The Qualcomm Aqstic audio codec (WCD9340) supports popular voice UIs is designed to allow devices to have always-on and always-listening capabilities at very low power and high-resolution playback standards. It has an integrated audio codec DSP to support two voice UI wake-up words simultaneously and has an integrated DAC (digital-to-analog converter) that supports up to 384kHz/32bit Hi-Fi audio playback. The DAC on the Qualcomm Aqstic codec has ultra-low Total Harmonic Distortion plus Noise (THD+N), which means no additional noise or signal is added for the most authentic sound reproduction possible.