Audio, speaker, power amplifier, one-step understanding

Audio, speaker, power amplifier, one-step understanding

The development of science and technology, the progress of the times, and the take-off of the economy have brought earth-shaking changes to human life;

For example, in terms of work, the company will be equipped with a modern conference system for efficient operation and convenient management.

Similarly, conference equipment is also updated with the upgrade of the conference system. When it comes to conference equipment, the first thing you think of is audio!

Because the ubiquitous leader's speech is issued by it! So do you know the sound system?

Can you tell the difference?

In the following we will use these differences

(1) The difference between the three

a. Power amplifier: In layman's terms, it is a power amplifier, which is an electroacoustic device that acts as a power amplifier. It amplifies the audio signal and sends it to the speaker. Only by matching the appropriate power amplifier and speaker can the reproduction ability of the sound be better expressed. This is the function of the power amplifier.

b. Speaker: It is composed of a speaker, a frequency divider, a driver, a sound-absorbing cotton, a box, etc. It is a sound reinforcement device and a direct expression of the conversion of electrical energy into sound energy. The human ear can only subjectively feel it through the sound reinforcement of the speaker. to the sound from the audio system. The speaker is just an indispensable component of the audio system. The function of the speaker is to convert the electrical signal amplified by the power amplifier into sound and transmit it to the human ear. Some speakers are put into the power amplifier unit to become active speakers.

c. Audio: Generally, speakers, power amplifiers, and sound source systems are one system, and speakers are basically just a structure of wooden boxes and speakers. The sound system is a general concept, that is, the speaker sound refers to the entire system equipment, and the speaker refers to the sound box. It is a system that consists of a sound source + amplifier + speaker. Many friends will add a mixer or preamplifier to this system because of the pursuit of effects and easy debugging, and some add other peripheral equipment, such as: equalizer, compressor, feedback suppressor, or audio digital processor. Therefore, audio is more professional and systematic. It can be divided into home audio (civil audio), broadcast audio, and professional audio (special audio system for stage performances, conferences, etc.).

(2) The relationship between the three

Use the example of a horse-drawn cart to visualize the relationship between the three: the horse is the power amplifier, the cart is the speaker, and the horse-drawn cart as a whole is the sound system.

The audio system includes power amplifiers and speakers; the power amplifier drives the speakers to reproduce, restore, and amplify audio signals.