#Bluetooth versions distance code#
Improve the device pairing process: in the past, in the connection process, it was necessary to use the personal identification code to ensure the security of the connection, while the improved connection method will automatically use the digital password for pairing and connection. In order to improve the problems of Bluetooth technology, the Bluetooth SIG Organization (special interest group) launched.īluetooth 2.1 + EDR version of Bluetooth technology. Subsequently, the stereo decoding chip is added to the chip of Bluetooth version 2.0, so even A2DP (advanced audio distribution profile) can not be needed. Of course, version 2.0 also supports stereo operation.
That is, while making voice communication, it can also transmit files / high-quality pictures. The transmission rate is about 1.8m/s ~ 2.1m/s, and there can be (duplex) working mode. In addition, the bandwidth frequency response is still not ideal, and it can not be used as a stereo transmission tool.Ģ.0 is an improved version of 1.2. It supports the transmission requirements of stereo sound effect, but it can only work in (simplex) mode. (too deep technical theory will not be detailed!).
#Bluetooth versions distance software#
Similarly, the transmission rate is only 748 ~ 810kb / s, but the anti-interference frequency hopping function of software is added. In addition, indicators such as bandwidth frequency response are not ideal, so it is not the best stereo transmission tool. This initial version supports the transmission requirements of stereo sound effects, but it can only work in (simplex) mode. due to the early design, it is vulnerable to the interference of similar communication products between the same frequency and affect the communication quality. The transmission rate is about 748 ~ 810kb / s.
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