Recently, some media sources said that the United States refused to issue a visa to a Chinese WAPI (Wireless Local Area Network Security Standard) proposal technical expert, making it impossible to participate in the International Organization for Standardization meeting held

VoIP refers to the transmission of voice over a network that uses the Internet Protocol, where IP stands for the Internet Protocol, which is the backbone of the Internet. The Internet Protocol can transfer emails, instant messages, and web pages to thousands of PCs on the phon

Super UTM will appear a series of developments in network security is leading to the emergence of a comprehensive UTM solution, so that the network can scale to withstand most attacks. The real UTM functional components should include: * The firewall needs to have the abilit

First, the donor is in a skin. Recently, I discussed with a friend about IPTV, Internet TV, Smart TV for a long time. I feel that with the popularity and wide application of Android, the industry has entered a new round of concept hype, that is, grasping the hottest concepts

First, the donor is in a skin. Recently, I discussed with a friend about IPTV, Internet TV, Smart TV for a long time. I feel that with the popularity and wide application of Android, the industry has entered a new round of concept hype, that is, grasping the hottest concepts

As the data transmission rate of cellular networks increases, the demand for data transmission by data cards and mobile phones is also increasing. As far as WCDMA mobile phone power amplifiers are concerned, since mobile phones are often used in urban areas with dense base sta

1 Introduction With the rapid development of Internet technology and multimedia technology, the application of voice communication technology is becoming more and more widely and more and more valued [1]. Today's embedded devices are becoming more complex, with more featu

1. Tips for room size Audio and electro-acoustic conversion tools will eventually become sound echoing in your living room. The sound is sensitive to space. Although it is difficult to make it clear, the larger the room, the greater the demand for sound energy. Therefore, ple

1. Tips for room size Audio and electro-acoustic conversion tools will eventually become sound echoing in your living room. The sound is sensitive to space. Although it is difficult to make it clear, the larger the room, the greater the demand for sound energy. Therefore, ple

1 Introduction This article designs a headphone amplifier circuit with a common cathode amplifier as the input stage and an SRPP amplifier circuit as the output stage. A micro-variable equivalent model is established for this circuit, a reasonable device is selected, and the

In order to achieve the best user experience for each audio application, consumers' PCs usually have an audio peripheral that fills their desks. Depending on the task, users need to modify the audio settings in the software, and actually have to switch between different pe

One. Design Idea of ​​845 Single-ended Class A Tube Amplifier 1. The front stage adopts 6H8C low-frequency voltage amplifier tube to realize the popular SRPP connection and cathode follower circuit. The advantages are simple structure, good linearity, strong over