Headphone principle

With the continuous development of communication technology and the surprising emergence of new headset products, how can you keep up with the times? Is a headset or earbud design suitable for you? Here are quick solutions. Please take a moment to browse the following list of common terms and trademarks. We can quickly determine which Plantronics headset solution is best for you!
The amplifier amplifier makes the sound louder. This technology enables headsets to be used with corded telephones and telephone systems. Plantronics manufactures parallel pins for multiple independent corded amplifiers, such as the M12 and A20. Amplifiers are also included as part in headset systems such as the S12 and S20. The CA10 is an amplifier for a cordless headset system.
Back of the head Plantronics recently introduced a new type of behind-style neckband attachment, this attachment is DuoPro? (H181 and H181N) and DuoSet? (H141 / H141N) headsets increased a unique wearing style. The neckband provides a brand-new choice for those looking for fashionable wear.
Bluetooth® technology Bluetooth® is a surprisingly new cordless technology that uses short-range radio links designed to eliminate the cables and data lines currently connected to most computing and communications equipment. At Plantronics, we are using this technology in new cordless mobile headset products such as the Discovery® 655.
Call Clarity?
Call Clarity is Plantronics' patented technology, which is an electronic signal processing and noise cancellation system included in the amplifier, which improves the quality of transmission and reception.
The convertible headset offers two options for wearing styles, usually a steady head-mounted and ear-opening style that is easy to open/close. These headphones can be easily "switched" from one style to another in a few simple steps. Plantronics convertible headsets include DuoProTM (H171/H171N), DuoSetTM (H141/H141N) and M170/M175 mobile headsets.
Earbud and In-Ear Earbud style refers to the machine with a small ear speaker, headset speaker inserted into the ear canal, the microphone in the headset cord. The H132N office headset and the MX100 and M205 mobile headsets are examples.
The Firefly? In-flight indicator Firefly is a unique use indicator that lets people know that you are on a call. There is no more call interruption! You can find this indicator on a CT12 cordless headset phone.
Noise removal “Noise removal” refers to a microphone design that significantly reduces the transmission of background noise and improves the sound quality of the headphones. Noise-clear headphones are particularly suitable for office workers who are close to each other. In mobile applications, removing noise microphones can reduce background noise in cars, airports, or streets.
The ear-hook “ear-hook” refers to a Plantronics headset with an ear-hook ear cap or other device to secure the position of the headset. TriStar®, Mirage®, and M130 are examples.
Two-Channel Headsets When filtering or masking background noise is important, you should consider using two-channel headphones such as the Supra® (H61/H61N) headset and the EncoreTM (H101/H101N) headset. This style allows you to hear both ears.
Mono Headset On the other hand, Plantronics mono headphones only provide sound for one ear. Unless otherwise indicated, Plantronics headsets are all monaural.
Quick Disconnect?
On H Series headsets, the Quick DisconnectTM (QD) connector at the end of the cord allows you to disconnect the headset from ongoing conversations when you need to retrieve a fax or file, and then easily reconnect. With QD, you don’t need to interrupt the call or take off your headset.
SoundGuard Plus?
SoundGuard Plus is an automatic gain control system in Plantronics amplifiers that provides natural voice tones and removes high tones and occasional noise and hum on the line.
More headphone investment, headset prices please consult China Headset /

Mini Projector

The so-called mini projector is also called pico projector, TRT-Lcos Portable Projector. Mainly through the 3M LCOS RGB three-color projector and 720P film decoding technology, the traditional huge projector is refined, portable, miniaturized, entertaining and practical, making the projection technology closer to life and entertainment.
Usually the projector has certain regulations on 2 aspects:
a). Size: Usually the size is the size of a mobile phone.
b). Battery life: It is required to have at least 1-2 hours or more of battery life when it is not connected to power.
In addition, its general weight will not exceed 0.2Kg, and some do not even need fan cooling or ultra-small silent fan cooling. It can be carried with you (it can be put into your pocket), and the screen can be projected to 40-50 inches or more.
Advantage:
1. Completely replace the MP5 player, video, listening to songs, playing games, e-books, picture browsing, etc. MP5 video is affected by physical performance, the screen can not be bigger, and the screen of this thing is at least 20 inches.
2. Instead of the TV function, the machine can have a built-in CMMB function, or it can be directly connected to the set-top box to play the TV, and it can be used as a 21-inch TV during the day.
Look, it can be used as a 60-100-inch TV at night to achieve the effect of home theater; it is convenient to move and break through the traditional film and television space. Even if you are on the mountain, you can also share today's TV series, movies, and MTV with your lover.
3. Business office: instead of large projectors, it is used for company meetings; the price of large projectors is 4,000 to 14,000, and the lamp life is more than 1,000 hours, which is not convenient to carry. 30,000 hours, no need to change the bulb for 3 years, easy to carry, the salesman only needs to bring a micro projector to demonstrate the new product, which can achieve the demonstration effect.
4. Teaching: training meetings, classroom teaching; traditional projectors are not easy to carry. In school classrooms, due to the naughty students, projectors are not safe to place in the classroom and are easily damaged by students. The portability of micro projectors makes up for the teaching vacancies. In the future, teachers only need to store the materials in the projector and show them to students for teaching, saving the trouble of textbooks and handwriting with pens and chalks.
In addition, the micro-projection has no radiation, which can fully protect pregnant women and people with myopia. Its low power consumption function is 1/1,000,000 of the power consumption of color TVs. One day of electricity has completely impacted the indicators of safety, environmental protection, health, etc., and has made amazing contributions to future social development, standing at the peak of the green world as a leader.

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