Whelen Engineering Compnay, Inc.

Brandon Conlon

Caleb Garrett

David Dornfeld

A system, method and storage medium for providing an emergency alert includes reading tone, using one or more processors, information and volume level information corresponding to an emergency sound generator from memory coupled to the one or more processors; and controlling, using the one or more processors, an output sound of the emergency sound generator based on the tone information and volume level information. The tone information includes data of frequency variation over a predetermined period, and the volume level information includes data of volume level variation over the predetermined period.

Volume scaling and synchronization of tones

A system, method and storage medium for synchronization between nodes includes transmitting, by a first node, a first synchronization message; determining, by the first node, a first time at which the first synchronization message is transmitted; transmitting, by the first node, a second synchronization message containing a tx timestamp corresponding to the first time; receiving, by a second node, the first synchronization message from the first node; determining, by the second node, a second time at which the first synchronization message is received; storing, by the second node, a rx timestamp corresponding the second time; receiving, by the second node, the second synchronization message from the first node; determining, by the second node, a current local time at which the second synchronization message is received; reading, by the second node, the tx timestamp in the first synchronization message; adjusting, by the second node, the current local time of the second node by adding a difference between the tx timestamp and the rx timestamp; and setting, by the second node, the adjusted current local time as a global time.

Synchronization between devices in emergency vehicles

A system, method and storage medium for noise cancellation in a vehicle includes determining a waveform of a first sound wave at a first location, calculating another waveform of the first sound wave at a second location of an operator based on the waveform of the first sound wave at the first location and a first distance between the first location and the second location, generating at least one control signal based on the determined another waveform of the first sound wave at the second location, and generating a second sound wave based on the at least one control signal. A waveform of the second sound wave are formed to cancel out the first sound wave at the second location. The first sound wave is generated by a noise source.

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Bristol, CT, United States of America

Brandon Conlon