Bluetooth headset products currently on the market more, and Bluetooth speakers are relatively small. The so-called Bluetooth speaker, actually refers to the carrier as a data transmission on the Bluetooth transmission protocol of the speakers, because most of the mobile devices (mobile phones, laptops, tablets) were equipped with Bluetooth chip, does not need the data line or audio line connection can be quickly identified, simple operation, convenient connection.
From the sound quality, CD quality data (44.1KHz sampling rate, 16bit sampling precision) effective audio data to be transmitted is about 1.4Mbit, CD quality music signal transmission rate only need to keep per second can be implemented in 2Mbit, Bluetooth specification is adequate to "2.1+EDR". But, because this kind of products are often used in traditional speaker acoustic structure of mature, the realization of wireless broadcast after integrated Bluetooth module, the sound quality with the same level of speaker products quite.
From the specification point of view, although the Bluetooth 3.0/4.0 standard has been proposed, but the former is mainly reflected in the RF modulation of Bluetooth in to the Wi-Fi line, the latter is reflected in the application of automatic power control, that is, low power, from the two version reflects the Bluetooth technology progress, but not contact with audio application. From the chip level application, for the 3.0/4.0 version.
A2DP stereo Bluetooth mainstream loudspeaker adopts the protocol, while the 2012 intelligent mobile phone tablet computer equipment to support the A2DP protocol, so the use of perspective, Bluetooth speakers without any obstacles.