CN206024081U

CN206024081U - Gamut audio amplifier

Info

Publication number: CN206024081U
Application number: CN201621078382.0U
Authority: CN
Inventors: 张媛
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-09-26
Filing date: 2016-09-26
Publication date: 2017-03-15
Anticipated expiration: 2026-09-26

Abstract

A kind of gamut audio amplifier, including drain pan, sound basin, the loudspeaker unit being arranged in drain pan, the sound control unit being connected with loudspeaker unit, is characterized in that：The buck plate is hollow structure, and sound basin is assemblied in buck plate central authorities, and sound basin is made up of aluminium foil, and sound basin is made up of aluminium foil, and sound basin is provided with titanium film, and buck plate is arranged on drain pan, is correspondingly provided with through-hole structure between buck plate and drain pan；Sound control unit includes sound acquisition module, signal amplification module, controlling switch, sound acquisition module includes the source of sound probe that the test limit that three more parallels are arranged gradually increases, signal amplification module includes the amplifier with source of sound probe relative set, controlling switch and amplifier relative set.Which has, and simple and compact for structure, convenient to use, maintenance cost is low, service life is longer, the low advantage of fault rate.

Description

Gamut audio amplifier

Technical field

The utility model is related to loudspeaker field, specifically a kind of gamut audio amplifier.

Background technology

Gamut audio amplifier refers to the audio amplifier that can completely send 20Hz ~ 20kHz audio frequency.For the frequency range of audio amplifier, High frequency is easily done more than 20kHz now, has substantially covered the upper limit of hearing frequency of figurine.Difficult is low frequency reproduction, To High-Fidelity（High-fidelity, hereinafter referred to as Hi-Fi）For playback is required, figurine lower limit of hearing 20Hz should be reached, And there should be sufficiently high sound pressure level.The sound of reductase 12 0Hz ~ 20kHz is difficult under existence conditions using same diaphragm materials, Reduced low frequency, unit vibrating diaphragm needs to meet simultaneously that area is big, in quality, be washed into long, bear the factors such as power is big.

Utility model content

A kind of gamut audio amplifier is provided, fundamentally solves the problems referred to above, which has simple and compact for structure, easy to use Fast, maintenance cost is low, service life is longer, the low advantage of fault rate.

For achieving the above object, the utility model provides following technical scheme：The gamut audio amplifier includes drain pan, sound Basin, the loudspeaker unit being arranged in drain pan, the sound control unit being connected with loudspeaker unit, are characterized in that：Described Buck plate is hollow structure, and sound basin is assemblied in buck plate central authorities, and sound basin is made up of aluminium foil, and sound basin is provided with titanium film, and buck plate sets Put on drain pan, between buck plate and drain pan, be correspondingly provided with through-hole structure；Sound control unit includes sound acquisition module, signal Amplification module, controlling switch, sound acquisition module include the source of sound probe that the test limit that three more parallels are arranged gradually increases, Signal amplification module includes the amplifier with source of sound probe relative set, controlling switch and amplifier relative set.

Acoustical cotton is provided between the buck plate inwall and sound basin.

The beneficial effects of the utility model：The through-hole structure being correspondingly arranged between buck plate and drain pan, on the one hand can conduct Cabling mouth, on the other hand can be used as the sound wave import of source of sound probe.By arranging titanium film on sound basin, full frequency band phase place is consistent, Not there is a problem of that each frequency range PHASE SEPARATION needs correction, the knot picture of sound, sound field, spatial impression are more excellent.Without the need for coordinating frequency dividing Device working frequency distributes, and designs without the need for dividing network, it is to avoid because of desiging frequency divider harmful effect tonequality, directly can be driven by amplifier Dynamic, efficiency high.Noise in external environment condition is gathered by noise gathering module, the noise signal for collecting is converted to telecommunications Number, the size of current inside audio amplifier is controlled, and then controls the output volume of audio amplifier, it is achieved that the automatic control to audio amplifier output volume System so that user will not have influence on because of ambient external noise and normally listen to, delayed and cause so as to solve volume adjusting Affect the problem of audibility.Sound-absorbing material is set between buck plate inwall and sound basin, is suppressed the resonance of casing, is favorably improved Tonequality.

Description of the drawings

Fig. 1 is equiaxial side structure schematic view of the present utility model；

Cross section structure diagrams of the Fig. 2 for Fig. 1；

Fig. 3 is electrical block diagram.

Description of reference numerals：

In Fig. 1：1 buck plate, 2 sound basins, 4 loudspeaker units, 5 drain pans；

In Fig. 2：1 buck plate, 2 sound basins, 3 titanium films, 4 loudspeaker units, 5 drain pans；

In Fig. 3：T1 ~ T3 sources of sound are popped one's head in, U1 ~ U2 amplifiers, J1 ~ J3 normal open switch.

Specific embodiment

Below in conjunction with Fig. 1 ~ 3, content of the present utility model is described in detail by specific embodiment.The gamut audio amplifier includes Drain pan, sound basin, the loudspeaker unit being arranged in drain pan, the sound control unit being connected with loudspeaker unit 4.Wherein, assemble Plate 1 is hollow structure, and sound basin 2 is assemblied in buck plate central authorities, and sound basin is made up of aluminium foil, and sound basin is provided with titanium film 3, and buck plate 1 sets Put on drain pan 5, through-hole structure is correspondingly provided between buck plate and drain pan, acoustical cotton is provided between buck plate inwall and sound basin （Not shown in figure）.Sound control unit is included for gathering the sound acquisition module of environmental noise, signal amplification module, control Switch.

Sound acquisition module includes source of sound probe T1 ~ T3 that the test limit that three more parallels are arranged gradually increases（This reality Example is applied by taking three probes as an example, its sensitivity is respectively 40db, 60db, 80db, be that adjustment control sensitivity suitably can increase and decrease）.

Signal amplification module includes the amplifier U1 ~ U3 with source of sound probe T1 ~ T3 relative sets, and some relative sets Resistance.Resistance R4 ~ R5 is connected with amplifier U1, controls the multiplication factor of the signal of source of sound probe T1 outputs.Resistance R8, R10 It is connected with amplifier U2, controls the multiplication factor of the signal of source of sound probe T2 outputs.Resistance R9, R11 and amplifier U3 connections, control The multiplication factor of the signal of source of sound probe T3 outputs processed.

Controlling switch J1 ~ J3（Optional relay）With amplifier U1 ~ U3 relative sets.Measuring resistance R3 is popped one's head in source of sound Audio amplifier outputting standard volume, current regulating resistance R2, R6, R7 and normal open switch are controlled in the case of can't detect ambient external noise In parallel with measuring resistance R3 after the normally opened contact series connection of J1 ~ J3.

After source of sound probe T1 ~ T3 collects corresponding voice signal, electric signal is sent to corresponding amplifier U1 ~ U3, put Big device U1 ~ U3 controls corresponding normal open switch J1 ~ J3 closures, makes the resistor coupled in parallel corresponding with normal open switch J1 ~ J3, makes audio amplifier Circuitous resistance reduces, so as to the volume of controlling loudspeaker unit.When normal open switch J1 be in closure state when, resistance R2 and Measuring resistance R3 forms parallel connection, and total resistance diminishes, and signal is exported by resistance R2 and R3 after electronic component again, so as to hear Bigger sound.

When external noise is 40 ~ 60db, source of sound probe T1 can collect sound source signal, when external noise is 60 ~ 80db When, source of sound probe T1 and T2 can collect sound source signal, and when external noise is more than 80db, source of sound probe T1 ~ T3 can be adopted simultaneously Collect sound source signal.When external noise is more than or equal to 80db or is less than or equal to 40db, source of sound letter can be collected without source of sound probe Number, audio amplifier is still exported to the audio signal of outside input with the corresponding gain of measuring resistance resistance.Put according to signal is received The electric signal that big module is exported after amplifying, controls switch closure corresponding with environmental noise grade, makes the electricity of voice output module Resistance resistance diminishes.According to gain corresponding with resistance after adjustment, the audio signal of outside input is exported.

Claims

1. a kind of gamut audio amplifier, including drain pan, sound basin, the loudspeaker unit being arranged in drain pan, is connected with loudspeaker unit Sound control unit, it is characterised in that：The buck plate be hollow structure, sound basin be assemblied in buck plate central authorities, sound basin is by aluminium Paper tinsel is made, and sound basin is made up of aluminium foil, and sound basin is provided with titanium film, and buck plate is arranged on drain pan, corresponding between buck plate and drain pan It is provided with through-hole structure；Sound control unit includes sound acquisition module, signal amplification module, controlling switch, sound acquisition module The source of sound probe that the test limit arranged including three more parallels gradually increases, signal amplification module includes corresponding to source of sound probe The amplifier of setting, controlling switch and amplifier relative set.

2. gamut audio amplifier according to claim 1, it is characterised in that：Suction is provided between the buck plate inwall and sound basin Sound cotton.