One sound source (the source of sound), two amplification drivers (using it to drive the sound generating unit) and three sound generating bodies (without it, it is difficult for human ears to hear sound).

Sound source-is the recording and playing body of sound, such as digital sound source. MP3 sound digital file is a recording body. Decompression and decoding is the playing process. Recording and playing basically constitute two conditions of sound source. The same is true for analog audio sources. For example, the concave and convex points on the vinyl disc record the sound information, and the turntable senses the information through the stylus and converts it into sound information through electromagnetism to play it out.

Amplification-in fact, this part is passive, because all the vocal organs that can make the ears feel must have the energy to push the air, and this energy is converted from electric energy, and this amplification part is the source of current. In fact, the current output by the general sound source is very small, which can hardly promote the vocal organs, especially the dynamic sound. The piano sound was not amplified to confirm the mosquito's voice. So amplification definitely exists, but only for the sound generator, which is very embarrassing. When the technology is developed and highly sensitive materials are designed, micro-current can drive the sound generator, and there is basically no need to amplify this link. Of course, it doesn't matter if the ultra-small unit is not enlarged.

Sound generator-the sound perceived by human beings generally cannot spread in a vacuum, and it must have a medium, such as water and air. Sound waves generally produce sound waves that push the medium and need energy conversion. At present, most of the electricity is converted into kinetic energy, such as the unit diaphragm in headphones and speakers. Sound waves generated by vibration can be perceived by human ears.

After these three parts, HIFI audio is of course composed of these three parts! It just requires higher quality, stricter and more complicated subdivision. The English abbreviation HIFI is just a standard word with no actual definition, or a state and pursuit.

In the HIFI world, audio sources are many miscellaneous recording parts, which can be roughly divided into analog and digital. Tape vinyl belongs to analog signals, and CD MP3 belongs to digital recording. There are dozens of CD formats and forms, and then the equipment for playing them is very complicated. Take HIFI world as an example, the highest level CD player can be divided into four, four independent and unified devices, turntable, decoder, independent power supply and clock. It could have been integrated, and a CD player was enough, but this is how HIFI is subdivided to the extreme. A spirit.

In the vernacular, the amplification part is called power amplifier. Of course, the power amplifier is made with the speaker, which is called an active speaker, but the actual power amplifier still exists. In the world of frequency HIFI, amplification can be subdivided into combined amplification, pre-amplification, post-amplification, Singer amplification and so on.

The vocal organs can be divided into head-mounted and open type, and can also be divided into moving coil type and membrane type. According to the principle structure, so I won't mention them one by one.

Audio common sense is a process of practice accumulation, which can not be spread by words alone. I hope you can read more magazines and forums in this field, and what I want to say most is that you should actually play a set of audio, no matter how much you spend, you will make progress with your heart. No accumulation, no gain ~ ~ ~ That's it. This is not a matter of two sentences. You can write hundreds of books to understand. Simply put, forgive me, dear ~