Simple and convenient loudspeaker

Abstract

The invention relates to the technical field of auxiliary equipment of teaching appliances, and specially relates to a simple and convenient loudspeaker. The simple and convenient loudspeaker has theadvantages of being diversified in the teaching modes, improving the learning interest of students, demonstrating a plurality of properties of sound wave, improving the teaching effect, improving reliability of usage, being convenient for dividing magnitude of sound, improving the experimental effect, and improving practicality. The simple and convenient loudspeaker includes a horn-shaped body, wherein a hollow cavity is arranged in the horn-shaped body; the left end and the right end of the horn-shaped body are respectively provided with a sound inlet and a sound outlet; the simple and convenient loudspeaker also includes an experiment table, a left tuning fork, a right tuning fork, a support, a sound conduction pipe, a threaded rod, a screwed pipe, a baffle plate and a decibel testing instrument; an external screw thread structure is arranged on the outer side wall of the sound conduction pipe; an internal screw thread structure is arranged at the sound inlet of the horn-shaped body;a horizontal slide cavity is arranged in the experiment table; a slide block is arranged in the slide cavity; a standing groove is formed in the middle part of the top end of the slide block; a ballbearing is fixedly arranged in the standing groove; and a bar-shaped through hole which is communicated with the slide cavity is formed in the top end of the experiment table.

Description

technical field [0001] The invention relates to the technical field of attachments of teaching instruments, in particular to a simple loudspeaker. Background technique [0002] As we all know, sound is a wave phenomenon that is generated by the vibration of an object, and then propagates through the medium (air or solid, liquid) and can be perceived by the auditory organs of humans or animals. Vibration (vibration) transmission in the form of sound. Sound is the movement formed by sound waves passing through any material. In physical acoustics teaching, some simple loudspeakers are often used to improve students' understanding of sound. Simple loudspeakers are a kind of auxiliary physics A tool for acoustic teaching, which has been widely used in the field of teaching equipment; the existing simple loudspeaker includes a horn-shaped body, the inside of the body is provided with a cavity, and the left and right ends of the body are respectively provided with sound inlets and ...

AI Technical Summary

Problems solved by technology

[0002] As we all know, sound is a wave phenomenon that is generated by the vibration of an object, and then propagates through the medium (air or solid, liquid) and can be perceived by the auditory organs of humans or animals. Vibration (vibration) transmission in the form of sound. Sound is the movement formed by sound waves passing through any material. In physical acoustics teaching, some simple loudspeakers are often used to improve students' understanding of sound. Simple loudspeakers are a kind of auxiliary physics A tool for acoustic teaching, which has been widely used in the field of teaching equipment; the existing simple loudspeaker includes a horn-shaped body, the inside of the body is provided with a cavity, and the left and right ends of the body are respectively provided with sound inlets and The sound outlet, and the size of the sound outlet is greater than the size of the sound inlet, and the cavity is gradually opened around from the sound inlet to the sound outlet; when the existing simple loudspeaker is used, the sound wave vibration is sent at the sound inlet at the left end of the main body, and the sound wave Vibration propagates to the right through the cavity of the body and comes out from the sound outlet, which reduces the dispersion of sound waves and achieves the sound amplification effect, which is convenient for students to understand the propagation of sound waves; it is found in the use of the existing simple loudspeaker that it can only Teaching the form of sound wave propagation, the teaching method is single, the teaching effect is average, resulting in low reliability; and it is not convenient to distinguish the small difference in sound size by relying solely on the auditory organ, the experimental effect is poor, resulting in low practicability

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