Sound excitation generator

Abstract

The invention discloses a sound excitation generator, which comprises: an audio signal generator used for generating a required main sound field audio signal, wherein the audio signal generator is an inner sound field generator and an outer sound field generator with a multi-layer sound field structure; a controller which is used for adjusting the frequency and the power of the audio signal of the main sound field and the amplification factor of the audio signal; and a display device which is used for displaying the frequency of the current audio signal, the phase difference or frequency difference of the outer sound field and signal output power information. By adopting the technical scheme of the invention, the directional transmission problem of sound waves is solved, so that the sound waves are not diverged when being transmitted in a medium; the problem of confidential transmission of core sound carrier signals in sound signals adopted in the communication field is solved. The directional emission problem of sound signals adopted in the detection field is solved, and sound detection can be carried out more accurately.

Description

technical field [0001] The invention belongs to the technical field of sound processing, in particular to an excitation sound generator. Background technique [0002] As we all know, laser light sources have more excellent features than ordinary light sources, such as good directivity, not easy to diverge, high brightness, high coherence, single frequency and many other characteristics. Both sound and light have wave properties, but they have essential differences. Light is an electromagnetic wave, which is a transverse wave; sound wave is a mechanical wave, which is a longitudinal wave. In general media, the speed of light is much faster than the speed of sound, and light can travel in a vacuum, but sound cannot. [0003] Due to the essential difference between sound waves and light waves, the principles of their generation and propagation are very different. The emergence of lasers has led to rapid development in many fields such as optical communication, optical measure...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide an acoustic generator to solve the problem of directional transmission of sound waves, so that the sound waves do not diverge during transmission in the medium; to solve the problem of confidential transmission of the core acoustic carrier signal in the sound signal used in the communication field ; Solve the problem of directional emission of sound signals in the detection field, and can perform sound detection more accurately

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