Active noise control simulated noise audio output for active noise control testing

A vehicle comprising:

• a passenger compartment;
• an engine and/or powertrain producing noise that is audible in the passenger compartment when the engine and/or powertrain is running;
• and
• an active noise control arrangement, including:
• a first loudspeaker disposed within a passenger compartment of the vehicle;
• a processing device configured to receive audio content and transmit an audio signal to the first loudspeaker dependent upon the audio content;
• a microphone disposed within the passenger compartment and configured to:
• convert the sound from the first loudspeaker and the noise within the passenger compartment into a microphone signal;
• and
• transmit the microphone signal to the processing device, wherein the processing device modifies the audio signal such that the audio signal attenuates the noise in the passenger compartment;
• a second loudspeaker;
• and
• a vehicle processor configured to:
• receive real time dynamic vehicle operational parameter data while the engine is running, the received dynamic vehicle operational parameter data being indicative of a current operating condition of the engine;
• and
• transmit a simulated noise signal to the second loudspeaker for use in testing effectiveness of the active noise control arrangement in attenuating noise when the engine and/or powertrain is not running and not producing noise, the simulated noise signal being dependent upon the dynamic vehicle operational parameter data.

A vehicle comprising:

• a passenger compartment;
• an engine and/or powertrain producing noise that is audible in the passenger compartment when the engine and/or powertrain is running;
• and
• an active noise control arrangement, including:
• a first loudspeaker disposed within a passenger compartment of the vehicle;
• a processing device configured to receive audio content and transmit an audio signal to the first loudspeaker dependent upon the audio content;
• a microphone disposed within the passenger compartment and configured to:
• convert the sound from the first loudspeaker and the noise within the passenger compartment into a microphone signal;
• and
• transmit the microphone signal to the processing device, wherein the processing device modifies the audio signal such that the audio signal attenuates the noise in the passenger compartment;
• a second loudspeaker;
• and
• a vehicle processor configured to:
• receive an external signal from a source external to the vehicle engine, the external signal being dependent upon actual dynamic vehicle operational parameter values;
• and
• transmit a simulated noise signal to the second loudspeaker for use in testing effectiveness of the active noise control arrangement in attenuating noise when the engine and/or powertrain is not running and not producing noise, the simulated noise signal being dependent upon the external signal.