Recently, Guangdong Unicom has fully opened HSPA + networks in eight major cities including Guangzhou, Shenzhen, Dongguan, Foshan, Zhongshan, Zhuhai, Huizhou, and Jiangmen, and the peak network speed has been upgraded to 42Mbps. The industry believes that when mobile Internet access has become popular, the network speed has increased , Will greatly accelerate the development of mobile Internet.
Status: Internet speed cannot keep up with terminal development speed
In the era of mobile Internet, people's dependence on the network has become a habit. Looking at the terminal market, smart phones that support 3G networks have become standard, and the popularity of the 3G version of the tablet is self-evident. At the beginning of 2013, mobile traffic accounted for 13% of the overall Internet traffic. At present, the number of mobile Internet users has exceeded the number of broadband Internet users. 60% of people access the Internet through mobile phones, and this number is still rising.
In the past year or two, with the rapid development of smart terminals and the increasingly rich terminal apps, people have unknowingly been in an important era of Internet-based transformation. Under such a changing situation, people's lives have long been inseparable from the Internet, and users' active demand for network speed is also growing. Faced with such pressure, increasing network speed has become a major problem that operators need to solve.
Although the speed of the mobile Internet has far exceeded the development speed of the desktop Internet, the problem of network speed has always plagued end users. Many netizens sighed: "Flagship phones that cost four or five thousand to buy are still very slow." In the final analysis, due to system or technology limitations, the 3G network speed of some domestic operators is far from the upper limit of the network speed supported by the terminal. Therefore, consumers spend a lot of money to buy flagship smart terminals but cannot get a flagship-level experience, and network speed has become a stumbling block that restricts users' consumption of smart mobile terminals.
Users: willing to pay for high-speed networks
Mobile applications are becoming more and more convenient, and more and more people are willing to buy mobile smart terminals to enjoy mobile life. Since mobile smart terminals have entered people's daily life, various Internet applications have begun to migrate to mobile smart terminals. News, Weibo, games, movies, music, and other Internet applications have created their own mobile application App clients. At the same time, with the increase of mobile application App clients, mobile applications have become more convenient and the types have become more and more abundant, more people are willing to use high-speed networks to experience wonderful high-quality applications to enjoy mobile life.
In one sentence, the speed of this Internet change is accelerating and the pace is strengthening. Only a faster network can bring the mobile Internet into the golden period of development.
In order to adapt to the rapidly growing development needs of mobile Internet, on May 17, this year, Guangdong Unicom once again created the highest record of speeding up and upgrading of 3G networks in the country. On the basis of the establishment of a WCDMA HSPA + network with a downlink rate of 21M in 21 cities in the province, in Guangzhou , Shenzhen, Dongguan, Foshan, Zhongshan, Zhuhai, Huizhou, Jiangmen eight cities have fully opened HSPA + 64QAM dual carrier, wireless network shock upgrade to 42Mbps, making the Pearl River Delta the first in the country to become the only city cluster with a network speed of up to 42Mb / s.
It is understood that Guangdong Unicom has also made full preparations for supporting customers using 42M high-speed networks, and has launched iPhone5, Xiaomi 2S, Nuo based 920, OPPO Find5, Samsung Galaxy 4, Jinli 708W, etc. The 6 high-end machines give users a new understanding of the super-speed thrill of the Wo • 3G network, leading users to enter the integrated high-speed smart city life circle first.
Speakers are one of the most common output devices used with computer systems. Some speakers are designed to work specifically with computers, while others can be hooked up to any type of sound system. Regardless of their design, the purpose of speakers is to produce audio output that can be heard by the listener.
Speakers are transducers that convert electromagnetic waves into sound waves. The speakers receive audio input from a device such as a computer or an audio receiver. This input may be either in analog or digital form. Analog speakers simply amplify the analog electromagnetic waves into sound waves. Since sound waves are produced in analog form, digital speakers must first convert the digital input to an analog signal, then generate the sound waves.
The sound produced by speakers is defined by frequency and amplitude. The frequency determines how high or low the pitch of the sound is. For example, a soprano singer's voice produces high frequency sound waves, while a bass guitar or kick drum generates sounds in the low frequency range. A Speaker System's ability to accurately reproduce sound frequencies is a good indicator of how clear the audio will be. Many speakers include multiple Speaker cones for different frequency ranges, which helps produce more accurate sounds for each range. Two-way speakers typically have a tweeter and a mid-range speaker, while three-way speakers have a tweeter, mid-range speaker, and subwoofer.
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