, so AV amplifier is a convergence of the audio and video two signal processing of the video, audio and video. Audio and video two kinds of signal processing audio-visual amplifier, emphasizing the atmosphere of the sound field, specifically for home theater. Second, the difference in focus? These two types of amplifiers due to the focus of different, determined by its technical indicators, sound field atmosphere, the number of channels, circuit design and other aspects are different. Technical indicators are different: high-fidelity HIFI amplifier technical indicators are mainly output power, harmonic distortion, signal-to-noise ratio, frequency range, rated impedance and damping coefficient, etc., especially emphasizes the harmonic distortion and signal-to-noise ratio, etc.; while the AV amplifier although there are also these technical indicators, but emphasizes the channel isolation, delay time range, a variety of sound field modes (DSP system, THX system, Dolby) and other indicators of parameters. AC-3 system) and other indicators of parameters, in addition to AV amplifier also more about the video part of the indicators. 2. sound field atmosphere is different: HIFI amplifier in the way of sound amplification to high fidelity for the purpose of design, pay attention to the original amplification of the signal from the signal source, mainly used for enjoying music, vocals, etc., the pursuit of the true effect of the sound. AV amplifier on the way to create a sound field for the main purpose of the design, emphasizing the performance of sound orientation, simulating the atmosphere of the listening environment, such as movie theaters, halls, churches, stadiums, studios and so on. 3. The number of different sound channels: HIFI amplifier in the sound is generally two-channel, that is, the amplification of the left and right two channels of the signal, and promote the left and right two groups of speakers, constituting a stereo sound field. AV amplifier, on the other hand, there are 4-9 ways to promote multiple speakers, thus constituting a surround sound field, for example: Dolby AC-3 need 5.1 channels (left, center, right, left surround, right surround, subwoofer). 4. The difference in circuit design from the circuit design or circuit composition, the two amplifiers have a big difference. First of all, high-fidelity HIFI amplifier circuit is relatively simple, less signal processing procedures, just amplification circuits and switching, adjusting the combination of circuits.AV amplifier than the HIFI amplifier more than the decoding circuit and delay, reverb circuit, etc., and is also responsible for amplifying the multi-channel signals, and thus the degree of integration is high, the circuit is complex, the signal processing procedures.