Emergency vehicle audio detection

US11609576B2 · kind B2 · utility

Assignee

• BAIDU USA LLC · US

Inventors

• Qi Luo · Sunnyvale, US
• Kecheng Xu · Sunnyvale, US
• Jinyun Zhou · Sha Tin, CN
• Xiangquan Xiao · Sunnyvale, US
• Shuo Huang · New Taipei, TW
• Jiangtao Hu · Sunnyvale, US
• Jinghao Miao · Sunnyvale, US

Key dates

• Filing date: Dec 5, 2019
• Grant date: Mar 21, 2023
• Expiry date: Mar 25, 2041

Classification

• Technology area (CPC G): Physics
• CPC primary: G08G1/0965
• WIPO field: Control
• WIPO sector: Instruments

Abstract

In one embodiment, a process is performed during controlling Autonomous Driving Vehicle (ADV). Microphone signals sense sounds in an environment of the ADV. The microphone signals are combined and filtered to form an audio signal having the sounds sensed in the environment of the ADV. A neural network is applied to the audio signal to detect a presence of an audio signature of an emergency vehicle siren. If the siren is detected, a change in the audio signature to make a determination as to whether the emergency vehicle siren is a) moving towards the ADV, or b) not moving towards the ADV. The ADV can make a driving decision, such as slowing down, stopping, and/or steering to a side, based on if the emergency vehicle siren is moving towards the ADV.