How Bluetooth and Bluetooth headset works.

 

            

            Can you remember the days when we used to send mp3 songs and 3gp movies on small mobiles of screen 240*320? Also, you hear songs on wireless headsets. Do you know how they work? We were using Bluetooth technology to send the files from one mobile to another.  Bluetooth is a wireless technology standard used for exchanging data between fixed and mobile devices over short distances using UHF radio waves in the industrial, scientific and medical radio bands. In simple words, it is a technology to send and receive files from one device to another.

Bluetooth was invented in 1994 by Jaap Haartsen was an electrical engineer, working for telecommunications company Ericsson. The first consumer Bluetooth device was launched in 1999. It was a hand free mobile headset that earned the "Best of show Technology Award" at COMDEX.

Bluetooth works on the simple principle of sending and receiving data using radio waves. Every Bluetooth device is having an attachment known as an adapter. Using this adapter only data is sent and received. If your device is not having this Bluetooth adapter then you will not be able to send data using Bluetooth. Both the devices should be in the range of each other’s to get enabled for sending and receiving data. Once they are in range and enabled, they will be able to pair up and ready to perform their task.

The data which is sent and received is almost 700 Kilobytes per second through Bluetooth. There are almost 70 – 80 frequency channels that have a frequency of 2.45 GigaHertz using which the data is transferred. All the Bluetooth devices search for the same frequency and when they get the same frequency, they connect to each other and are able to transfer data.

There are Different Types of Bluetooth Technologies. Some of them are the following.

1.Bluetooth Headsets.

2.Stereo Headset.

3.Bluetooth Keyboard and Mouse.

4.Bluetooth GPS Device.

5.In Car Bluetooth Music Player.

 

Let us see the working of the wireless Bluetooth Headset. Once the Bluetooth of the headset is enabled and connected to the controlling device (here we will say it controller), the controller receives electrical impulses from the audio receiver. Once it is done a processor that is present in the controller is used to convert the impulses into radio waves. Till now the controller was able to convert the impulse (Sound) into radio waves.

Now, the headset converts the radio waves back into sound. The headset is having two separate parts, a speaker and a receiver. The receiver tries to catch the radio waves which are passing around it. The time at which radio waves pass, the electrons are excited and they create the electric signal. Using these electric signals, the sound is passed to the speaker and we are able to hear songs.

There is a lag of almost 1 sec in playing audio using Bluetooth. You may have noted the lag while playing online games and using Bluetooth headsets. This lag is created because at this time the electrical signal converts into radio waves and back into an electrical signal. Engineers are trying to reduce this time so that we will be able to get real time audio and there will be no lag.

This all about Bluetooth and Bluetooth devices. Let us know what do you won't know about in our contact form. We will try to give information as soon as we can.