With the accelerated pace of life, people are now in the era of entertainment. Many people have bought stereos at home and can listen to songs and sing at home, but they don't know what brands of stereos they have and don't know much about them. Next, we will introduce you to the brands and types of modern audio. I hope everyone can refer to it!

Modern audio brand

1 Modern Audio, JBL, (400-630-6678, in the United States 1946, global audio and infotainment product manufacturer, the world's largest professional speaker manufacturer, Harman (China) Investment Co., Ltd.).

2. Modern audio, Hivi hivi, (400-0909- 199, a well-known domestic home theater/audio brand, an internationally renowned Hi-End advanced speaker manufacturer, a leader in electro-acoustic technology, Zhuhai hivi Technology Co., Ltd.).

3. Modern Audio, Yamaha Yamaha, (400-05 1-7700, 1887) was founded in Japan. It started as a high-quality reed organ and is the largest musical instrument manufacturer in the world, specializing in the production of musical instruments/audio equipment/audio-visual products/semiconductor materials. Yamaha Musical Instrument (China) Investment Co., Ltd.).

4. Modern Audio, Philips, (4008-800-008, started in the Netherlands 189 1, a world-renowned multinational electronic brand, a large electronic company focusing on health care/quality life and lighting, Royal Philips of the Netherlands).

5. Modern Audio, Harman Kardon, (400-630-6678, 1953 was founded in the United States, an internationally renowned audio product manufacturer, specializing in R&D/ production/sales of home and car audio, Harman (China) Investment Co., Ltd.).

6. Modern audio, rambler rambler (400-8 10-5526, founded in 1996, a famous trademark in Beijing, a high-tech enterprise with multimedia audio and home audio as its core products, Shenzhen rambler technology co., Ltd.)

7. Modern Audio Sony, (400-8 10-9000, started in Japan 1946, a representative enterprise in Japan, a giant in the field of electronics 3C/ games/finance/entertainment in the world, and a pioneer in portable digital products, Sony Corporation).

8. Modern Audio, Sansui Shanshui Audio, (founded in Japan at 0760-88886978, 1944, with internationally renowned speakers and diversified electronic products and services, Guoguang Electric Co., Ltd., a large audio-visual enterprise with a long history in the world)

2. Types of modern acoustics

1.ClosedEnclosure is the simplest loudspeaker system, which was proposed by Frederick in 1923. It consists of a loudspeaker unit in a fully sealed box, which can completely isolate the forward radiation sound waves from the backward radiation sound waves of the loudspeaker. However, due to the existence of the closed box, the rigidity of the speaker's moving mass is increased, resulting in * * * vibration, which makes the speaker's * * lowest. The sound of the closed speaker is a bit low, but the bass analysis ability is good. In order to get satisfactory bass reproduction, a large box with large volume is needed. The new enclosed loudspeaker takes advantage of the elastic effect of the compressed air mass enclosed in the box. Although the speaker is installed in a small box, the air cushion behind the cone basin will produce a counter-driving force on the cone basin, so this small closed speaker is also called an air cushion speaker.

2.Bass-ReflexEnclosure, also known as AcousticalPhaseInverter, was invented by Thuras in 1930. In its load, there is a sound outlet on a panel of the box, and there are many positions and shapes of the opening, but most of them are also equipped with sound pipes. According to Helmholtz's vibration principle, the relationship between the internal volume of the box and the sound guide hole produces a certain frequency of * * * vibration, which is called the anti-* * vibration frequency. The backward radiation sound wave of the loudspeaker is reversed by the conduit and radiated to the front from the sound outlet, and is superimposed with the forward radiation sound wave of the loudspeaker in phase. It can provide wider bandwidth, higher sensitivity and less distortion than closed speakers. In an ideal state, the lower limit of the low-frequency playback frequency can be as much as 20% lower than the vibration frequency of the speaker. This kind of speaker can reproduce rich bass with a small box, and it is the most widely used type at present.

3. The soundproof enclosure is essentially a variant of the inverted enclosure. The sound-absorbing material or structure is filled in the sound outlet duct as a semi-closed box to control inversion and buffer, so as to reduce the anti-vibration frequency and broaden the bass playing frequency band.

4. The transmission labyrinth closure is named after the transmission line of classical electrical theory. There is a sound pipe made of sound absorption wall behind the speaker, and its length is one quarter or one eighth of the wavelength of low-frequency sound to be raised. Theoretically, it attenuates the sound waves from the back of the cone basin, preventing the sound waves from reflecting to the open end and affecting the sound radiation of the woofer. In fact, however, the transmission line loudspeaker has a slight damping and tuning function, which increases the sound output of the loudspeaker near or below the vibration frequency of * *, and reduces the stroke while enhancing the bass output. Usually, the sound tube of this speaker is folded in a maze, so it is also called a labyrinth or maze.

5.DroneConeEnclosure is a branch of bass reflex loudspeaker, also called empty paper basin loudspeaker. Published by Olson and Preston in 1954. Its opening and sound outlet are replaced by an empty paper basin (passive basin) without magnetic circuit and voice coil. The radiated sound generated by the vibration of the passive cone is in phase with the forward radiated sound of the loudspeaker. The composite acoustic compliance composed of the air in the box and the passive cone supporting element resonates with the passive cone mass to enhance the bass. The main advantages of this kind of loudspeaker are that it avoids the unstable sound generated by the reflection sound hole, and can obtain good sound radiation effect even if it is small in size, so it has high sensitivity, can effectively narrow the working range of the loudspeaker, has little standing wave influence, and has clear and transparent sound.

With the improvement of living standards, many people have installed stereos in their homes. The above article is about the brands and types of modern audio, but Bian Xiao doesn't know much about it.