Home > News > Popular science knowledge > The version of the Bluetooth h.....


The version of the Bluetooth headset and the relationship between the working distance

  • Author:Benson
  • Release on :2017-07-24
As long as a little understanding of the sport Bluetooth headset will know that the Bluetooth headset has a certain range of work, and its scope of work is directly affected by the Bluetooth headset version, then the different version of the Bluetooth headset, it will have how A different range of work? In fact, in a lot of introduction on the Bluetooth headset can often see Bluetooth1. + EDR, 2.1 + EDR, 3.0 and the latest 4.0 and so on, but most people do not understand what this is Meaning, in fact, this is the Bluetooth headset supports the meaning of the Bluetooth version,While the latest Bluetooth versions are backward compatible with the lower version.
From Bluetooth 1.1, has been developed to today's Bluetooth 4.0, and the middle of the upgrade part of the main focus on the Bluetooth transmission speed, reduce power consumption and increase the transmission distance. Such as Bluetooth 2.0 + EDR transmission speed reached 2.1Mbps, three times the speed of Bluetooth 1.2, followed by Bluetooth 2.1 + EDR is based on the 2.0 technology improved version, to solve some of the problems of connectivity and power and no speed On the upgrade, which is the enhanced rate of EDR English abbreviation.

Followed by Bluetooth 3.0 and the latest Bluetooth 4.0. Bluetooth 3.0 is the biggest increase in Bluetooth 2.0 + EDR maximum speed of 8 times, reaching about 24Mbps, while the need to call WiFi function to achieve high-speed data transmission, but the premise is that the device requires a WiFi module. Finally, Bluetooth 4.0 is the latest Bluetooth technology, compared to Bluetooth 3.0, the latest 4.0 version supports lower power consumption and 3 seconds low latency, the most important is to increase the transmission distance to 100 meters, the actual use of distance than the Bluetooth 3.0 To enhance a lot, the current iPhone 4S and iPhone 5 and other mobile phones are to support the latest Bluetooth 4.0 technology.

In addition, along with the Bluetooth headset there is a noun: A2DP, full name is Advanced Audio DistributionProfile Bluetooth audio transmission model agreement, support A2DP protocol equipment is the biggest feature can be through the Bluetooth stereo headphones to listen to music, but A2DP and Bluetooth technology is not , Whether to support A2DP depends entirely on whether the manufacturer is loading the A2DP protocol. In a large number of domestic Bluetooth headset, Jun in the series of D-91B headset is a A2DP protocol with Bluetooth headset, support AVRCP function, is a true sense of a stereo Bluetooth headset. Since the birth of Bluetooth technology, it has a greater transmission distance and non-directional transmission of data to replace the advantages of infrared transmission technology, the maximum distance of 10 meters, but at a distance of about 7 meters when the occasional intermittent phenomenon, more than 10 meters will lose connection; and in the latest Bluetooth 4.0, Bluetooth transmission distance increased 10 times to reach 100 meters, from the recent support for Bluetooth 4.0 technology headset use point of view, the indoor distance of about 20 meters on the use of no impact, practicality has also been further improved.

Based on the above can know that the working range of Bluetooth headset and its Bluetooth version has a direct relationship, and now the working range of Bluetooth headset is generally 10 meters, while the latest 4.0 Bluetooth version is more than 10 meters, up to 100 meters , Interested friends can continue to understand this aspect.