System and method for integrated emergency vehicle detection and localization
AssigneeCerence Operating Company
InventorsFriedrich Faubel, Philipp Bulling, Nico Untereiner
Life of this patent
Estimating the term…
Abstract
A siren detector identifies those frequencies at which a siren is active and a localizer localizes the siren based on those frequencies.
Claims16
An apparatus comprising a detector for detecting a siren that is emitted by a siren source located at a particular direction relative to a motor vehicle and a localizer in communication with said detector for estimating said particular direction, said motor vehicle comprising a microphone array having a plurality of microphones, each of which connects to said siren detector, said siren detector being configured to identify those frequencies at which a siren is active and said localizer being configured to estimate said particular direction based on those frequencies,
- wherein the siren comprises recurring lines on a spectrogram, and
- wherein the detector includes a line detector that searches for said recurring lines, or an edge detector that detects edges of lines of said lines in said spectrogram.
An apparatus comprising a detector for detecting a siren that is emitted by a siren source located at a particular direction relative to a motor vehicle and a localizer in communication with said detector for estimating said particular direction, said motor vehicle comprising a microphone array having a plurality of microphones, each of which connects to said siren detector, said siren detector being configured to identify those frequencies at which a siren is active and said localizer being configured to estimate said particular direction based on those frequencies, wherein the siren is represented by lines on the spectrogram and wherein the localizer is configured to localize the siren based on information indicative of the different directions of the lines on the spectrogram, or based at least in part on different directions of those lines that periodically recur on the spectrogram.
An apparatus comprising a detector for detecting a siren that is emitted by a siren source located at a particular direction relative to a motor vehicle and a localizer in communication with said detector for estimating said particular direction, said motor vehicle comprising a microphone array having a plurality of microphones, each of which connects to said siren detector, said siren detector being configured to identify those frequencies at which a siren is active and said localizer being configured to estimate said particular direction based on those frequencies, wherein said localizer is configured to localize the siren at least in part on the basis of cross-phase spectral density information or cross-power spectral density information from different microphones.
Dependencies are inferred from the claim text.