System and method for controlling noise cancellation systems in vehicles

A circuit, comprising:

• an adaptive noise classifier configured to receive a plurality of audio signals from a plurality of audio-capturing devices of a vehicle and determine a first acoustic state of the vehicle based on the plurality of audio signals;
• and
• a controller that is coupled to the adaptive noise classifier, wherein the controller is configured to:
• receive status data indicative of one or more functional attributes of the vehicle;
• determine, based on the first acoustic state of the vehicle and the status data, a second acoustic state of the vehicle, wherein the second acoustic state is an updated version of the first acoustic state;
• and
• control an operational state of each of a plurality of noise cancellation systems of the vehicle based on the second acoustic state of the vehicle;
• wherein the adaptive noise classifier has a training phase and a deployment phase associated therewith, wherein during the training phase, the adaptive noise classifier is further configured to generate a plurality of model parameters based on a plurality of training signals, and wherein during the deployment phase, the adaptive noise classifier determines the first acoustic state of the vehicle based on the plurality of model parameters and the plurality of audio signals;
• wherein during the training phase, the adaptive noise classifier is further configured to:
• receive the plurality of training signals, with each training signal being indicative of an audio associated with the vehicle;
• extract a first plurality of features from each training signal, wherein the first plurality of features comprise at least one of a group consisting of a time period, a measure of periodicity, a spectral envelope, one or more cepstral attributes, and one or more spectral band energy levels associated with the corresponding training signal;
• and
• process the first plurality of features of each training signal of the plurality of training signals to generate the plurality of model parameters.

A circuit, comprising:

• an adaptive noise classifier configured to receive a plurality of audio signals from a plurality of audio-capturing devices of a vehicle and determine a first acoustic state of the vehicle based on the plurality of audio signals;
• and
• a controller that is coupled to the adaptive noise classifier, wherein the controller is configured to:
• receive status data indicative of one or more functional attributes of the vehicle;
• determine, based on the first acoustic state of the vehicle and the status data, a second acoustic state of the vehicle, wherein the second acoustic state is an updated version of the first acoustic state;
• and
• control an operational state of each of a plurality of noise cancellation systems of the vehicle based on the second acoustic state of the vehicle;
• wherein the adaptive noise classifier has a training phase and a deployment phase associated therewith, wherein during the training phase, the adaptive noise classifier is further configured to generate a plurality of model parameters based on a plurality of training signals, and wherein during the deployment phase, the adaptive noise classifier determines the first acoustic state of the vehicle based on the plurality of model parameters and the plurality of audio signals;
• wherein during the deployment phase, the adaptive noise classifier is further configured to:
• filter the plurality of audio signals received from the plurality of audio-capturing devices;
• and
• extract a second plurality of features from each audio signal of the plurality of audio signals, wherein the second plurality of features comprise at least one of a group consisting of a time period, a measure of periodicity, a spectral envelope, one or more cepstral attributes, and one or more spectral band energy levels associated with the corresponding audio signal, and wherein the first acoustic state of the vehicle is determined based on the second plurality of features of each audio signal of the plurality of audio signals and the plurality of model parameters.

A circuit, comprising:

• an adaptive noise classifier configured to receive a plurality of audio signals from a plurality of audio-capturing devices of a vehicle and determine a first acoustic state of the vehicle based on the plurality of audio signals;
• and
• a controller that is coupled to the adaptive noise classifier, wherein the controller is configured to:
• receive status data indicative of one or more functional attributes of the vehicle;
• determine, based on the first acoustic state of the vehicle and the status data, a second acoustic state of the vehicle, wherein the second acoustic state is an updated version of the first acoustic state;
• and
• control an operational state of each of a plurality of noise cancellation systems of the vehicle based on the second acoustic state of the vehicle;
• wherein the first acoustic state corresponds to one of a group consisting of (i) the vehicle moving with a plurality of windows thereof closed and (ii) the vehicle moving with one or more windows, of the plurality of windows, open, and
• wherein the second acoustic state corresponds to one of a group consisting of (i) the vehicle moving at a reference speed with the plurality of windows closed and presence of a voice activity therein, (ii) the vehicle moving at the reference speed with the plurality of windows closed and absence of the voice activity therein, (iii) the vehicle moving at the reference speed with the one or more windows open and the presence of the voice activity therein, and (iv) the vehicle moving at the reference speed with the one or more windows open and the absence of the voice activity therein;
• wherein the plurality of noise cancellation systems comprise an engine noise cancellation system for an engine noise of the vehicle, a road noise cancellation system for a road-tire interaction noise of the vehicle, and an active noise cancellation system for one or more active noises in the vehicle that hamper the voice activity therein, and wherein each of the engine noise cancellation system, the road noise cancellation system, and the active noise cancellation system is controlled based on the second acoustic state.

A vehicle control method, comprising:

• receiving, by an adaptive noise classifier, a plurality of audio signals from a plurality of audio-capturing devices of a vehicle;
• determining, by the adaptive noise classifier, a first acoustic state of the vehicle based on the plurality of audio signals;
• receiving, by a controller, status data indicative of one or more functional attributes of the vehicle;
• determining, by the controller, based on the first acoustic state of the vehicle and the status data, a second acoustic state of the vehicle, wherein the second acoustic state is an updated version of the first acoustic state;
• and
• controlling, by the controller, an operational state of each of a plurality of noise cancellation systems of the vehicle based on the second acoustic state of the vehicle;
• wherein the plurality of noise cancellation systems comprise an engine noise cancellation system for an engine noise of the vehicle, a road noise cancellation system for a road-tire interaction noise of the vehicle, and an active noise cancellation system for one or more active noises in the vehicle that hamper the voice activity therein, and wherein each of the engine noise cancellation system, the road noise cancellation system, and the active noise cancellation system is controlled based on the second acoustic state.