CN102651829A

CN102651829A - Loudspeaker box

Info

Publication number: CN102651829A
Application number: CN2011100462882A
Authority: CN
Inventors: 黄永新
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-02-28
Filing date: 2011-02-28
Publication date: 2012-08-29

Abstract

The invention relates to a loudspeaker box, which is characterized in that a sound box is divided into two cavities in the middle by a separation plate, a loudspeaker is arranged on the separation plate, the cavity arranged at the back side of the loudspeaker is a sealed assisting cavity or an energy storage cavity, and the cavity in front of the loudspeaker is a resonance cavity and is provided with a large sound release opening. The loudspeaker box has the beneficial effects that the requirement on box body materials is not high, split plates can also be used as the box body materials, the manufacture process is simple, and the effect cannot be influenced by slight air leakage.

Description

Loudspeaker enclosure

Technical field

The present invention relates to a kind of loudspeaker enclosure.

Background technology

Loudspeaker enclosure is mainly used in the replaying effect that improves low-frequency sound.Popular having " inverted phase type " at present, " closed ", " air-flow group formula " etc., design philosophy is: the resonance frequency of adjusting tank obtains the frequency response an of the best.Therefore, design considerations, power amplifier, tank material, manufacture craft, adjustment technology, sound-absorbing material etc. are had relatively high expectations, thereby cost is high, energy consumption big, effect improves few.The present invention is directed to the problems referred to above, propose a brand-new design philosophy, simplified design program, lower the difficulty of manufacture craft, reduce the requirement to power amplifier, material-saving is energy-conservation again, and the sound reproduction effect might as well.

The sound generating mechanism of human body is: splanchnocoel provides the energy of control vocal cords amplitude, and vocal cord vibration produces sound, and this sound is very faint, needs the sympathetic response through pharyngeal cavity, oral cavity, and the people is heard.In this process, " sympathetic response " (sound repeatedly reflects, mixes intraoral) is actually the amplification process of sound.The present invention just around this principle is used in " sympathetic response " phenomenon in the audio amplifier design.So, be called for short " sympathetic response formula " audio amplifier.

" " principle of audio amplifier such as Fig. 1 are divided into two cavitys by dividing plate < 5>with audio amplifier to the sympathetic response formula, and loud speaker < 1>is installed on the dividing plate; The cavity of loud speaker back is airtight, is power-assisted chamber or energy-storing chamber < 2 >, and the cavity of loud speaker front has the big sound mouth < 4>of releasing resonator < 3 >; The cavity of a semi-hermetic when loud speaker moves backward, compresses the air in the power-assisted chamber at last; Because this chamber is airtight, the atmospheric pressure altar is big in the chamber; When loud speaker travelled forward, the air expansion that has compressed had strengthened loud speaker thrust forward; The sound that sends has obtained reinforcement, imitative splanchnocoel like human body, and gas-storing capacity is big; Sound just can be a little greatly the same; Sound reflection in resonator, mixing, energy stack spread out of, have accomplished the sympathetic response process with abundant partials from release the sound mouth, imitative oral cavity like human body.Adjust power-assisted chamber, resonator, release the ratio of sound mouth, just can obtain the different audio effect, imitative as the people can control sound through adjustment laryngeal muscles, oral cavity size effect.

This have a closed chamber, a semi-hermetic chamber, a big sympathetic response formula audio amplifier of releasing the sound mouth, and not existing together with other audio amplifier also has:

1, inverted phase type has only a cavity, and sound releasing hole is little, need join phase-reversing tube;

2, closed has only a cavity, no sound releasing hole;

Though 3, air-flow group formula has two cavitys, each cavity all has sound releasing hole, and sound releasing hole is little, joins phase-reversing tube, and actual is the combination of two phase inverting box.

Summary of the invention

The purpose of this invention is to provide a kind of loudspeaker enclosure, to overcome the above-mentioned deficiency that prior art exists.

The objective of the invention is to realize through following technical scheme:

A kind of loudspeaker enclosure comprises before and after the loud speaker < 1>that a cavity is respectively arranged, and middle by dividing plate < 5>separately the cavity of loud speaker back is airtight, claims power-assisted chamber < 2 >; The cavity of loud speaker front is a semi-hermetic, is called resonator < 3 >, has to release sound mouth < 4 >; Cooperate practical frequency divider, coil wherein is tapped.

Beneficial effect of the present invention is:

1, tank material is less demanding, and jigsaw also can;

2, manufacture craft is simple, is not afraid of a spot of gas leakage;

3, use simple low stage power amplifier, playback effect might as well;

4, the small volume playback can meet the demands, and does not also have during big volume playback and causes heartbeat, and the noise pollution outdoor to playback is few.

Description of drawings

According to accompanying drawing the present invention is done further explain below.

Fig. 1 is the described " sympathetic response formula " schematic diagram of audio amplifier of the embodiment of the invention;

Fig. 2 is the big body structure figure of loud speaker flatwise;

Fig. 3 is that loud speaker is sidelong the middle and high sound loudspeaker box of formula band structure chart;

Fig. 4 is that loud speaker is sidelong in the formula band, the another kind of form of high pitch loudspeaker casing;

Fig. 5 is a loud speaker flatwise small box structure chart;

Fig. 6 is that loud speaker is sidelong formula small box structure chart;

Fig. 7 is the frequency divider electrical schematic diagram that cooperates resonant tank.

Embodiment

Fig. 2 is the big body structure figure of loud speaker flatwise, and loud speaker is towards last, and level is installed on the dividing plate, is the power-assisted chamber below, is resonator above, releases the sound mouth and is located at directly over the casing.

Fig. 3 is that loud speaker is sidelong the middle and high sound loudspeaker box of formula band structure chart, is divided into upper and lower two intervals with plank, and the last positive at interval middle and high sound loud speaker of installing is for preventing the low frequency influence; Following interval is the present invention, and loud speaker is vertically mounted on the dividing plate towards a left side; The right side is the power-assisted chamber, and the left side is a resonator, releases the sound mouth and is located at down left side at interval; Positive, the back side all can, in order to match, another case is released the sound mouth and is located in the other direction.

Fig. 4 is that loud speaker is sidelong in the formula band, and the another kind of form of high pitch loudspeaker casing is not established the interval that separates middle and high sound and woofer; Only at the nearly middle and high sound loud speaker of dividing plate on one side, have and be convenient to the breach that middle and high sound loud speaker is installed, woofer is towards a left side; Be vertically mounted on the dividing plate, the right side is the resistance chamber, and the left side is resonator, release the sound mouth is located at the left side; Just, the back side all can, in order to match, another case is released the sound mouth and should be located in the other direction.

Fig. 5 is a loud speaker flatwise small box structure chart, and loud speaker is vertically mounted on the dividing plate towards last, is the power-assisted chamber below, above for resonator, release the sound mouth and be located at above the casing and hit exactly.

Fig. 6 is that loud speaker is sidelong formula small box structure chart, and loud speaker is vertically mounted on the dividing plate towards a left side, and the right side is the power-assisted chamber, and the left side is a resonator, releases the sound mouth and is located at the left side, is pairing, on another case sound mouth should be located in the other direction.

Fig. 7 is the frequency divider electrical schematic diagram that cooperates resonant tank.Coil can coiling on the core of diameter 40mm, wide 20mm, and L1 is 30 circles, and L2 is 20 circles, and L3 is 50 circles, and the enamelled wire diameter is 1mm, also can make the tread flaking formula.

Adjustment for ease is during actual fabrication, according to the casing size; Press the principle (scale also not really important, casing vast scale can greatly, casing small scale can littler) of resonator greater than the power-assisted chamber; Fixed ratio with resonator and power-assisted chamber; The size of sound mouth is released in adjustment, playback is seen fit get final product, if feel that the interior sound reverberation time of the excessive resonator of loud speaker amplitude is long; Can be in the power-assisted chamber bottom margin bore hole with individual or a plurality of 10mm, lower the air pressure in power-assisted chamber and the reverberation time shortened.

Claims

1. loudspeaker enclosure, by by dividing plate audio amplifier being divided into two cavitys, loud speaker is installed on the dividing plate in the middle of it is characterized in that, and the cavity of loud speaker back is airtight power-assisted chamber or energy-storing chamber, and the cavity of loud speaker front has the big sound mouth of releasing resonator.