Abstract: The disclosure relates to a multi-channel in-vehicle sound system, comprising: an audio processing device, a power amplifier, and a plurality of speakers, wherein the plurality of speakers comprise: a central speaker arranged in the center of the front of a vehicle cabin; a left speaker arranged in the left front of the vehicle cabin; a right speaker arranged in the right front of the vehicle cabin; a left surround speaker arranged on the left of the vehicle cabin; a right surround speaker arranged on the right of the vehicle cabin; a left front 3D speaker and a right front 3D speaker arranged on two sides of a roof and corresponding to the positions of front seats. for any one of the plurality of speakers, an azimuth compensation for the speaker is made by means of the speakers located around the speaker.

Abstract: The disclosure relates to a control method for a vehicle-mounted wireless charger, a vehicle-mounted wireless charger, and a vehicle. The vehicle-mounted wireless charger has a fan, and the control method includes: establishing a functional relationship between a vehicle speed of a vehicle and a duty cycle of the fan; detecting a real-time vehicle speed of the vehicle when the wireless charger charges a device to be charged and the fan is turned on; and determining and adjusting the duty cycle of the fan based on the real-time vehicle speed and the functional relationship, to control noise of the vehicle-mounted wireless charger. The vehicle of the disclosure may effectively control the noise of the vehicle-mounted wireless charger using the control method, thereby improving the NVH performance of the vehicle and driving experience of a user.