Advanced technology has introduced wireless headphones. You can connect it easily to different devices without messy cables. It does not limit movement. Wireless devices can be connected in three ways.
- Infrared
- Radio
- Bluetooth
In this post, let’s understand Bluetooth technology, as it is popular wireless connectivity in use, today. Today, the majority of gadgets like tablets, speakers, smartphones, and TV are blue-tooth enabled. Freelace wireless earphones offer portability and convenience. It is compatible with multiple audio devices.
How do Bluetooth headphones function?
Wireless and wired headphones work similarly. Both are portable and take on any kind of factor like earphones, headphones, open-back, closed-back, on-ear, over-ear, etc. The main component of any kind of headphone is the drivers or transducers. The way audio is conveyed from the source to drivers is changed but the transducer elements don’t alter at all.
Bluetooth means no cumbersome cables. You can freely move away from the audio source and enjoy mobility free from messy cables.
To work wireless headphones need two components.
- Headphone
- Transmitter
In speakers, TV, and smartphone, the transmitter is a tiny chip including Bluetooth radio and an app that pairs with different Bluetooth-enabled devices. Headphone plays the role of a transducer of radio signals. It converts the audio signal output into a radio frequency that is communicated over the air.
Steps involved in Bluetooth headphone audio transmission
- An audio source sends an audio signal to the wireless transmitter.
- The wireless transmitter encodes the audio signal into a carrier wave.
- Carrier wave with single frequency is broadcasted via space.
- A wireless receiver is tuned for picking the carrier wave with a single frequency.
- The wireless signal is accepted and efficiently decoded to an audio signal.
- Wireless audio signals are transformed into analog signals through a digital-to-analog converter [needs specially designed headphones].
- An in-built amplifier intensifies analog audio signals.
- An intensified audio signal is conveyed to headphone drivers.
- Transducers or headphone drivers transform the intensified audio signal into sound.
Technically, Bluetooth makes use of Radio Frequency [RF]. It works through a pairing device. For using Bluetooth technology, pair the headphones with a device for audio transfer. Information is transferred one way and the headphones are controlled by the audio device.
Bluetooth spreads digital information through short-range radio frequencies ranging between 2.400 GHz to 2.485 GHz. 75 different frequencies are used within the range for information transfer. The frequency can change 1600X per second for avoiding hindrances from other
Bluetooth-enabled connections but works fine for sending audio wirelessly. The majority of BT headphone devices belong to Class 1 or 2. It means the signal transferred to the paired device has maximum approved power of –
- 100 mW for Class 1
- 2.5 mW for Class 2
The signal range for –
- Class 1 is 330 feet or 100 m
- Class2 is 33 feet and 10 m
Remember, the lower the power consumption the longer the battery life. Consistent enhancement is made in the betterment of audio quality even though the quality of Bluetooth is not similar to wired connectivity.
