In the ever-evolving world of Bluetooth audio, codecs are responsible for turning your tunes into something small enough to be transmitted wirelessly from your phone to your best over-ear headphones. We need codecs because that Bluetooth link just isn’t robust enough to handle unaltered audio straight from your preferred music streaming service.
Some of these codecs have been with us since the dawn of the MP3 format. They use “lossy” compression, which means they achieve their small size (as measured in bits per second) by removing some of the information from the source audio.
