A method of analyzing a noise signal, comprising: receiving, via a local engine control unit (ECU), a noise signal sensed by a knock sensor disposed in a reciprocating device; processing the noise signal via at least one of the local ECU, a remote ECU, or an external system, wherein the processing comprises: preconditioning the noise signal to derive a preconditioned noise signal; applying an ADSR envelope to the preconditioned noise signal; extracting tonal information from the preconditioned noise signal; and creating a fingerprint of the noise signal based on the ADSR envelope, the tonal information, or a combination thereof, wherein applying an attack, sustain, decay and release (ADSR) envelope comprises: measuring a first period of time between a start of the preconditioned noise signal and a time at which the preconditioned noise signal reaches a maximum amplitude; measuring a second period of time between the time at which the preconditioned noise signal reaches the maximum amplitude and a second time at which the noise signal runs down to a sustain level; measuring a third period of time during which the preconditioned noise signal sustains; and measuring a fourth period of time during which the preconditioned noise signal runs down from the sustain level to zero, wherein the creating the fingerprint comprises creating the fingerprint via the local ECU and transmitting the fingerprint to the remote ECU, the external system, or a combination thereof. receiving, via a local engine control unit (ECU), a noise signal sensed by a knock sensor disposed in a reciprocating device; processing the noise signal via at least one of the local ECU, a remote ECU, or an external system, wherein the processing comprises: preconditioning the noise signal to derive a preconditioned noise signal; applying an ADSR envelope to the preconditioned noise signal; extracting tonal information from the preconditioned noise signal; and creating a fingerprint of the noise signal based on the ADSR envelope, the tonal information, or a combination thereof, preconditioning the noise signal to derive a preconditioned noise signal; applying an ADSR envelope to the preconditioned noise signal; extracting tonal information from the preconditioned noise signal; and creating a fingerprint of the noise signal based on the ADSR envelope, the tonal information, or a combination thereof, wherein applying an attack, sustain, decay and release (ADSR) envelope comprises: measuring a first period of time between a start of the preconditioned noise signal and a time at which the preconditioned noise signal reaches a maximum amplitude; measuring a second period of time between the time at which the preconditioned noise signal reaches the maximum amplitude and a second time at which the noise signal runs down to a sustain level; measuring a third period of time during which the preconditioned noise signal sustains; and measuring a fourth period of time during which the preconditioned noise signal runs down from the sustain level to zero, measuring a first period of time between a start of the preconditioned noise signal and a time at which the preconditioned noise signal reaches a maximum amplitude; measuring a second period of time between the time at which the preconditioned noise signal reaches the maximum amplitude and a second time at which the noise signal runs down to a sustain level; measuring a third period of time during which the preconditioned noise signal sustains; and measuring a fourth period of time during which the preconditioned noise signal runs down from the sustain level to zero, wherein the creating the fingerprint comprises creating the fingerprint via the local ECU and transmitting the fingerprint to the remote ECU, the external system, or a combination thereof. <EOS>