An automotive cabin is much smaller than a typical room and contains a combination of reflective and absorptive materials in proximity. As a result, the acoustic response within the cabin sound is initially dense but decays quickly. This creates a dry, unnatural, and less immersive sound field as compared to typical room environments. One approach to address this phenomenon has been to equalize the acoustics of the vehicle cabin and/or introduce artificial reverberation that better matches the desired acoustic properties. However, it is challenging to fully neutralize the acoustics of the cabin due to a dependency on head position and the non-minimum phase behavior within the space. This paper describes a more practical method of morphing the acoustics of the cabin to that of a more desirable space by integrating the reverberation decay characteristics of the vehicle and the desired room through cross-analysis, energy normalization, and frequency spectrum equalization.
https://www.aes.org/e-lib/browse.cfm?elib=22264
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