A method detects presence of a multi-tone siren type in an acoustic signal. The multi-tone siren type is associated with one or more siren patterns, where each siren pattern includes a number of time patterns at corresponding frequencies. The method includes processing a number of frequency components of a frequency domain representation of the acoustic signal over time to determine a corresponding plurality of values. That processing includes determining, for each frequency component, a value characterizing a presence of a time pattern associated with at least one siren pattern. The method also includes processing the values according to the siren patterns to determine a detection result indicating whether the multi-tone siren type is present in the acoustic signal.
SYSTEM AND METHOD FOR ACOUSTIC DETECTION OF EMERGENCY SIRENS
SYSTEM UND VERFAHREN ZUR AKUSTISCHEN DETEKTION VON NOTSIRENEN
SYSTÈME ET PROCÉDÉ POUR LA DÉTECTION ACOUSTIQUE DE SIRÈNES D'URGENCE
2022-11-09
Patent
Elektronische Ressource
Englisch
IPC: | G10L Analyse oder Synthese von Sprache , SPEECH ANALYSIS OR SYNTHESIS / B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion / G05D SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES , Systeme zum Steuern oder Regeln nichtelektrischer veränderlicher Größen / G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS |
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