How does the HIFI sound system make up

Hi-Fi is the abbreviation of English High-Fidelity, literally translated into "high fidelity", which is defined as: replaying voice which is highly similar to the original voice. So what kind of audio equipment replays the voice is Hi-Fi? Up to now, it is still difficult to draw a firm conclusion. With all kinds of instruments, the professionals of the sound field determine the degree of the equipment Hi-Fi by various means, and the sound fancier often judges whether the equipment is in the mind of the Hi-Fi through his own ears. Judging the level of replay of high fidelity, not only the equipment and software with excellent performance, but also a good listening environment. Therefore, how to correctly measure the Hi-Fi level of sound equipment is still different from objective test and subjective evaluation.  line array

Hi-Fi= high fidelity, Hi-Fi system in the mouth of enthusiasts generally refers to the technical indicators of higher audio equipment. There is no end to Hi-Fi.

So how does the HIFI sound system make up?

The Hi-Fi audio system can be divided into one body, suit type and combination type. The integrated sound system is to assemble all kinds of functional equipment and loudspeakers in a box, which can not be dismantled at will, and this kind of machine is generally low-grade universal machine. The set type audio system is designed by the manufacturer and equipped with all kinds of equipment sheets. Sound combination is based on personal preferences to choose various types of equipment, for free combination.

The audio system is mainly composed of auditory system (human ear), hardware system (equipment), software system (signal source) and listening environment.

It refers to the equipment that converts the magnetic signals or digital signals into the electrical signals in the source software. It mainly includes DVD, S-VCD, VCD, CD, tuner, card seat and high fidelity video recorder, etc.

The power amplifier mainly amplifies the weak signal input by the sound source equipment, and generates enough large current to drive the loudspeaker to reproduce the sound.

The sound box is the throat of a set of sound equipment. The final sound of the sound source software depends on the sound box. The good and bad sound of the sound equipment depends entirely on the sound box, so the sound box plays an important role in the sound equipment.

What are the main technical indicators of the sound system?

The main technical indicators of the audio system are frequency characteristics, signal to noise ratio, dynamic range, transient response, stereo separation and stereo balance.

Frequency characteristics: the frequency range (frequency response) of audio equipment during playback and the relationship between signal amplitude and frequency (amplitude frequency characteristic). The unit of amplitude is dB, and the unit of frequency is Hz. The frequency response of the audio system is at least 32-18000Hz, and the amplitude of the signal should be less than 2dB in this frequency range.

Signal-to-noise ratio: the logarithm of the ratio of useful signals to noise at the same reference point. At the speaker input point, the signal to noise ratio 70dB, the human ear distance from the loudspeaker box is almost audible, and the Hi-Fi system generally reaches more than 100dB.

Dynamic range: the ratio of the maximum non distortion output power to the static output power of the system when the audio equipment is replayed. The Hi-Fi system generally reaches more than 100dB.

Distortion: the distortion of the source signal when the audio device is replayed. There are harmonic distortion, cross modulation distortion and transient distortion. The harmonic distortion of the Hi-Fi system is generally less than 1%.

Stereo separation: the separation of the left and right two channels. The degree of crosstalk between the left and right two channels is reflected.

Stereo balance: the difference of signal gain between the left and right two channels.

What are the commonly used terms for a sound fancier?

There are more commonly used jargon in audio enthusiasts.

Nerve line: a signal line of low level and small current.

Fever line: large section and large number of speakers.

Boiler: a short time to complete the running in period of equipment (process).

Copying machine: Modify, the transformation process of sound equipment.

Biliary machine: electronic tube amplifier.

Stone machine: transistor amplifier.

Cholelithiasis machine: electronic tube and transistor hybrid power amplifier.

Ring cow: loop transformer. The magnetic leakage of the ring cattle is smaller.

Large pond: power supply system with capacitance above 10000uF.

Tonic: high-end yuan, device.