List of Common Bluetooth Audio Codec

The following is a set of quick notes on the list of audio compression formats. This is a live research article and will be updated in due course.

Codec	By	Bitrate (kbps)	Bits	Freq (kHz)	Features
SBC (Sub-Band Codec)	Bluetooth SIG	328 kbit/s (44.1 kHz) 345 kbit/s (48 kHz)	16		Universal among all Bluetooth devices
AAC (advanced audio codec)	Various	250 kbps	16/24		Lossy compression. The default format for Apple devices and also supported on Sony, Nokia and Nintendo.
LDAC	Sony	330 up to 990 (96 kHz)	32		Lossy+Lossless SBC and aptX outperforms at 330 kbps
aptX	Qualcomm	352	16	44.1	CD-quality audio over Bluetooth Compression Ratio 4:1
aptX LL (Low Latency)	Qualcomm	352	16	44.1	Compression Ratio 4:1 A delay of <40ms to sync with video
aptX HD	Qualcomm	576	24	48	Compression Ratio 4:1 High-res audio
aptX Adaptive	Qualcomm	276 and 420	24	48	Compression Ratio 5:1 to 10:1 New coding combining audio quality, low bitrate and low latency to adapt and use with gaming, videos, etc.

General Notes:

Bit-Rate is Bit-Depth (Bits) multiplied by Sample Rate (Hertz or Cycle Per Second) and Channels which gives us Bits Per Second.

Bit-Rate = Bit Depth x Sample Rate x Channel

where,

Bit-Depth is the number of digital bits for each audio file, for example, CD-quality audio has 16-bits, while higher resolution extends to 24-bits.
Sample Rate is in cycles per second or Hertz

Bits Per Second (bits/s) = Bits X Cycles/s x Channel

Example: The theoretical bitrate for 16-bit audio x sample rate of 48 kHz is 768 kbits/s per channel.

For Bluetooth, the actual bitrate is lower due to compression and losses in transmission over the wireless protocol.