LDAC is a proprietary audio coding technology developed by Sony that allows streaming high-resolution audio over Bluetooth connections at up to 990 kbps at 24 bits/96 kHz). It is a type of audio codec that is used by various products, including headphones and earphones). LDAC is an alternative to Bluetooth SIGs SBC codec, and its main competitors are Qualcomms aptX-HD/aptX Adaptive and the HWA Union/Savitechs LHDC). LDAC utilizes a type of lossy compression by employing a hybrid coding scheme based on the modified discrete cosine transform and Huffman coding to provide more efficient data compression). By default, LDAC audio bitrate settings are set to Best Effort, which switches between 330/660/990 kbps depending on connection strength). LDAC is part of the Android Open Source Project, enabling every OEM to integrate this standard into their own Android devices freely). The encoder library is open source, and the implementation for Linux is already present in bluez-alsa, pulseaudio-modules-bt, and in PipeWires bluez5 module). However, the decoder library is proprietary, so receiving devices require licenses).

In summary, LDAC is a type of audio codec developed by Sony that allows high-resolution audio to be streamed over Bluetooth connections. It uses a hybrid coding scheme to provide efficient data compression and is an alternative to Bluetooth SIGs SBC codec. LDAC is part of the Android Open Source Project, and its encoder library is open source, but the decoder library is proprietary.