Bluetooth Audio Codecs are technologies that compress and decompress audio data for wireless transmission between devices, such as smartphones and headphones. They determine the quality and efficiency of sound playback over a Bluetooth connection. Common codecs include SBC, AAC, and aptX, each offering different levels of audio quality and latency. The choice of codec can affect your listening experience. For instance, aptX provides better sound quality with lower latency compared to SBC, making it ideal for music and gaming. Understanding these codecs helps users select the best audio devices for their needs.