Dynamic Engine Harmonic Enhancement Sound Stage

摘要

A method to produce a dynamic sound stage for engine harmonic enhancement (EHE). Dynamic refers to the ability to position the sound stage at different positions as the engine operates at various RPMs and load. In order to control the sound stage width, a phase difference can be introduced between a first audio channel (e.g., a left audio channel) and second audio channel (e.g., a right audio channel). In the most general case, the phase difference can be introduced per harmonic per RPM. In this approach, the phase difference can be adjusted such that a vehicle occupant will perceive each harmonic signal to have a particular width. This width can be adjusted independently per RPM regions by tuning the per harmonic phase difference.

主权项

1. A method comprising:
generating a first channel harmonic enhancement signal comprising a first plurality of engine harmonic enhancement signal components; generating a second channel harmonic enhancement signal comprising a second plurality of engine harmonic enhancement signal components; and controlling one or more aspects of a sound stage in a vehicle cabin by introducing, on a per harmonic basis, one or more differences between the first channel harmonic enhancement signal and the second channel harmonic enhancement signal.