Method, system and computer program for the acoustic analysis of a machine
AssigneeSnecma
InventorsWilliam Bense, Jérôme Lacaille, Valerio Gerez
Life of this patent
Estimating the term…
Abstract
A method for the acoustic analysis of a machine (M) including the acquisition of at least one acoustic signal supplied by at least one microphone (7) positioned in the machine, characterized in that it comprises the following steps: separation of at least one acoustic signal into a plurality of sound sources, the signal being modelled as a mixture of components, each one corresponding to a sound source; for at least one separated sound source, determination of a characteristic acoustic signature; comparison of at least one characteristic acoustic signature with at least one reference acoustic signature recorded in a reference database (5).
Claims11
1-10. (canceled)
A method for the acoustic analysis of a machine including a step of acquiring at least one acoustic signal supplied by at least one microphone positioned in the machine, wherein the method further comprises the steps of:
- separating of the at least one acquired acoustic signal into a plurality of sound sources, said at least one acquired acoustic signal being modelled as a mixture of components, each one corresponding to a sound source;
- for at least one of the separated sound sources, determining a characteristic acoustic signature;
- comparing the at least one characteristic acoustic signature with at least one reference acoustic signature recorded in a reference database.
A system for the acoustic analysis of a machine, including means for acquiring at least one acoustic signal supplied by at least one microphone positioned in the machine, and a reference database in which is recorded at least one reference acoustic signature, the system further comprising:
- a module for separating sources configured to separate the at least one acoustic signal into a plurality of sound sources, said at least one acoustic signal being modelled as a mixture of components each one corresponding to a sound source;
- a module for determining an acoustic signature configured to determine at least one characteristic acoustic signature of at least one of the separated sound source;
- a module for comparing acoustic signatures configured to compare at least one characteristic acoustic signature with at least one reference acoustic signature recorded in the reference database.
Dependencies are inferred from the claim text.