Patent ID: 8881573

Claim:
A method for detecting wear of a tyre, wherein the tyre includes at least one sonic wear gauge emitting, based on a predetermined radial wear threshold, an acoustic footprint noise that includes a plurality of acoustic footprint elementary frequency components, the method comprising steps of: acquiring an acoustic signal that includes the acoustic footprint noise; enumerating a plurality of series of elementary frequency components, each enumerated series of the enumerated plurality of series forming at least a part of the elementary frequency components of the acoustic signal; selecting an acoustic footprint series from among the enumerated plurality of series, wherein the acoustic footprint series forms at least part of a Dirac comb; determining a local confidence index of the acoustic footprint series; and emitting a tyre wear alert, when a confidence index, which is determined based the local confidence index, is in absolute value at least one of greater than, less than, and equal to a predetermined threshold associated with the confidence index.