High-fidelity sound box with high-acoustic-resistance box body and inductance-capacitance buffer circuit

Abstract

The invention relates to a method for manufacturing a high-fidelity sound box. Different from a high-fidelity sound box of a traditional sound box technology, bass, mid-bass and high-pitch loudspeakers used in the prior art are abandoned; two full-frequency loudspeakers provided by a patent 201910306267.6 and an electromagnetic damping braking multi-flow-hole high-acoustic-resistance pure bass loudspeaker provided by a patent ZL201610835543.4 are adopted, and the full-frequency loudspeakers and the electromagnetic damping braking multi-flow-hole high-acoustic-resistance pure bass loudspeaker are opposite. In addition, a frequency divider in the prior art is abandoned and replaced by an inductance-capacitance buffer circuit. Another innovation of the invention is to increase the acoustic resistance of the sound box body to the maximum extent.

Description

technical field [0001] The present invention relates to serial production of high-grade (Hi Fi and Hi End) sound boxes, rather than common quality sound boxes. Objectively measure the electrical performance of the speaker and subjectively evaluate the auditory effect of the speaker. [0002] The audible sound range of the human ear is 20H Z -20KH Z . Generally divided into two sections of bass: 20H Z -40H Z , 40H Z -80H Z ; Alto three-stage: 80H Z -160H Z , 160H Z -1.2KH Z , 1.2KH Z -2.5KH Z ; Treble 2: 2.5KH Z -5KH Z , 5KH Z -20KH Z . [0003] The electrical performance of the speaker is determined by two curves: 1) frequency response curve; 2) total harmonic distortion curve of high, medium and low frequencies. [0004] The frequency response curve of ordinary speakers is based on -3db. The lower limit of frequency f 0 Generally at 50H Z Above, the high frequency end is at 10KH Z Below, and at 2.5KH Z -20KH Z There are obvious peaks and troughs between...

AI Technical Summary

Problems solved by technology

[0026] Imagine using the same domestic power amplifier and domestic mid-bass speakers of medium quality. When traditional audio technology is used, when a set of music signals reaches the listener, firstly, the sound is not clean enough, and secondly, the sound flow generated by traditional speakers is not hindered. The notes of the frequency range arrive at the same time. For the vast majority of human ears, the details of the sound arriving at the same time cannot be distinguished, and the sound is not clear and fuzzy. Glitch, derived from the digital pulse signal widely existing in modern society