Qualcomm Aqstic™ Audio Codec
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.
WCD9340 and Qualcomm Aqstic are products of Qualcomm Technologies, Inc. and/or its subsidiaries.
Voice Services Support: Amazon Alexa Voice Service, Microsoft Cortana, Baidu DuerOS, Google Assistant
Playback Dynamic Range: 130dB
Total Harmonic Distortion + Noise (THD+N), Playback: -109dB
Sampling, Playback: 44.1kHz, 48kHz
PCM, Playback: Up to 384kHz/32bit
Recording Dynamic range: 109dB
Sampling, Record: Up to 192kHz/24bit
Total Harmonic Distortion + Noise (THD+N), Record: -103dB
Audio playback: 34mW for high performance mode, 6mW low power mode
Low power voice activation: 0.65mA