Audio control systems and methods for mitigating structural noise borne from tires

    公开(公告)号:US10170096B1

    公开(公告)日:2019-01-01

    申请号:US15800524

    申请日:2017-11-01

    IPC分类号: G10K11/178

    摘要: A Fourier Transform (FT) module configured to determine amplitudes of acceleration at predetermined orders, respectively, by performing a FT on a plurality of values of acceleration associated with a wheel. An order module is configured to identify one of the predetermined orders where one of the amplitudes is greater than a predetermined value and to, based on the one of the amplitudes and a rotational speed of the wheel, determine an order of a frequency corresponding to the rotational speed of the wheel. A sound control module is configured to set characteristics for outputting sound at the order of the frequency corresponding to the rotational speed of the wheel. An audio driver module is configured to, based on the characteristics, apply power to a speaker within a passenger cabin of the vehicle at the order of the frequency corresponding to the rotational speed of the wheel.

    Systems and methods for outputting engine sound when engine is off

    公开(公告)号:US10133535B2

    公开(公告)日:2018-11-20

    申请号:US15430099

    申请日:2017-02-10

    摘要: When the engine is off and not combusting fuel for one of an auto-stop portion of an auto-stop/start event and operation in a sail mode, a selection module sets at least one of: a selected torque based on a pseudo torque output of the engine; and a selected engine speed based on a pseudo engine speed determined for the one of the auto-stop portion of the auto-stop/start event and the operation in the sail mode. A sound control module, based on the at least one of the selected engine speed and the selected torque, sets at least one of: a frequency at which to output a predetermined engine sound; and a magnitude for outputting the predetermined engine sound at the frequency. An audio driver module applies power to at least one speaker of the vehicle to output the predetermined engine sound at the frequency and the magnitude.

    Audio control systems and methods for vehicles with variable compression ratio engines

    公开(公告)号:US10074358B1

    公开(公告)日:2018-09-11

    申请号:US15697876

    申请日:2017-09-07

    IPC分类号: G10K15/02 F02D15/02

    摘要: 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.

    Engine sound enhancement based on vehicle selected mode
    50.
    发明授权
    Engine sound enhancement based on vehicle selected mode 有权
    基于车辆选择模式的发动机声音增强

    公开(公告)号:US09365158B2

    公开(公告)日:2016-06-14

    申请号:US13938799

    申请日:2013-07-10

    摘要: A control system is provided for a vehicle having an engine which transitions between an activated mode and a deactivated mode. The control system includes a vehicle bus transmitting a signal indicating a vehicle selected mode and if the engine is operating in one of the activated mode and the deactivated mode. The control system also includes an engine sound enhancement (“ESE”) module configured to receive the signal. The ESE module is configured to select at least one ESE tone and a set of ancillary tones associated with one or more of the deactivated mode, the activated mode, and an activation transition. The ESE module selects a specific type of ancillary tones based on the vehicle selected mode.

    摘要翻译: 为具有在激活模式和停用模式之间转换的发动机的车辆提供控制系统。 控制系统包括车辆总线,其传输指示车辆选择模式的信号,并且如果发动机以激活模式和停用模式中的一种运行。 控制系统还包括被配置为接收信号的发动机声音增强(“ESE”)模块。 ESE模块被配置为选择至少一个ESE音调和与一种或多种去激活模式,激活模式和激活转换相关联的一组辅助音调。 ESE模块根据车辆选择模式选择特定类型的辅助音调。