With the development of The Times, today's world has become a "global village". In today's world of economic globalization and multi-polarization, any country or region that does not engage in external exchanges is equivalent to directly giving up the opportunity for its own development and the future. So the most direct way of communication between countries is between senior leaders of the country, and the language problem has become a difficulty. Thanks to the development of communication equipment and science and technology, simultaneous interpretation machine has solved the problem of language barrier. Do you understand how a simultaneous interpretation machine works?

　　First, the principle of simultaneous interpretation equipment

　　1. In the back of the conference hall, there will be two closed small houses, just like telephone booths in Britain. The front side of the house is glass, which can see the inside of the conference hall, and the house is used for sound insulation. In the house, there is a microphone in front of the earphone. The speaker's speech can be heard in the earphone. The interpreter directly translates into another language at the same time and speaks into the microphone.

　　2. The machine used by the attendees had two channels, one for the original sound and one for the translated sound. This is bilingual, there are many languages in the European Union, sometimes multiple languages are translated, so there is relay translation, usually the original language is translated into English or French, and the other smaller language translators hear the translator's version, and then translate the translated version into the target language that they want to translate into.

　　Second, what are the types of simultaneous interpretation equipment

　　1. The simultaneous translation device is an indispensable system equipment to realize the synchronous translation of high-level international conferences. The device can ensure that the speaker's speech will be translated into the designated target language simultaneously, and then transmitted to the delegates through another channel. Delegates at the conference are free to choose which language channels they can understand. The simultaneous interpretation devices available in the Chinese market have four, eight, 16 and 32 channels, each of which transmits one language.

　　2. According to the transmission principle of the equipment, it can be divided into wired and wireless two kinds. Wired simultaneous transmission equipment is mostly used in some fixed conference places, which is not easy to move, not easy to rent and other shortcomings, and has been fully withdrawn from the market before 2010. Wireless simultaneous interpretation equipment is divided into frequency modulation (fixed frequency) and infrared.

　　3, because the frequency modulation (fixed frequency) type because of the signal sound source by too many interference factors, sound quality is not ideal, so the current market frequency modulation (fixed frequency) type of simultaneous transmission equipment is not seen, will soon be completely eliminated. The infrared simultaneous transmission device is a popular device at present, the signal is transmitted through the infrared, the effect is stable, and the confidentiality is strong. With the continuous development of infrared technology, infrared frequency is different, the effect is also different.