ACOUSTIC APPARATUS WITH DUAL MEMS DEVICES

摘要

In accordance with one aspect of the disclosure, an acoustic apparatus is provided including a first transducer, a second transducer, a signal generator coupled to the first transducer, and a proximity detection module coupled to the second transducer. A buffering module is coupled to the first and second transducers and is configured to process analog signals received from the second transducer.

主权项

1. An acoustic apparatus, comprising:
a first transducer; a second transducer; a signal generator coupled to the first transducer; a proximity detection module coupled to the first and second transducers; a buffering module coupled to the second transducer, the buffering module configured to process analog signals received from the second transducer; wherein in a first mode, the signal generator drives the first transducer to produce ultrasonic signals; wherein in a second mode, the ultrasonic signals are reflected by an object and returned as reflected ultrasonic signals to the second transducer; wherein in the a third mode, the reflected ultrasonic signals are processed by the proximity detection module to obtain a distance parameter, the distance parameter indicative of a distance between the apparatus and the object; wherein in a fourth mode, the second transducer receives human-hearable audio signals.