Tweeter technology Most current speakers are electric speakers, and the upper limit frequency is difficult to reach 20KHZ. Let's take a look at the force of the electric speaker. The force of the voice coil to push the paper tray is F. F can be decomposed into longitudinal force Fe and lateral force Ft. Because of the presence of Ft, the cone surface of the paper tray alternately bends, which causes the tray to vibrate laterally to form a standing wave. The standing wave causes the frequency characteristics of the speaker to fluctuate at high frequencies, and the characteristic curve is not uniform enough. To overcome this shortcoming, it is to try to reduce the weight of the paper tray (reduce inertia, thereby weakening the lateral vibration) and increase the rigidity of the paper tray (reduce the bending caused by Ft on the paper tray). For this reason, people have made many improvements to the paper tray of the high-frequency speaker, such as the use of metal cymbals to make the paper tray, this paper tray is not only hard and light. In addition, the hardness and elasticity of boron are very high. It is a good material for making paper trays. First, titanium is used to make a 10-20 microns thick paper tray substrate, and then the substrate is placed in a vacuum at a high temperature of 2500 degrees C. , Boron is bombarded with a strong electron beam, which is evaporated and deposited on the surface of the titanium substrate. The upper frequency of the speaker produced in this way can reach 36KHZ. To further increase the upper limit frequency of the loudspeaker, it is necessary to restructure it. There is a kind of loudspeaker with an upper limit frequency of 50KHZ adopting a band structure, as shown in Figure 2. Six permanent magnets are divided into two groups to form a magnetic circuit system. The diaphragm is made of 7-8 microns thick polymer film, which is light and soft. A 10 micron thick aluminum ribbon voice coil is attached to the diaphragm. When current flows through the voice coil, the sound membrane will generate F + and F- forces according to the direction of the current, and there is no problem of lateral force at all. Because the mass of the diaphragm is very light and the motion of the diaphragm has almost no inertia, the frequency response of the speaker is particularly good. 4G Ufi and 5G Ufi are two Wireless Router devices in mobile communication technology. All of them can provide wireless Internet connectivity, but the main difference is the network technology and speed they support. 4G UFI,4G UFI oem,best 4G UFI,cheapest 4G UFI Shenzhen MovingComm Technology Co., Ltd. , https://www.mcrouters.com
4G Ufi is a wireless router device that uses fourth-generation mobile communication technology (4G). It can connect to the Internet over a 4G network and provide network connectivity to other devices via Wi-Fi or wired connections. Key benefits of 4G Ufi include:
1. High-speed network connection: 4G Ufi can provide faster network speed than the traditional 3G network, which can meet the needs of users for high-speed Internet. This is important for applications with high bandwidth requirements such as online video, games, and downloading large files.
2. Stable connection: 4G Ufi uses 4G network connection, which provides a more stable and reliable connection compared to 3G network. This means users can better enjoy a seamless web experience, whether at home or on the move.
3. Mobility: Since 4G Ufi uses a wireless connection, users can use it anytime, anywhere. This is very convenient for people who need to use the network in different locations, such as travelers, business people, and students.
5G Ufi is a wireless router device that uses fifth-generation mobile communication technology (5G). It can connect to the Internet via 5G networks and offer faster speeds and lower latency. Key benefits of 5G Ufi include:
1. Extremely high Internet speed: 5G Ufi can provide higher Internet speed than 4G networks. According to the specifications of 5G technology, its theoretical peak speed can reach hundreds of megabits per second or even higher. This allows users to download and upload files faster, watch HD videos smoothly, and enjoy a faster Internet experience.
2. Low latency: 5G Ufi can provide lower latency than 4G networks. Latency refers to the time interval between sending and receiving data and is important for real-time applications such as online games, video calls and iot devices. Low latency provides faster response times and a better user experience.
3. Large capacity: 5G Ufi can support more device connections. Due to the high speed and low latency of 5G networks, it can connect more devices at the same time without degrading network performance. This is useful for scenarios where multiple devices need to be connected, such as homes, offices, and public places.
In summary, 4G Ufi and 5G Ufi are both wireless router devices, and the main difference between them is the supported mobile communication technology and speed. 4G Ufi provides high-speed, stable and mobile network connections, while 5G Ufi provides higher network speeds, low latency and large-capacity connections. Which device you choose depends on the user's specific requirements for network performance and requirements.