Sound production device, display system and sound production method of sound production device

Abstract

The invention provides a sound production device, a display system and a sound production method of the sound production device, belongs to the technical field of display, and can solve the problems that the sound production orientation effect of the existing sound production device is poor and the sound production orientation cannot be automatically changed along with the change of a target direction. The sound production device comprises a plurality of ultrasonic transducers, the ultrasonic transducers can form at least one sound production unit, and each sound production unit comprises twoultrasonic transducers; One ultrasonic transducer in each sound production unit is used for transmitting first ultrasonic waves, and the other ultrasonic transducer in each sound production unit is used for transmitting second ultrasonic waves; The sound production control unit is configured to determine a target direction and output a direction instruction to the motion unit according to the target direction; And the motion unit is configured to adjust the sound production direction of the ultrasonic transducers according to the direction instruction, so that the two ultrasonic transducers ofeach sound production unit generate sound towards the target direction and then generate difference frequency sound waves in an audible frequency range in the target area.

Description

technical field [0001] The invention belongs to the field of display technology, and in particular relates to a sounding device, a display system and a sounding method. Background technique [0002] The traditional sound generating device directly vibrates the air molecules through the horn to produce sound, and the sound wave propagates in all directions, and the sound field of the sound wave is approximately spherical. However, some of the directions in which the sound waves from the sound generating device can be received are not the target direction (an area where the user expects to receive the sound waves). Therefore, the traditional sound emitting device has at least the following problems: on the one hand, noise pollution is generated in non-target directions; on the other hand, it is not conducive to protecting the personal privacy of users. [0003] Directional sound generation can solve the above problems very well. The directional sound generation here means tha...

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the problem that the existing sounding orientation effect is poor, and the sounding direction of the sounding unit cannot follow the change of the target direction, and provides a sounding device, a display system and a sounding device with good directional effect, which can automatically change the sounding direction following the change of the target direction Sounding method of the device

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