Currently, there are many Bluetooth headsets on the market, but relatively few Bluetooth speakers. The so-called Bluetooth speakers actually refer to speakers that rely on the Bluetooth transmission protocol as a carrier for data transmission. Since most mobile devices (mobile phones, notebooks, and tablet computers) are equipped with Bluetooth chips, they do not need data cables or audio cables to connect. Quickly recognized, easy to operate and easy to connect.

From the perspective of sound quality performance, the effective audio data volume of CD sound quality data (44.1KHz sampling rate, 16bit sampling precision) is about 1.4Mbit. To transmit CD sound quality music signals, the transmission rate only needs to be kept at 2Mbit per second. Bluetooth The "2.1+EDR" specification is sufficient. Moreover, since this type of product often follows the mature acoustic structure of traditional speakers, and realizes wireless playback after integrating the Bluetooth module, its sound quality performance is comparable to that of speakers of the same level.

In terms of specifications, although the Bluetooth 3.0/4.0 standard has been proposed, the former is mainly reflected in the fact that the radio frequency modulation method of Bluetooth is in line with Wi-Fi, and the latter is reflected in the application of automatic power control, that is, low power consumption. Both versions represent advances in Bluetooth technology, but have little connection to audio applications. From the perspective of chip-level applications, it is suitable for version 3.0/4.0. Bluetooth mainstream speakers all adopt the A2DP stereo protocol, and in 2012, smartphones, tablets and other devices all support the A2DP protocol, so from the perspective of use, there is no obstacle at all for Bluetooth speakers.