Bluetooth Codec & Bit rate

[1세대]

AAC(코덱16bit 48KHz)       Max Bit rate 250kbps  - MPEG(위원회)와 AT&T 벨 연구소, 프라운호퍼, 돌비 연구소, 소니 등 공동개발

SBC(코덱16bit 48KHz)       Max Bit rate 328Kbps  - The Bluetooth Special Interest Group (SIG)

Apt-X(코덱16bit 48KHz)     Max Bit rate 352 kbps - CSR(퀄컴자회사)

[2세대]

UHQ-BT(코덱24bit 96KHz)    Max Bit rate 521kbps - 삼성           

apt-X HD(코덱24bit 48KHz)  Max Bit rate 576kbps - CSR(퀄컴자회사)

LDAC(코덱24bit 96KHz)        Max Bit rate 990kbps - 소니           

Now You’re Ready for Fine Bluetooth Audio in 2018

BluetoothThe most important things to remember is your phone (transmitter) and receiver (headphones/speakers or Bluetooth receiver) must be compatible with the same Bluetooth codec to work. If they’re not compatible, they’re defaulting to SBC.

Generally, the bitrate between devices corresponds directly to the quality of audio you can expect. The higher the bitrate, the better possible audio quality. But it’s never that simple, because if you’re serious about sound, you also want to avoid making your phone transcode music files between different codecs, because this will result in compounded compression. So, it's usually better to get a clean transfer between lower-bit, but compatible codecs, than to have to transcode to a lossy codec from another, higher-bit lossy codec.