System and method for acoustic detection of emergency sirens
AssigneeNuance Communications, Inc.
InventorsMarkus BUCK, Julien PREMONT, Friedrich FAUBEL
Life of this patent
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Abstract
A system and method for detecting multi-tone sirens despite environmental noises that may be present obtains a microphone input signal, applies, in real time, a time-frequency analysis to the microphone input signal to determine a time-frequency representation, provides at least one multi-tone model that has a plurality of tone duration patterns, performs multi-tone siren detection on the time-frequency representation, the detection based on the at least one multi-tone model and factoring of doppler shifts, and generates a detection result that can be used in systems for automated vehicles.
Claims18
A computer-implemented method comprising:
- obtaining, by a computing device, a microphone input signal;
- applying in real time, by the computing device, a time-frequency analysis in order to obtain a time-frequency representation of the microphone input signal;
- providing, by the computing device, at least one multi-tone model that has a plurality of tone duration patterns;
- performing, by the computing device, multi-tone siren detection on the time-frequency representation of the signal, wherein the multi-tone detection is based on the at least one multi-tone model and factoring of doppler shifts;
- and
- generating, by the computing device, a detection result.
A computer program product residing on a non-transitory computer readable storage medium having a plurality of instructions stored thereon which, when executed across one or more processors, causes at least a portion of the one or more processors to perform operations comprising:
- obtaining a microphone input signal;
- applying in real time a time-frequency analysis in order to obtain a time-frequency representation of the microphone input signal;
- providing at least one multi-tone model that has a plurality of tone duration patterns;
- performing multi-tone siren detection on the time-frequency representation of the signal, wherein the multi-tone detection is based on the at least one multi-tone model and factoring of doppler shifts;
- and
- generating a detection result.
A computing system including one or more processors and one or more non-transitory memories storing program instructions that, when executed, perform operations comprising:
- obtaining a microphone input signal;
- applying in real time a time-frequency analysis in order to obtain a time-frequency representation of the microphone input signal;
- providing at least one multi-tone model that has a plurality of tone duration patterns;
- performing multi-tone siren detection on the time-frequency representation of the signal, wherein the multi-tone detection is based on the at least one multi-tone model and factoring of doppler shifts;
- and
- generating a detection result
Dependencies are inferred from the claim text.