Musical instrument sound amplification device

Abstract

The invention relates to a musical instrument sound amplification device. The musical instrument sound amplification device comprises a trumpet-shaped groove and a bowl-shaped annular base; a lug on the bottom face of the trumpet-shaped groove is a shallow concave part fixedly formed in the bottom of the bowl-shaped annular base; a hollow annular cavity is formed relative to the inner portion of the musical instrument sound amplification device; annular sound outlet holes are formed between an opening of the bowl-shaped annular base and the edge of the trumpet-shaped groove. The musical instrument sound amplification device greatly increases the loudness of musical sound mainly by means of the effect of audio vibration transmitted by a tail needle during cello playing to the musical instrument sound amplification device and through the reflection and diffusion of special geometric structure space of the hollow annular cavity in the musical instrument sound amplification device, and also diffuses the musical sound to playing space through the annular sound outlet holes in the direction of 360 degrees, thereby forming a stereo-surround sound field taking a player as the center.

Description

technical field [0001] The invention relates to a musical instrument sound amplifying device, in particular to a musical instrument sound amplifying device which can increase the loudness of the cello and generate a three-dimensional surround sound field when the cello is played. Background technique [0002] The amplified box used by the general cello has a hollow space inside, and the audio vibration effect produced by the cello can only be reflected by the grilles around the box to increase the loudness of the sound; The effect of the planar structure of the grille on the increase in the loudness of the piano sound caused by the reflection and amplification of the piano sound is limited. Furthermore, traditional amplified speakers only have a small number of sound outlets individually dug around the box body. Therefore, the piano sound emitted through the box body has a specific directionality, and cannot provide a three-dimensional surround sound field effect. Contents...

AI Technical Summary

Problems solved by technology

[0002] The amplified box used by the general cello has a hollow space inside, and the audio vibration effect produced by the cello can only be reflected by the grilles around the box to increase the loudness of the sound; The planar structure of the grille has a limited effect on the increase in the loudness of the piano sound caused by the reflection and amplification of the piano sound

Furthermore, traditional amplified speakers only have a small number of sound holes dug around the cabinet, so the piano sound emitted through the cabinet has a specific directionality, and cannot provide a three-dimensional surround sound field effect.

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