At present, there are many Bluetooth headset products on the market, while there are relatively few Bluetooth speakers. The so-called bluetooth speaker, in fact, 1451367907748573.jpg refers to the speaker that relies on the bluetooth transmission protocol as a carrier for data transmission. Since most mobile devices (mobile phones, notebooks, tablet computers) are equipped with bluetooth chips, no data cable or audio is required. The line connection can be quickly identified, the operation is simple, and the connection is convenient.

In terms of sound quality performance, the effective audio data volume of CD sound quality data (44.1KHz sampling rate, 16bit sampling accuracy) is about 1.4Mbit. To transmit CD sound quality music signals, the transmission rate only needs to be maintained at 2Mbit per second. Bluetooth The "2.1+EDR" specification is sufficient. Moreover, because these products often follow the mature acoustic structure of traditional speakers, and realize wireless playback after integrating a Bluetooth module, their sound quality performance is comparable to that of speakers of the same level.

From the perspective of specifications, although the Bluetooth 3.0/4.0 standard has been proposed, the former is mainly reflected in the radio frequency modulation method of Bluetooth 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 advancements in Bluetooth technology, but have little to do with audio applications. From the perspective of chip-level applications, it is suitable for version 3.0/4.0.

The mainstream Bluetooth speakers all use the A2DP stereo protocol, and in 2012, devices such as smartphones and tablets all support the A2DP protocol, so from the perspective of use, the Bluetooth speakers have no obstacles at all.