US 12,609,098 B2 · Audio-signal equalisation device and method for a vehicle using a data communication bus

Abstract

An audio-signal equalisation device for a vehicle using a data communication bus includes a memory storing speed filter data sets comprising triplets associating a speed value and a gain value associated with coefficients for defining a speed masking filter, and functional filter data sets comprising triplets associating an engine or ventilation value and a gain value associated with coefficients for defining an engine or ventilation masking filter. The device further includes a collector receiving parameters accessible on the communication bus and designating the vehicle speed and a functional parameter selected from the vehicle engine speed and a ventilation data set. The device further includes a computer receiving as an input a noise margin value, and the parameters, to derive therefrom a speed filter data set and a functional filter data set and to combine them in a masking equalisation filter to be applied to the audio signal.

Claims19

Dependent claims

An audio-signal equalisation device for a vehicle using a data communication bus, comprising:

a memory configured to store at least one speed filter data set comprising at least one triple associating a speed value and a gain value associated with coefficients for defining a speed masking filter, and at least one functional filter data set comprising at least one triplet associating an engine speed value or a ventilation value and a gain value associated with coefficients for defining an engine or ventilation masking filter,
a collector configured to receive at least two parameters accessible on the communication bus, said parameters designating the speed of the vehicle and at least one functional parameter selected from the group comprising the engine speed of the vehicle and a ventilation data set, and
a computer configured to receive as an input a noise margin value, as well as said at least two parameters accessible on the communication bus, to derive therefrom the at least one speed filter data set and the at least one functional filter data set and to combine the at least one speed filter data set and the at least one functional filter data set in a masking equalisation filter to be applied to the audio signal.

An audio-signal equalisation method for a vehicle using a data communication bus, comprising:

a) storing at least one speed filter data set comprising at least one triplet associating a speed value and a gain value associated with coefficients for defining a speed masking filter, and least one functional filter data set comprising at least one triplet associating an engine speed value or a ventilation value and a gain value associated with coefficients for defining an engine or ventilation masking filter,
b) receiving at least two parameters accessible on the communication bus, said parameters designating the speed of the vehicle and at least one functional parameter selected from the group comprising the engine speed of the vehicle and a ventilation data set, and a noise margin value, and
c) deriving, from the parameters of step b) and the noise margin value, the at least one speed filter data set and the at least one functional filter data set, and combining the at least one speed filter data set and the at least one functional filter data set in a masking equalisation filter to be applied to an audio signal.

Dependencies are inferred from the claim text.

Audio-signal equalisation device and method for a vehicle using a data communication bus

Life of this patent

Audio-signal equalisation device and method for a vehicle using a data communication bus

Life of this patent

Abstract

Claims19