Cerence EVD
Emergency Vehicle Detection
Detection when it’s critical
Every driver has experienced a moment of panic upon hearing or seeing anapproaching emergency vehicle, especially if he or she was caught off guard
when distracted by loud music, a conference call, or chatter in the backseat.
Safer, more enjoyable experience• Delivers safety for first responders and drivers• Reduces driver stress• Leverages Cerence Drive speech processing
tech

Tested, trusted technology• Detects 500+ sirens globally• Range: 300 meters via interior mics; 600+ metersexterior• Automatically alerts driver audibly and visually

The growing presence of smart technology in cars presents the opportunity to deliver safer, more enjoyable rides. And drivers aredemanding this—According to a recent survey by Cerence of 1,500+ U.S. consumers, nearly half of respondents said they arelooking for more assistance during stressful driving situations.
Cerence Emergency Vehicle Detection (EVD) integrates with the in-car assistant to alert drivers of approaching emergency
vehicles so they can adapt their driving accordingly. It helps to ensure that drivers remain safe and informed on the road, a criticalpiece of the in-car experience as vehicles become increasingly autonomous.

Saluting safety,
while reducing stress

AI for a World in Motion©2024©2024 Cerence.
Cerence. AllAll rights
rights reserved.
reserved

Cerence EVD

Seamless listening and alerting technology
Cerence EVD can be implemented without the need for additional hardware as
it uses existing microphones that are part of the vehicle’s interior design. It works
by utilizing the distinct sound structure inherent to emergency siren signals toachieve reliable recognition of the source and the direction from which the siren isapproaching. This includes varying types of sirens from various emergency vehicles(fire trucks, ambulances, police cars, etc.) from multiple countries, accounting fordifferent styles of sirens.
Sound cancellation and in-car alerts
Once a siren is identified, the volume of the radio or other media inside the vehicle
is automatically lowered, and the driver is notified via the car’s visual and audio
infotainment system. Additionally, by using acoustic echo cancellation to remove
the music playback from the microphone signals, Cerence ensures reliable siren
detection and quick driver notification, even if a driver is listening to a song thatincludes sirens or other sounds utilized by emergency vehicles.
Delivering safer, more enjoyable rides
Cerence EVD is part of the Cerence Drive solutions portfolio, the industry’s mostintuitive automotive voice assistants in the market. As part of our speech processing
technology that powers Cerence EVD, we deliver robust voice user interfaces,
speech communication with superior audio quality, and improved road safety. Thisis increasingly critical as many countries around the world legally require that drivers
give way to emergency vehicles that use acoustic and/or light warning signals, as wellas with the advent of autonomous vehicles, which will demand such technology toensure safety.
Robust technology for worldwide use
Cerence EVD supports all relevant siren types that are used throughout the world:
multitone, wail, yelp, phaser/piercer, warble & whoop. The technology can detect
500+ sirens from more than 150 siren generators that have been collected in 15
different countries, offering a low false alarm rate. Siren signals can be detected up
to 300 meters using interior microphones and up to 600+ meters with exterior mics,
depending on velocity and driving noise.

AI for a World in Motion©2024 Cerence. All rights reserved.