Qualcomm Aqstic™ Audio Codec
The Qualcomm Aqstic audio codec (WCD9341) supports popular voice UIs is designed to allow devices to have always-on and always-listening capabilities at both very low power and high-resolution playback standards. WCD9341 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 native Direct-Stream Digital (DSD) 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.
WCD9341 and Qualcomm Aqstic are products of Qualcomm Technologies, Inc. and/or its subsidiaries.
General Audio
Voice Services Support: Amazon Alexa Voice Service, Baidu DuerOS, Microsoft Cortana, Google Assistant
Audio Playback
Playback Dynamic Range: 130dB
Total Harmonic Distortion + Noise (THD+N), Playback: -109dB
Sampling, Playback: 44.1kHz, 48kHz
PCM, Playback: Up to 384kHz/32bit
Native DSD support: DSD64, DSD128
Additional Playback Features: DXD support, DoP Support (DSD over PCM)
Audio Recording
Total Harmonic Distortion + Noise (THD+N), Record: -103dB
Sampling, Record: Up to 192kHz/24bit
Recording Dynamic range: 109dB
Power Consumption
Audio playback: 34mW for high performance mode, 6mW low power mode
Low power voice activation: 0.65mA