Do you know the basics of audio

 

Sound refers to a series of electro-acoustic energy conversion equipment (microphones and speakers) and audio electronic equipment, all kinds of sounds or audio signals containing sound information, re-restore to sound, and adjust the sound effect required by the service object.

 

Explanation

Electroacoustic energy conversion equipment: A general term for equipment used to convert electrical energy into sound energy or sound energy into electrical energy.

 

Audio: Refers to the frequency of sound that can be heard by the human ear, with frequency values ranging from 20Hz to 20,000Hz.

 

Audio electrical signal: electrical signal with a frequency value between 20-20000Hz

 

Audio electronic equipment: electronic equipment used to process audio signal

 

Frequency: refers to the number of times an object vibrates in one second, and the unit is hertz (Hz)Key

 

EssenceWork Objectives: Provide sound effects that meet the needs of customers

 

Work content: sound restoration and adjustment

 

Sound restoration: that is, fidelity, and poor restoration is distortion. To achieve this, the selection of low-distortion equipment and the commissioning of the system are carried out.

 

Sound adjustment: that is, tuning, through technical means, the sound that does not meet the requirements of the hearing, adjust it to meet the requirements of the customer.

 

System: The combination of materials, components, equipment and personnel of different functions or properties required to achieve a certain work goal.

 

HIFI: is a system, audio source, amplifier, speaker, cable, listening environment and so on.

Audio source: There are many kinds, but the most common ones are disc players (CD.DVD.BD). Enthusiasts often play LP vinyl, even openers, and a PCHIFI. It is based on a PC as the audio source, and generally plays songs with lossless compression such as APE.

Power amplifiers are commonly used as integrated power amplifiers and split power amplifiers (pre-amp + post-amp). In terms of amplification methods, there are tube power amplifiers (tank machines) and transistor power amplifiers (common power amplifiers), Class D amplified power amplifiers, and so on.

 

Speakers: There are many types of floor-to-ceiling boxes, bookshelf boxes, satellite boxes, and so on. The floor box is generally a 3-way frequency, that is, there are high, medium and low woofers.
The bookshelf box is generally a 2-way frequency, that is, a high and low woofer.
Satellite cabinets are better equipped with full-range speakers and a separate subwoofer body (subwoofer). Different boxes have their own advantages and disadvantages, for example: the floor box is better for the performance of large dynamic scenes.
Bookshelves and boxes are better for vocals, strings, etc. The satellite box is relatively small and suitable for the home. Of course, there are no absolutes in the world, and the advantages and disadvantages are only general.

 

Cable: This is one of the most controversial areas in the HIFI space. The main point of contention is whether and how useful the wire is. All signals are transmitted via wires.

 

Environment: The listening environment is very important. It's not that a good set of equipment sounds good everywhere.

 

Sound is a profound knowledge, you need to take your time to understand, concentrate everyone's wisdom will be more efficient, let yourself become a master.