公开(公告)号：US10074358B1

公开(公告)日：2018-09-11

申请号：US15697876

申请日：2017-09-07

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Frank C. Valeri ,  Timothy J. Roggenkamp ,  Thomas V. Timmons

IPC: G10K15/02 ,  F02D15/02

CPC classification number: G10K15/02 ,  F02D13/0219 ,  F02D15/02 ,  F02D41/0007 ,  F02D2200/1004 ,  F02M35/1294

Abstract: A sound control module is configured to determine N magnitudes for outputting a predetermined engine sound at N predetermined harmonics of a base frequency, respectively, where N is an integer greater than one. An adjustment module is configured to determine N magnitude adjustments for the N predetermined harmonics, respectively, based on a position of a compression ratio (CR) actuator configured to vary a CR of an engine. The sound control module is further configured to determine N adjusted magnitudes for the N predetermined harmonics based on: the N magnitudes for the N predetermined harmonics, respectively; and the N magnitude adjustments for the N predetermined harmonics, respectively. An audio driver module is configured to apply power to at least one speaker of the vehicle and output the predetermined engine sound based on the N adjusted magnitudes at N frequencies, respectively, corresponding to the N predetermined harmonics of the base frequency.