Which technologies were implemented in earbuds to improve voice-call quality?

Answer

So far many Bluetooth chipset makers like Qualcomm have developed technologies for Bluetooth earbuds/headphones to deliver clearer voice calls. For example, cVc (clear voice capture) noise cancellation technology has been around for a long time but their implementation is approached differently (the calibre of the hardware) so the call quality is greatly varied between models and making calls outdoors is still challenging.  Recently AptX voice was introduced, and just a few models support it. aptX Voice was designed to improve the voice call by increasing the bandwidth to 32kHz with a flat 16kHz frequency response. Other companies like Sony, Samsung, OnePlus and Huawei use hardware (accelerometers and gyrometers) and AI to improve voice calls. We will see more improvements where the earbuds can sense (identify) your voice, enhance it and deliver to the caller while the background noises will be minimized. 

Category
Related products or articles