Audio basic knowledge

                                                     Audio Basic Knowledge

What are the benefits of owning a home theater? You can have cinema-level audio-visual enjoyment at home, and you can enjoy the fun of K song with your friends. However, building a home theater is not easy, especially the choice of configuration is the key. When choosing a home theater sound system, many friends are troubled by the professional terms used by the salesperson. Today, let's take a look at the basics of audio that must be known.

1. Speaker

For speakers, people are both familiar and unfamiliar. A speaker is actually a device that restores electrical signals to sound signals. It can be divided into closed, horn, labyrinth, flat, and inverted types according to the principle and structure of sound. Among them, the closed type And phase inversion is more common. Generally, restore authenticity is an important criterion for evaluating speaker performance.

2. The sensitivity of speakers

The sensitivity of a speaker actually refers to the size of the sound that the human ear can subjectively feel. Generally speaking, for every 3dB difference in the sensitivity of the speaker, the output sound pressure will double. When selecting speakers, the increase in sensitivity actually comes at the cost of increasing distortion. Therefore, if you want to ensure the degree of sound reproduction, you must reduce the sensitivity requirements. It should be noted that although sensitivity is an indicator, it has nothing to do with the sound quality of the speakers.

3. Distortion

As a parameter of audio, distortion refers to how much the output signal of the audio changes compared with the original signal after a signal is input to the audio, and it is expressed as a percentage. Distortion is divided into harmonic distortion, intermodulation distortion and transient distortion, which directly affects the restoration of sound quality and tone. The smaller the value, the smaller the distortion.

4. Signal-to-noise ratio

The signal-to-noise ratio is also an indicator of audio, which is directly related to the broadcast quality of the audio. It refers to the ratio of the sound signal and the noise signal played back under the normal working conditions of the audio. Under normal circumstances, the lower the signal-to-noise ratio and the lower the input signal, the more serious the sound is likely to be.

5. Scalability

Scalability is an important indicator when choosing a speaker. So, what exactly is scalability? It refers to whether the speaker can support simultaneous input of multi-channel audio signals, whether there is an output interface for passive surround speakers, whether it supports USB input or other digital input forms. In general, the better the scalability of the audio system, the stronger the adaptability in the future to avoid being eliminated faster.

Choosing the right audio is vital to creating a high-quality home theater, and it needs the attention of every user. Of course, for some friends, it would be difficult to master these or even more basic audio knowledge at once, and the support of professionals is inseparable at this time. Davecl audio insists on honest management, and has a professional team under it to configure a reasonable plan for you to easily create your own home theater.