A system includes a processor for a first vehicle and a memory. The memory stores instructions executable by the processor to, upon determining audio fault of the first vehicle, identify a second vehicle for sound-sharing based on a sound output of the second vehicle, and form a platoon with the second vehicle based on the sound output.

A sound control module is configured to, based on a type of road over which a vehicle is traveling and a smoothness of the road, at least one of: determine a first frequency and a first increase at which to increase a first magnitude of a microphone signal; and determine a second frequency and a first decrease at which to decrease a second magnitude of the microphone signal. An audio driver module is configured to: receive the microphone signal from a microphone of the vehicle; generate an adjusted microphone signal by at least one of: increasing the first magnitude of the microphone signal at the first frequency based on the first increase; and decreasing the second magnitude of the microphone signal at the second frequency based on the first decrease; and apply power to a speaker of the vehicle based on the adjusted microphone signal.

A sound control module is configured to, based on a type of road over which a vehicle is traveling and a smoothness of the road, at least one of: determine a first frequency and a first increase at which to increase a first magnitude of a microphone signal; and determine a second frequency and a first decrease at which to decrease a second magnitude of the microphone signal. An audio driver module is configured to: receive the microphone signal from a microphone of the vehicle; generate an adjusted microphone signal by at least one of: increasing the first magnitude of the microphone signal at the first frequency based on the first increase; and decreasing the second magnitude of the microphone signal at the second frequency based on the first decrease; and apply power to a speaker of the vehicle based on the adjusted microphone signal.

An electric vehicle emulation system and method is provided using at least one force generator (FG) to induce a vibration emulating the feel of an internal combustion engine in an all-electric, hybrid-electric, or alternative fuel vehicle. The FG may be a circular FG (CFG), a lincar FG (LFG), or a combination of both CFGs and LFGs.

Vehicles can employ onboard telematic monitoring devices to collect vehicle and operation data, such as for improved vehicle fleet management. Such telematic monitoring devices are dependent on power from a vehicle, such that data collection and communication can be interrupted if a telematic monitoring device is disconnected or has a poor connection. The present disclosure relates to battery devices, which provide power to telematic devices as needed in order to maintain data collection and communication, or other more limited functionality. The present disclosure also relates to systems including battery devices, and methods for operating battery devices.

The operation of a mechatronic system with a power converter is advantageously and flexibly improved with regard to electromagnetic interference emission and acoustics. A regulation of the instantaneous switching frequency is proposed, with the natural variation of the switching frequency of the delta-sigma PWM in the cycle of the fundamental voltage being taken into account, which can achieve advantages in terms of EMC, acoustics and switching losses. The regulation of the instantaneous switching frequency in particular creates a possibility of generating a specific, calibratable noise with the underlying drive. It can be used to generate a brand-specific, recognizable noise of a vehicle and also to meet normative requirements for the acoustic perceptibility of purely electric vehicles (BEV).

A vehicle including a powertrain system that includes an electric machine electrically connected to a power inverter is described, wherein the powertrain system is operative in an electric vehicle mode to generate propulsion torque. A method for controlling the powertrain system includes determining a vehicle speed, and determining a preferred audible sound to be generated by the powertrain system when operating in the electric vehicle mode at the vehicle speed. A control signal for the power inverter is determined, and is associated with operating the powertrain system in the electric vehicle mode at the vehicle speed. The preferred audible sound is incorporated into the control signal for the power inverter, and the power inverter is controlled to operate the electric machine employing the control signal and the preferred audible sound.

Method and apparatus are disclosed for audio of external speakers of vehicles based on ignition switch positions. An example vehicle includes an exterior surface, an external speaker positioned along the exterior surface, an ignition switch, and a speaker controller. The speaker controller is to determine, in response to the ignition switch being in an on position, whether to present simulated engine noise via the external speaker and present, in response to the ignition switch being in an accessory position, media audio via the external speaker.

This invention concerns a sound and performance emulator (1) for an electric propulsion vehicle (100) with a first sensor (2) to emit a clutch signal (2a) relative to the position of a clutch (101) of the electric propulsion vehicle (100); a second sensor (3) to emit a gear signal (3a) relative to the position of a gear-switch (102) of the electric propulsion vehicle (100); a control unit (4) which receives an acceleration signal (5) relating to an accelerator position (103) of the electric propulsion vehicle (100); a vehicle speed signal (6) and/or an engine revolutions signal (7) relating to the engine revolutions (RpmExt) of the electric motor (104); the clutch signal (2a); and the gear signal (3a). The control unit (4) calculates a simulated engine revolutions value (RpmFinal) and a simulated gear inserted value (GearInserted) of a simulated endothermic combustion vehicle. The control unit (4) provides a requested simulated torque value and/or an output throttle signal (OutputThrottle) to be sent to the electric propulsion vehicle (100) to control it.

In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be a sound experience system in an electric vehicle. The sound experience system determines a list of sound profiles from one or more sound experience files. Each of the sound profiles specifies a plurality of sounds for providing a sound experience. The sound experience system receives an indication of a first sound profile from the list of sound profiles. The sound experience system further determines a condition of the electric vehicle; The sound experience system then selects a sound of the first sound profile based on the condition. The sound experience system generates a sound signal according to the selected sound.