高通手机芯片的关键词唤醒从 Snapdragon 835 开始就提供硬件级的支持,后面越来越强大:
https://www.qualcomm.com/products/features/voice-assist835 的语音唤醒功能待机状态功耗极低:Low power voice activation: 0.65 mA
到了 855 ,除了支持简单地唤醒,Hexagon 引擎还有更厉害的功能:
Hexagon Voice Assistant accelerator supports two wake words simultaneously (Google Assistant, Amazon Alexa, Baidu, Cortana)
Aqstic offers a hardware-based voice assistant accelerator for always-on echo cancellation and noise suppression, plus up to 4 mic far-field mic support for better voice recognition in tough conditions
此外配合 Secure Processing Unit 还能实现 Biometric Authentication (Voice),用于声音解锁,声纹识别甚至可以用于支付