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Active Noise Control (ANC) - Retrofit 2019 Titanium ?


Iroga

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  • 1004ron changed the title to Active Noise Control (ANC) - Retrofit 2019 Titanium ?

ANC (if equipped)

 

ANC is an audio system feature that reduces the level of occasional low frequency engine noises which compete with audio system playback. The system uses 3 microphones, the DACMC (integrated into the ACM) and the audio system speakers.

 

The ANC feature reduces the level of occasional low frequency engine noise which competes with audio system playback.

 

The DACMC, built in to the ACM, determines the noise frequency to be canceled from the sound present inside the vehicle and by using engine data from the PCM.

 

While the engine is running, the ANC microphones monitor undesired noise in the passenger compartment. The microphones transmit this noise as analog signals to the DACMC inside the ACM. The signals are processed to create an inverted phase sound wave with the same amplitude as the original sound. This noise-canceling sound created by the DACMC is transmitted internally to the ACM outputs and externally to the DSP. The final output by the ACM and the DSP is sent as fluctuating AC voltage to the speakers.

 

ANC Microphones

 

The ANC microphones are connected to the DACMC, integrated into the ACM

 

ACM

 

For vehicles equipped with the ANC, the ACM contains the DACMC. The DACMC carries out noise canceling to reduce cabin noise.

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