Demonstration equipment of producing music by rolling ball on ramp

Abstract

The invention provides demonstration equipment of producing music by rolling a ball on a ramp. The equipment comprises a rail, a plurality of metal pipes arranged on the rail in parallel, and a ball rolling along the rail, wherein an inclination angle exists between the rail and a horizontal plane; the metal pipes lie on the rail; axial directions of the metal pipes are perpendicular to an inclination direction of the rail; a tone of sound generated by collision of the ball to the metal pipes depends on the lengths of the metal pipes; and a rhythm of the sound generated by the collision of theball to the metal pipes depends on the distances between the metal pipes. The equipment is simple in structure, and employs an ingenious combination of a ball body and a shape of the rail; the ball body excites sounding devices arranged in specific positions in the rail to play the music in a natural rolling process; the knowledge of a sound characteristic is embodied and visualized; the difficulty of an audience to understand an abstract concept is reduced; the watching interest and positivity of the audience are raised; and the audience conveniently understands and masters the relevant knowledge.

Description

technical field [0001] The invention belongs to the technical field of demonstration devices, and in particular relates to a demonstration device for making music by ramp rolling balls. Background technique [0002] Sound is sound waves produced by vibrating objects. Among them, the ear-piercing sound made by objects vibrating irregularly is called noise, and the pleasant sound made by objects vibrating regularly is called music tone. When two objects vibrate to produce sound after collision, if the ratio of the vibration frequency of the two objects is an irreducible complex ratio, such as 201:388, the person who hears the impact sound will find the sound harsh; on the contrary, if the ratio of the vibration frequency of the two objects is For a simple ratio that can be reduced, such as 3:7, people who hear the impact sound will feel that the sound is very pleasant. [0003] Loudness, pitch, and timbre are the three main characteristics of musical sounds. Loudness refers ...

AI Technical Summary

Problems solved by technology

[0004] The theory of producing musical sounds through the impact of objects is relatively abstract, and the existing related demonstration devices often lack intuition, which is not conducive to understanding

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