Active sound synthesis method for vehicle

Abstract

The invention discloses an active sound synthesis method for a vehicle. The method comprises the following steps: collecting all sounds of a real vehicle of a target vehicle model under different working conditions; extracting order sound characteristics of all sounds, enhancing or weakening the order sound characteristics, and selecting a sound scheme conforming to a vehicle style as a synthetic sound; performing sound parameterization processing on the synthesized sound; the rotating speed, the speed and the accelerator pedal opening degree of the vehicle are obtained; constructing a sound database in which the sound parameterized ACD file is in one-to-one correspondence with the vehicle rotating speed, the vehicle speed and the accelerator pedal opening parameters; the sound database is implanted into the whole vehicle, the rotating speed, the vehicle speed and the accelerator pedal opening parameter signals output by the vehicle are matched with the sound parameterization ACD files in the sound database, then the corresponding sound parameterization ACD files are restored into audio streams in real time, and a vehicle loudspeaker is driven to emit the audio streams. The sound synthesized by the method is good in coherence, good in listening feeling, natural and real, multiple in style type and high in sound quality.

Description

technical field [0001] The invention belongs to the technical field of vehicle active sounds, in particular to a vehicle active sound synthesis method. Background technique [0002] Due to the lack of popularization of electronic control systems and the limitation of technical realization conditions in traditional automobiles, the notification sounds and warning sounds of on-board equipment are mostly simple mechanical sounds issued by simple buzzers and mechanical relays of instruments and meters. With the upgrading of user consumption, OEMs and design units have further improved the sound quality requirements of the whole vehicle. The simple mechanical prompt sound of traditional instruments and meters can no longer meet the requirements. At this stage, the design and evaluation of sound is based on sound quality. The improvement of the vehicle has put forward new requirements; the sound quality design of the vehicle has also become a key design element of the vehicle desi...

AI Technical Summary

Problems solved by technology

[0002] Due to the lack of popularization of electronic control systems and the limitation of technical realization conditions in traditional automobiles, the notification sounds and warning sounds of on-board equipment are mostly simple mechanical sounds issued by simple buzzers and mechanical relays of instruments and meters. With the upgrading of user consumption, OEMs and design units have further improved the sound quality requirements of the vehicle. The simple mechanical prompt sound of traditional instruments and meters can no longer meet the requirements. At this stage, the design and evaluation of sound is based on sound quality. The improvement of the vehicle has put forward new requirements; the sound quality design of the vehicle has also become the key design element of the vehicle design at the present stage

[0003] In order to improve the sound quality, the existing method is to cut the sound into small fragments and then perform smoothing processing, so that the obtained sound is prone to faults and the sense of hearing is not good

At the same time, the sound of the current design is mainly synthesized sound with enhanced engine sound or exhaust sound, the sound style is not rich enough and the interest is low

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