Zoox, Inc.

David Donald Logan

Xuan Zhong

Venkata Subrahmanyam Chandra Sekhar Chebiyyam

Nam Gook Cho

Shaminda Subasingha

Nehemia Girma Terefe

Arvind Pattabhiraman

A method includes receiving an audio signal from a microphone and processing the audio signal to identify a signal component that is associated with a resonance of at least part of a microphone unit disposed on a vehicle. The microphone unit includes the microphone and a protective element arranged to shield the microphone from environmental material. The method includes determining, based at least in part on the identified signal components, a characteristic indicative of the protective element having shielded the microphone from environmental material.

Rain detection using exterior microphones

Techniques for cleaning and calibrating a microphone are discussed herein. For example, a computing device can implement a microphone component to operate a speaker adjacent to a microphone to cause removal of an obstruction (e.g., rain, mud, dirt, dust, snow, ice, animal droppings, etc.) on or near the microphone. The microphone component can also or instead cause the speaker to output a frequency for testing operation of the microphone. By implementing the cleaning and/or calibrating techniques described herein, foreign particle(s) of varying size and type can be dislodged from an area near the microphone to improve performance of the microphone.

Microphone cleaning and calibration

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Morgan Hill, CA, United States of America

David Donald Logan