CN108834022B

CN108834022B - High-fidelity sound box

Info

Publication number: CN108834022B
Application number: CN201810783279.3A
Authority: CN
Inventors: 杨利华; 其他发明人请求不公开姓名
Original assignee: JIANGXI TAIZHI ELECTRONIC TECHNOLOGY Co Ltd
Current assignee: Jiangxi Taide Intelligence Technology Co Ltd
Priority date: 2016-01-06
Filing date: 2016-01-06
Publication date: 2019-12-13
Anticipated expiration: 2036-01-06
Also published as: CN109040901B; CN108966057B; CN108989941B; CN108989941A; CN108924719B; CN105681956B; CN109040901A; CN108966057A; CN108834022A; CN105681956A; CN108924719A; CN108882102B; CN108882102A

Abstract

The invention provides a high-fidelity sound box which comprises a base, wherein an audio input and output module is arranged in the base; a node tube formed by an elastic sheet is fixed on the base, an axially extending vibration coil is fixedly wound on the surface of the node tube, and the vibration coil is coupled with the audio input and output module; and a magnetic column extending along the axis of the corrugated pipe is also arranged in the corrugated pipe. The sound box has higher fidelity to the reduction of human voice.

Description

High-fidelity sound box

Technical Field

The invention relates to the field of electronic equipment, in particular to a high-fidelity sound box.

Background

For the existing sound box, the sound production mechanism is that the sound cone is pushed by the electromagnetic coil to vibrate and produce sound, and the vibration source structure is different from a human sound source structure, namely a throat pipe structure, so that the human sound cannot be restored to high fidelity.

Disclosure of Invention

In view of the above problems, the present invention provides a high fidelity voice box, which has high fidelity to voice reproduction.

the technical scheme adopted by the invention for realizing the technical purpose is as follows: the human voice high-fidelity sound box comprises a base, wherein an audio input and output module is arranged in the base; a node tube formed by an elastic sheet is fixed on the base, an axially extending vibration coil is fixedly wound on the surface of the node tube, and the vibration coil is coupled with the audio input and output module; and a magnetic column extending along the axis of the corrugated pipe is also arranged in the corrugated pipe.

Preferably, a rigid pipe is sleeved outside the node pipe, a spherical cover capable of freely rotating around the axis of the node pipe is covered at the upper end of the rigid pipe, the rigid pipe and the spherical cover completely surround the node pipe, and a transverse sound-emitting hole is formed in the spherical cover. Furthermore, the broadcasting hole is provided with a peripheral wall extending into the spherical cover, and the peripheral wall is in a horn mouth shape so as to obtain better sound mixing effect.

Preferably, the magnetic column is composed of an iron core and an excitation coil wound on the iron core, the base comprises an excitation power supply, and the excitation power supply changes the magnetic induction intensity of the magnetic column through adjusting the excitation current of the excitation coil so as to realize the adjustment of the maximum volume of the sound box. Furthermore, the iron core is divided into more than two iron core segments, the iron core segments are separated by a non-magnetic material, each iron core segment is wound with an excitation coil, the excitation coils on the iron core segments are mutually coupled in parallel to the excitation power supply, and the excitation power supply is a current stabilization source; the excitation coils on the iron core segments are respectively provided with an on-off switch, each on-off switch is coupled with an adjusting switch in the base, and the adjusting switches are connected with the excitation coils with different numbers to adjust the excitation length of the excitation current on the magnetic column, so that the length of the obvious vibration generated on the node tube is changed, and the effect of the sound box on restoring high pitch, medium pitch and low pitch is adjusted.

The invention has the beneficial effects that: when the human voice high-fidelity sound box works, audio current is output to the vibration coil on the nodal tube, so that the vibration coil and the magnetic column act and vibrate to drive the nodal tube to vibrate, and the vibration structure of the human voice high-fidelity sound box is basically consistent with that of the throat tube, so that high-fidelity reduction output of human voice is realized.

Drawings

FIG. 1 is a schematic view of an embodiment of my high fidelity audio amplifier.

FIG. 2 is a schematic view of an embodiment of the personal high fidelity speaker.

FIG. 3 is a schematic view of an embodiment of a magnetic pillar in the sound height fidelity sound box of the inventor.

Detailed Description

The invention is further illustrated with reference to the following figures and examples:

In the first embodiment shown in fig. 1, the human voice hi-fi loudspeaker box comprises a base 1, wherein an audio input and output module is arranged in the base 1; the corrugated pipe 2 formed by an elastic sheet is fixed on the base 1, and the elastic sheet can be a resin sheet or a common cone paper sheet; an axially extending vibration coil 3 is fixedly wound on the surface of the nodal tube 2, and the vibration coil 3 is coupled with the audio input and output module; and a magnetic column 4 extending along the axis of the corrugated pipe is also arranged in the corrugated pipe 2.

When the human voice high-fidelity sound box works, audio current is output to the vibration coil 3 on the nodal tube 2, so that the vibration coil 3 and the magnetic column 4 act and vibrate to drive the nodal tube 2 to vibrate, and the vibration structure of the nodal tube is basically consistent with that of the throat tube, so that high-fidelity output of human voice is realized.

In the second embodiment shown in fig. 2, the difference from the first embodiment is that: a rigid pipe 5 is sleeved outside the nodal pipe 2, a spherical cover 6 capable of freely rotating around the axis of the nodal pipe 2 is covered at the upper end of the rigid pipe 5, and the rigid pipe 5 and the spherical cover 6 completely surround the nodal pipe 2, so that vibration sound waves generated by the nodal pipe 2 are repeatedly reflected in a space surrounded by the rigid pipe 5 and the spherical cover 6 to form a good sound mixing effect, and the tone color is more muddy; and a transverse broadcast hole 60 is arranged on the spherical cover 6 to simulate the mouth of a human body, so that the sound effect broadcast from the broadcast hole is closer to the sound effect of a real person, and the broadcast direction can be flexibly adjusted by rotating the spherical cover 6. In addition, the sound hole 60 may have a peripheral wall extending into the dome 6, and the peripheral wall may have a bell mouth shape, so as to obtain a better sound mixing effect.

In addition to the above embodiments, one embodiment of the magnetic pillar 4 is shown in fig. 3, the magnetic pillar 4 is composed of an iron core 41 and an exciting coil 42 wound on the iron core, and the base 1 includes an exciting power supply, and the exciting power supply changes the magnetic induction intensity of the magnetic pillar 4 by adjusting the exciting current of the exciting coil 42, so as to adjust the maximum sound volume of the sound box (the sound volume adjustment in the maximum sound volume range is realized by changing the magnitude of the audio current, that is, the magnitude of the audio current in the vibration coil 3).

In the magnetic column embodiment shown in fig. 3, further, the iron core is divided into three iron core segments from top to bottom, the iron core segments are separated by a non-magnetic material 43, an excitation coil 42 is wound on each iron core segment, and the excitation coils 42 on each iron core segment are coupled in parallel with each other to the excitation power supply, which is a steady current source, that is, the total current output is stable; the excitation coils on the iron core segments are respectively provided with on-off switches, each on-off switch is coupled with an adjusting switch in the base 1, and the adjusting switches are used for adjusting the excitation length of the excitation current on the magnetic columns 4 by switching on different numbers of the excitation coils 42; if 1 excitation coil is switched on, the output current of the excitation power supply intensively excites the iron core segment corresponding to the 1 excitation coil, and only 1 segment corresponding to the iron core segment on the node tube 2 generates obvious vibration; if 2 excitation coils are switched on, 2 sections of the corrugated tube 2 opposite to the two excitation coils generate obvious vibration; for the tubular vibrating body, because the natural vibration frequency is related to the length of the tubular vibrating body participating in the vibration, the shorter the vibration length is, the stronger the capability of restoring high frequency is, and conversely, the stronger the capability of restoring low frequency is (consistent with the characteristics of string vibration and cone vibration), therefore, the restoring effect of the sound box on high pitch, middle pitch and low pitch can be adjusted by switching on different numbers of the exciting coils 42, and for the traditional cone sound box, in order to realize the effect adjustment of high pitch, middle pitch and low pitch, three groups of high pitch, middle pitch and low pitch loudspeakers are generally needed, the structure is numerous and complicated, and the sound box structure is not simple and convenient.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A human voice high-fidelity sound box comprises a base (1), wherein an audio input and output module is arranged in the base (1); the method is characterized in that: a node tube (2) formed by an elastic sheet is fixed on the base (1), an axially extending vibration coil (3) is fixedly wound on the surface of the node tube (2), and the vibration coil (3) is coupled with the audio input and output module; a magnetic column (4) extending along the axis of the corrugated pipe is also arranged in the corrugated pipe (2);

A rigid pipe (5) is sleeved outside the corrugated pipe (2), a spherical cover (6) capable of freely rotating around the axis of the corrugated pipe is covered at the upper end of the rigid pipe (5), the corrugated pipe (2) is completely surrounded by the rigid pipe (5) and the spherical cover (6), and a transverse sound-spreading hole (60) is formed in the spherical cover (6); the sound playing hole (60) is provided with a peripheral wall extending towards the inside of the spherical cover (6), and the peripheral wall is in a bell mouth shape; the magnetic column (4) is composed of an iron core (41) and a magnet exciting coil (42) wound on the iron core, an excitation power supply is arranged in the base (1), and the excitation power supply changes the magnetic induction intensity of the magnetic column (4) through adjustment of the excitation current of the magnet exciting coil (42).