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.


General Audio

Voice Services Support: Amazon Alexa Voice Service, Microsoft Cortana, Baidu DuerOS, 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

Audio Recording

Recording Dynamic range: 109dB

Sampling, Record: Up to 192kHz/24bit

Total Harmonic Distortion + Noise (THD+N), Record: -103dB

Power Consumption

Audio playback: 34mW for high performance mode, 6mW low power mode

Low power voice activation: 0.65mA