Digital sound production device of vertical piano

Abstract

The invention discloses a digital sound production device of a vertical piano, which comprises a piano body (1) and loudspeakers (4), wherein the rear part of the piano body (1) is provided with a hollow box body; a sound box board (8) is arranged in the hollow box body on the rear part of the piano body (1) transversely; the hollow box body is partitioned into an upper high-frequency sound box (2) and a lower low-frequency sound box (3) through the sound box board (8); a clapboard (5) is arranged in the low-frequency sound box (3); two loudspeaker holes are formed on the sound box board (8);the loudspeakers (4) are arranged in the two loudspeaker holes; and the back board walls of a left sound box body and a right sound box body of the low-frequency sound box (3) are provided with a guide hole (6) respectively. By the device, the sound box board is used for separating the high-frequency sound box from the low-frequency sound box, the low-frequency sound box is partitioned into two box bodies through the clapboard, and the problems of phase interference and short circuit of low-frequency sound are effectively solved; and the device has fine, well-bedded and ambient tone quality and can bring strong hearing sense shock to a listener.

Description

technical field [0001] The invention relates to a sounding device, in particular to a digital sounding device for an upright piano. Background technique [0002] When the sound wave is at a low frequency, the propagation of the sound wave has a strong diffraction ability and is almost non-directional. Therefore, the sound of the speaker can be diffracted to the front of the diaphragm, and the sound heard at a certain point in front of the speaker should be the synthesis of the front sound wave and the rear sound wave. If the phases of the two sound waves at this point are the same, the combined sound pressure at this point will increase; if the phases of the two sound waves are opposite, the sound pressure at this point will decrease, or even be zero and no sound can be heard. The phenomenon at this time is similar to the phenomenon that the voltage drops due to the short circuit of the circuit, resulting in a short circuit of the sound. At different frequencies, the phase...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a simple structure, different sound pressure for the existing digital piano, the problems of uneven sound pressure distribution, sound phase interference and sound short circuit can not be better solved, and the sound quality effect is not good. The sound pressure distribution of the frequency is uniform, and the sound quality is good. Upright piano digital sound device

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