One example system for detecting an emergency siren comprises a microphone device, a band pass filter operably coupled to the microphone device and configured to filter sound data from the microphone device to produce filtered sound data, a phase lock loop circuit configured to phase filter the filtered sound data to produce phase filtered data, and a processor configured to determine a presence of a siren signal from the phase filtered data.
Phase lock loop siren detection
2023-08-15
Patent
Electronic Resource
English
DETECTION AND CLASSIFICATION OF SIREN SIGNALS AND LOCALIZATION OF SIREN SIGNAL SOURCES
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