technoboxes - Technology News and Datas: Teknologi

Author:
base110919

Speaking is the major activity of people working in a school, training centers, media, government offices, and radio stations. Teachers, instructors, speakers, lecturers, news casters, government officials and even singers and hosts, devote large amount of their time speaking to crowd. If you keep yourself talking for almost 6 hours and more a day, surely you\'ll have your vocal cords exhausted especially if you are talking to a crowd that will need you to speak in louder voice.

Portable microphone is a great help for you to save your voice from too much use. A portable microphone must have a clear production of sound from live application and has high level of pressure of sound to make it more convenient to use. Basically, portable microphone is made to be able to transfer human voice to a louder result thus making it more comfortable for you talk in soft voice with having a worry if everyone can hear you or not.

Portable microphone is unidirectional directivity that helps reduce any unwanted sounds. It is usually has a mono channel type. Basically, portable microphone is perfect to be used in amplifiers, notebook computers, personal computers and even karaoke machines. Ideally, portable microphone very suitable to be used by preachers, teachers, singers, and other people who usually need to talk or use their vocal cords for performances and works.

Aside from this, portable microphone can also be use to amplify musical instruments such as piano, violin and guitars. It is convenient to use portable microphone than usual wired microphones since portable ones have features that can remove the unwanted or distorted sounds instruments may produce ones they are played with microphone on.

Most of portable microphone is made of high quality materials like alloy and are usually heavy thus making it more durable than those microphones made of lighter materials. Generally, there are varieties of portable microphones in the market. Some of them are in bigger sizes and some are smaller. The prices of microphones that are portable depend on the specifications, use, capacity, and quality of sounds the product can produce. Some are can be used with cable and some are via USB importer.

Portable microphone also varies in design. There are microphones that are stylish and perfect for those who are performing on stage. There are microphones that are simple and can be use in ordinary activities like classes and trainings.

Article Source: articlesbase

Categories: Teknologi

Author:
Frank Solan

General packet radio switching, popularly known as the GPRS service is data service, mostly used for IS-136 and global system for mobile communication (GSM) phones. Under the GPRS system, the date transferred is typically charged for each megabyte or kilobyte of transferred data as against data communication through the traditional circuit switching mode which is billed for the connection time, regardless of whether the user actually transferred data or was is an idle state.

GPRS is used in multimedia messaging service (MMS), short messaging services (SMS), wireless application protocol (WAP) as well as for accessing the internet and surfing the World Wide Web. The GPRS technology is packet-switched. This means that several users can share an identical transmission channel, transmitting only when there is data to be transferred. The total volume of available bandwidth can be dedicated immediately to users who\'re actually transmitting data at any point of time. Today even cheap mobile phones are boasting of GPRS facilities.

Like GPRS, 3G too is a wireless communication service. It\'s an ITU specification for third generation (analog cellular phones was the first generation and digital PCS the second) for mobile communication. 3G comprises increased bandwidth which is up to 384 kbps on a stationary device or one which is moving at a pedestrian speed, 128 kbps inside a car and 2 mbps in a fixed application. 3G can work over a wireless air interface including CDMA, TDMA and GSM. It\'s 'always on' and is a continuous connection to the World Wide Web via a laptop, desktop or a mobile phone.

In simpler terms, the 3G technology which even many cheap mobile phones boast of, is almost seven times faster compared to a dial-up connection. You can enjoy online mobile activities or play or work at speeds never expected before. The 3G technology supports multimedia data applications like photographs and videos, besides higher call volumes.

3G also facilitates video calling in which you can see the person at the other end, as long as that person also has a 3G device. Moreover, obtaining news and information over 3G is possible as you can access the internet from a computer or a cheap mobile phone. This was not possible with GPRS because of its limited connectivity.

There\'s one problem with 3G. The technology is yet to reach all corners of the world. Though inhabitants of large cities across continents are being able to derive the full advantage of 3G technology, many remote areas are yet to come under the ambit of GPRS. In such places, one has no option but to resort to the older GPRS method of accessing internet from his cheap mobile phone.

However, mobile phone operators have comprehended the benefits that 3G has over the GPRS and are increasingly extending the service to all parts of the world. The day won\'t be far when GPRS would be a thing of the past and people would be able to exploit the advantages of 3G even from a cheap mobile phone. The whole world will then be covered under 3G.

Article Source: articlesbase.com