![]() ![]() Unfortunately, previous versions of devices and software persist in the marketplace, including headsets, phones, cars and computers. While audio is starting to see some applications using BLE, the rest of the discussion for this post will focus on Classic Bluetooth technology, also called BR/EDR (for Basic Rate/Enhanced Data Rate). The Bluetooth 4.0 specification introduced a lower power, lower data rate technology called Bluetooth low energy (BLE) as discussed in our earlier article about Bluetooth wireless technology. ![]() These were introduced starting with an enhanced audio channel and eventually a high quality Advanced Audio Profile as discussed below. To address these new scenarios, different and more advanced encoding methods were being developed and support for these and quality stereo was needed (see Codecs below). The headset implementation worked well for its initial intended purpose but wasn’t good enough in some scenarios, particularly for higher quality speakers and stereo headsets. The audio headset became the killer device for Bluetooth, becoming so successful that the term Bluetooth became the term popularly used for a wireless headset ("where did I leave my Bluetooth?")Īs often happens with technology, as the platforms expanded so did the use cases. ![]() The initial Bluetooth specification came out in 2000 and new hardware quickly followed. In particular, they understood that both data and audio connections were being enabled by the cellular networks that provided these mobile phone connections. They wanted something that didn’t exist: a wireless connection that was low power and inexpensive, yet robust enough for the variety of uses they had envisioned. Laptops were large and heavy, the PDA (Personal Digital Assistant for the uninitiated) was just about to arrive on the scene, and the Apple Newton was about the closest thing there was to a smartphone.īluetooth wireless technology was conceived in this era when a group of visionary engineers realized that using wires to connect devices to those new wireless mobile phones would limit their usability and adoption. ![]() Before the start of the millennium, the cellular mobile phone was relatively new. ![]()
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