A Compound Audio Object (CAO) packages a project with complex signal flow into a single audio object, with clearly defined I/O pins. A custom panel created for the CAO provides user with integrated control interface. The following is a CAO created for Vehicle Noise Compensation and Automatic Level Adjustment (VNC-ALA) as a reference project.
The VNC-ALA feature implements level control based on noise-related vehicle information such as speed, fan and roof status. With a local microphone input streaming cabin noise information, the VNC-ALA CAO processes audio content of entertainment and announcement, continuously calculates and adjusts the necessary gain offset for different frequency bands. Thereby the user is able to seamlessly listen to the sound system regardless of the ambient noise.