CN206164810U - Take into account bimodulus audio amplifier of two kinds of occasions of amusement and meeting - Google Patents
Take into account bimodulus audio amplifier of two kinds of occasions of amusement and meeting Download PDFInfo
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- CN206164810U CN206164810U CN201621234836.9U CN201621234836U CN206164810U CN 206164810 U CN206164810 U CN 206164810U CN 201621234836 U CN201621234836 U CN 201621234836U CN 206164810 U CN206164810 U CN 206164810U
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- audio amplifier
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- meeting
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Abstract
The utility model discloses a take into account bimodulus audio amplifier of two kinds of occasions of amusement and meeting, this audio amplifier include that left box, right box put the box in and to be put the box in, and places in between left box and the right box, puts that the box is built -in to have mode switch treatment circuit, signal detection circuit harmony to transfer the treatment circuit in and, in put the box be provided with a three -section rotation type change over switch on the surface, three -section rotation type change over switch is connected with the input electricity of mode switch treatment circuit, the output of mode switch treatment circuit loops through signal detection circuit harmony and transfers behind the treatment circuit respectively and to put electric connection of audio amplifier on the box in and with left box, right box. The utility model discloses make this audio amplifier when the conference model, ensured the enough clarities of voice of meeting, under the amusement mode, two audio amplifiers produce the sound that the sound location is accurate, lifelike, have spot effect about making.
Description
Technical field
The utility model is related to a kind of audio amplifier, more particularly to a kind of bimodulus audio amplifier for taking into account amusement and two kinds of occasions of meeting.
Background technology
Conventional meeting sound equipment, is all analogous to broadcast audio amplifier, and voice and medium-high frequency are had a surplus, and low frequency is not enough, lacks sound
Pleasure is recreational；Or simply audio sound equipment is displaced on meeting sound equipment, although Music Appreciation has, but in conference model
Under, easily produce the unclear problem of reverberation and people's acoustic fix ranging；Therefore such audio amplifier can only use conference model, just cannot
For entertainment mode, so as to cause existing audio amplifier to be on the market only used for amusement or a kind of pattern of meeting, it is impossible to reach simultaneous
The effect of appearance, and then reduce the use range of audio amplifier.
Utility model content
For weak point present in above-mentioned technology, the utility model provides one kind and takes into account amusement and two kinds of occasions of meeting
Bimodulus audio amplifier, the audio amplifier be capable of achieving entertain and meeting both of which switching, either meeting is still entertained can obtain pole
The audio effect of cause.
For achieving the above object, the utility model provides a kind of bimodulus audio amplifier for taking into account amusement and two kinds of occasions of meeting, bag
Left box body, right case and central boxes body are included, the central boxes body is placed between left box body and right case, and in the central boxes body
It is equipped with pattern switching process circuit, signal detection process circuit and tone processing circuit；Arrange on the surface of the central boxes body
There are one or three sections of rotary switching switches, three sections of rotary switching switches are electrically connected with the input of pattern switching process circuit
Connect, the output end of the pattern switching process circuit pass sequentially through after signal detection process circuit and tone processing circuit respectively with
Audio amplifier electrical connection on left box body, right case and central boxes body.
Wherein, the pattern switching process circuit include virtual ring around sonication chip, center channels left branch signal, in
Put sound channel right branch signal, the first three terminal regulator and the second three terminal regulator；Three sections of rotary switching switches and first
Access virtual ring after three terminal regulator connection to connect around sonication chip, first three terminal regulator and the second three terminal regulator
Access virtual ring afterwards to be respectively connected to around sonication chip, and the center channels left branch signal and center channels right branch signal
Virtual ring is around sonication chip；First pin of three sections of rotary switching switches is meeting mould when connecting with power-on switch
Formula, the second pin of three sections of rotary switching switches is entertainment mode when connecting with power-on switch, and described three sections rotary
3rd pin of switching switch is electrostatic mode when connecting with power-on switch.
Wherein, to include the 16th electric capacity, the 15th electric capacity, the 9th resistance and the tenth electric for the signal detection process circuit
The high impedance input signal detection unit of resistance composition, the isolation amplifying unit being made up of first comparator and the second comparator, by
Signal demodulator circuit, FET and dual-channel audio power amplifier chip that rectifying tube and the 20th electric capacity are constituted；In described
Put sound channel left branch signal and center channels right branch signal amplifies single by high impedance input signal detection unit with isolating
Unit's connection, and the isolation amplifying unit passes sequentially through signal demodulator circuit and FET and dual-channel audio power amplification core
Piece connects.
Wherein, tone processing circuit includes that audio strengthens process chip, definition compensation potentiometer and low-frequency compensation current potential
Device, 16V power supplys connect audio by the 3rd three terminal regulator strengthens process chip, and the definition compensation potentiometer and low frequency are mended
Repaying potentiometer and being divided into two parts and access audio strengthens process chip, and sound is strengthened after process chip is processed more by audio
Truly.
Wherein, the left box body and right case are inverted phase type structure casing, and the central boxes body is enclosed construction case
Body.
The beneficial effects of the utility model：Compared with prior art, what the utility model was provided takes into account amusement and meeting two
The bimodulus audio amplifier of occasion is planted, the audio amplifier is mainly cut including left box body, right case, central boxes body and the pattern being placed in central boxes body
Process circuit, signal detection process circuit and tone processing circuit are changed, at three sections of rotary switching switches and pattern switching
The switching of the audio amplifier entertainment mode and conference model is realized in the cooperation of reason circuit；By signal detection process circuit and tone processing
Different audio effect processings under circuit realiration different mode so that the audio amplifier has ensured that the voice of meeting is enough in conference model
Clearly；Under entertainment mode, the audio amplifier of left and right two is set to produce sound accurate positioning, the sound of true to nature, great spot effect.This reality
With it is new with it is reasonable in design and applied widely the features such as, mini-session can be directly applied to, multi-functional occasion is entertained to obtain.
Description of the drawings
Fig. 1 is the structural representation of the bimodulus audio amplifier for taking into account amusement and two kinds of occasions of meeting of the present utility model；
Fig. 2 is the schematic diagram of pattern hand-off process circuit in the utility model；
Fig. 3 is the schematic diagram of signal detection process circuit in the utility model；
Fig. 4 is the schematic diagram of the utility model medium pitch process circuit.
Main element symbol description is as follows：
10th, left box body 11, right case
12nd, central boxes body 13, pattern switching process circuit
14th, signal detection process circuit 15, tone processing circuit.
Specific embodiment
In order to more clearly state the utility model, the utility model is further described below in conjunction with the accompanying drawings.
Refer to Fig. 1-4, the bimodulus audio amplifier for taking into account amusement and two kinds of occasions of meeting of the present utility model, including left box body
10th, right case 11 and central boxes body 12, central boxes body 12 is placed between left box body 10 and right case 11, and central boxes body 12 is built-in
There are pattern switching process circuit 13, signal detection process circuit 14 and tone processing circuit 15；Set on the surface of central boxes body 12
It is equipped with the input electricity of one or three sections of rotary switching switch SW, three sections of rotary switching switch SW and pattern switching process circuit 13
Connection, the output end of pattern switching process circuit 13 passed sequentially through and divide after signal detection process circuit 14 and tone processing circuit 15
Do not electrically connect with the audio amplifier on left box body 10, right case 11 and central boxes body 12.
Compared to the situation of prior art, what the utility model was provided takes into account the bimodulus sound of amusement and two kinds of occasions of meeting
Case, the audio amplifier mainly includes left box body 10, right case 11, central boxes body 12 and the pattern switching process being placed in central boxes body 12
Circuit 13, signal detection process circuit 14 and tone processing circuit 15, at three sections of rotary switching switches and pattern switching
The switching of the audio amplifier entertainment mode and conference model is realized in the cooperation of reason circuit；By signal detection process circuit and tone processing
Different audio effect processings under circuit realiration different mode so that the audio amplifier has ensured that the voice of meeting is enough in conference model
Clearly；Under entertainment mode, the audio amplifier of left and right two is set to produce sound accurate positioning, the sound of true to nature, great spot effect.This reality
With it is new with it is reasonable in design and applied widely the features such as, mini-session can be directly applied to, multi-functional occasion is entertained to obtain.
Further referring to Fig. 2, pattern switching process circuit 13 includes that virtual ring is left around sonication chip U1, center channels
Branch signal AUX_L, center channels right branch signal AUX_R, the first three terminal regulator IC1 and the second three terminal regulator IC2；Three
After the rotary switching switch SW of section and the connection of the first three terminal regulator virtual ring is accessed around sonication chip, the first three terminal regulator
With access virtual ring after the connection of the second three terminal regulator around sonication chip, and center channels left branch signal and center channels are right
Branch signal is respectively connected to virtual ring around sonication chip；First pin of three sections of rotary switching switches is connected with power-on switch
When be conference model, the second pins of three sections of rotary switching switches are entertainment mode when connecting with power-on switch, three sections of rotations
3rd pin of formula switching switch is electrostatic mode when connecting with power-on switch.The circuit is specially：The first of interface socket CON
It is connected with one end of second resistance R2 after pin and center channels right branch signal AUX_R connections, the second of interface socket CON draws
Pin accesses the other end of second resistance R2, after the 3rd pin of interface socket CON and center channels left branch signal AUX_L connections
Connection first resistor R1, first resistor R1 is connected with second resistance R2, and center channels left branch signal AUX_L also passes sequentially through string
Fiveth pin of the virtual ring around sonication chip, center channels right branch letter are accessed after 3rd resistor R3 of connection and the first electric capacity C1
Number AUX_R is also passed sequentially through and is accessed virtual ring after the 4th resistance R4 and the second electric capacity C2 of series connection and draw around the 4th of sonication chip
Pin, virtual ring is connected between first pin and the 24th pin of sonication chip U1 by the 4th electric capacity C4, and second draws
Connected by the 3rd electric capacity C3 between pin and the 3rd pin, connected by the 5th resistance R5 between the 6th pin and the 7th pin,
8th pin is grounded after the 5th electric capacity C5 is connected with one end of the 6th electric capacity C6, after the 9th pin and the connection of the tenth pin again
The other end of the 6th electric capacity C6 is accessed, the 11st pin ground connection, the 12nd pin is grounded by the 6th resistance R6, the 14th pin
It is connected with the 6th resistance R6 by the 7th resistance R7 with the 15th pin, the 16th pin ground connection, the 13rd pin connects respectively
The 11st electric capacity C11 and the 8th resistance R8 is met, three sections of rotary switching switches are connected to the 11st electric capacity C11 and power-on switch A,
And power-on switch A is grounded；15th pin is also connected with first pin of the second three terminal regulator IC2, the second three terminal regulator IC2
The first pin and second pin between connect the 12nd electric capacity C12, and the second pin of the second three terminal regulator is also grounded, the
It is steady that 3rd pin and virtual ring of two three terminal regulators accesses the one or three end after the 23rd pin connection of sonication chip
First pin of depressor IC1, and the first pin of the first three terminal regulator is also associated with the 13rd electric capacity C13 and the tenth of parallel connection
Four electric capacity C14, the second pin ground connection of the first three terminal regulator, model LM78L09 of the first three terminal regulator, the two or three end
Model LM78L05 of voltage-stablizer, model QS7779 of the virtual ring around sonication chip；Virtual ring around sonication chip
17 pins connect the tenth electric capacity C10, and the 18th pin connects the 9th electric capacity C9, leads between the 19th pin and the 20th pin
The 8th electric capacity C8 connections are crossed, is connected by the 7th electric capacity C7 between the 21st pin and the 22nd pin.The work of the circuit
It is as principle：When three sections of rotary switching switches switch to entertainment mode, i.e., when second pin is connected with power-on switch A, swash
Virtual ring living can believe the mixing of dolby pro logic or Dolby Digital AC-3 around the signal decoding circuit of sonication chip internal
Three-dimensional number is decoded and carried out around sonication, promoting the audio amplifiers of left and right two to produce by two-channel power amplifier can be with
Doby multichannel compares the three-dimensional of U.S. around sound field.When three sections of rotary switching switches switch to conference model, i.e., the
When one pin is connected with power-on switch A, virtual ring does not carry out any decoding process around sonication chip, makes signal keep Normal juice former
Taste, while by the left and right branch signal passage of center channels, the vocal sections for extracting intermediate frequency, power amplification is individually carried out, by
Put audio amplifier playback so that more preferable vocal effects are produced during conference model.
Further referring to Fig. 3, signal detection process circuit 14 include the 16th electric capacity C16, the 15th electric capacity C15,
9th resistance R9 and the tenth resistance R10 composition high impedance input signal detection unit, compared by first comparator UA and second
The isolation amplifying unit of device UB compositions, the signal demodulator circuit being made up of rectifying tube D and the 20th electric capacity C20, FET Q and
Dual-channel audio power amplifier chip U3, model TDA7265 of dual-channel audio power amplifier chip；Left point of center channels
Supported signal AUX_L and center channels right branch signal AUX_R amplify single by high impedance input signal detection unit with isolating
Unit's connection, and isolation amplifying unit passes sequentially through signal demodulator circuit and FET with dual-channel audio power amplifier chip company
Connect.Center channels right branch signal AUX_R accesses first comparator UA by the 15th electric capacity C15 and the 9th resistance R9 of series connection
The 3rd pin, the second pin of first comparator UA connects and be grounded after the 12nd resistance R12, and the 3rd of first comparator UA draws
Pin is also grounded by the 11st resistance R11, and the first pin of first comparator passes through the 17th electric capacity C17 and the 15th of series connection
Connect rectifying tube D after resistance R15；The 16th electric capacity C16 and the tenth resistance that center channels left branch signal AUX_L passes through series connection
R10 accesses the 5th pin of the second comparator UB, and the 6th pin of the second comparator connects and be grounded after the 14th resistance R14, the
5th pin of two comparators is also grounded by the 13rd resistance R13, and the 7th pin of the second comparator is by the tenth of series connection
Connect rectifying tube D after eight electric capacity C18 and the 16th resistance R16, the 16th resistance R16 is grounded also after the 17th resistance R17；
Rectifying tube D is grounded by the 19th electric capacity C19, and rectifying tube D also connects FET, field-effect by the 18th resistance R18
The 19th resistance R19 is also connected between the resistance R18 of Guan Yu 18, FET connects alliteration after the 20th resistance R20
3rd pin of channel audio power amplifier chip, the 7th pin of dual-channel audio power amplifier chip is by the 20th of series connection
Connect R channel ADUIO-R after electric capacity C20 and the 21st resistance R21；Draw the 11st of dual-channel audio power amplifier chip
Pin connects L channel ADUIO-L by the 21st electric capacity C21 and the 22nd resistance R22 of series connection.In conference model, when
Host do not lift up one's voice or no signal be input into when, the circuit by detecting to the left and right branch signal of center channels,
Signal input is determined whether, and the presence or absence of signal is converted into by low and high level, dual-channel audio by rectifying tube, FET
Power amplifier chip makes quiet or working reaction by judging this signal.This circuit advantage：1st, the left and right branch's letter of center channels
Number by the input of the circuit point two-way high impedance, can effectively prevent R/L from altering sound, the separating degree of whole machine signal greatly improved,
The signal of each passage can be detected again simultaneously, the demand of both has been taken into account well.2nd, this circuit employs open loop fortune
The working method amplified is calculated, in the case where effectively false triggering is prevented, and the sensitivity of detection can be improved.3rd, rectifying tube and field are imitated
Should pipe cooperation, make it is completely isolated between signal-detection-control three, without interruption.
In the present embodiment, tone processing circuit 14 include audio strengthen process chip U3, definition compensation potentiometer and
Low-frequency compensation potentiometer, 16V power supplys connect audio by the 3rd three terminal regulator IC3 strengthens process chip, definition compensation electricity
Position device and low-frequency compensation potentiometer be divided into two parts and access audio strengthen process chip U3, sound by audio enhancing at
Reason chip is truer after processing.Audio strengthens model XR1075 of process chip U3, and its first pin and the 18th pin
It is grounded, the 22nd electric capacity C22 is connected between second pin and the first pin, the 3rd pin and the 17th pin is connected to
Signal detection process circuit；4th pin is respectively connected to first pin and second of low-frequency compensation potentiometer Part I VR2-A
Pin, the pin of low-frequency compensation potentiometer VR2-A Part I the 3rd accesses audio by the 23rd electric capacity C23 strengthens process core
6th pin of piece, the 5th pin is respectively connected to first pin and second of definition compensation potentiometer Part I VR1-A and draws
Pin, the 3rd pin of definition compensation potentiometer Part I VR1-A is connected with the 23rd electric capacity C23, and audio enhancing is processed
7th pin of chip U3 accesses one end of the 25th electric capacity C25 by the 24th electric capacity C24 and the 8th pin, and the 20th
The other end connection L channel ADUIO-L of five electric capacity C25；Tenth pin the 26th electric capacity C26 and the 20th in parallel
It is grounded after seven electric capacity C27, the tenth pin is also connected with the 3rd three terminal regulator IC3；12nd pin is by the 30th electric capacity and the
R channel ADUIO-R is reconnected after the connection of 11 pins, the 13rd pin passes through the pin of the 29th capacitance connection the 12nd, the
14 pins connect the 28th electric capacity C28, and the 15th pin connects respectively the of low-frequency compensation potentiometer Part II VR2-B
Four pins and the 5th pin, the 6th pin and the definition of low-frequency compensation potentiometer Part II VR2-B compensate potentiometer second
The 23rd electric capacity C23 is accessed after the 6th pin connection of part VR1-B, the 16th pin compensates potentiometer with definition respectively
4th pin of Part II and the 5th pin connect.The operation principle of the circuit is：When signal is through transmission and prime audio
After process circuit, the impact that a phase delay and waveform are deteriorated can be produced to signal, such as make waveform slicing, deformation, harmonic wave,
Spurious clutter etc., these reactions acoustically, are being exactly that definition variation becomes muddy.Audio strengthens process chip U3 and passes through phase place
Compensation, harmonic compensation, the technology such as bass postpones, profile is lifted make weight adjusting the relation of the phase and amplitude of high, medium and low sound
The sound put is truer, more natural.
In the present embodiment, left box body 10 and right case 11 are inverted phase type structure casing, and central boxes body 12 is closed
Structure casing.When three sections of rotary switching switches are switched to entertainment mode, the 3D of decoded process of mainly being reset by R/L audio amplifiers
Signal so as to produce virtual ring around when participating in the cintest audio；When three sections of rotary switching switches are switched to conference model, mainly by
Put audio amplifier and produce vocal sections, R/L audio amplifiers are spoken part as auxiliary, make integral sound effect clean, clearly.
In conference model, audio frequency does the straight-through process of high-fidelity to the utility model, while adding the height of the AR companies of U.S. E Ⅹ
Parsing power BBE chip XR1075, makes definition and signal to noise ratio be lifted to a new height, in unmanned vocal input, even if ear
Piece it is attached on audio amplifier, also can't hear a noise.Under entertainment mode, the seponix audio supplies companies for introducing famous American are empty
Near-ring adopts the top-quality technologies Q-surroundTM in Canada Q-sound laboratories, energy around sonication chip QS7779, this chip
The mixed signal of dolby pro logic or Dolby Digital AC-3 is decoded, the signal of multichannel is carried out complexity with HRTF
Computing, three-dimensional sound according to HRTF process, makes the sound into human ear meet the binaural effect and auricle of people
Effect, accordingly produces the acoustic image of direction in space in human brain, makes two audio amplifiers can generation sound accurate positioning, true to nature, great existing
The sound of field effect.People's sound articulation that the utility model pursues meeting occasion and the audio that entertainment place is pursued pass through
Technological means is effectively compatible in a set of audio amplifier, and either meeting is still entertained can obtain ultimate attainment enjoyment of musical result.
Disclosed above is only several specific embodiments of the present utility model, but the utility model is not limited to this,
The changes that any person skilled in the art can think of should all fall into protection domain of the present utility model.
Claims (5)
1. it is a kind of take into account amusement and two kinds of occasions of meeting bimodulus audio amplifier, it is characterised in that including left box body, right case and in put
Casing, the central boxes body is placed between left box body and right case, and be equipped with the central boxes body pattern switching process circuit,
Signal detection process circuit and tone processing circuit；It is provided with one or three sections of rotary switchings on the surface of the central boxes body to open
Close, three sections of rotary switching switches are electrically connected with the input of pattern switching process circuit, and the pattern switching processes electricity
The output end on road pass sequentially through after signal detection process circuit and tone processing circuit respectively with left box body, right case and central boxes
Audio amplifier electrical connection on body.
2. it is according to claim 1 to take into account the bimodulus audio amplifier entertained with two kinds of occasions of meeting, it is characterised in that the pattern
Hand-off process circuit include virtual ring around sonication chip, center channels left branch signal, center channels right branch signal, first
Three terminal regulator and the second three terminal regulator；Access after three sections of rotary switching switches and the connection of the first three terminal regulator empty
Near-ring accesses virtual ring around sonication core after sonication chip, first three terminal regulator and the connection of the second three terminal regulator
Piece, and the center channels left branch signal and center channels right branch signal are respectively connected to virtual ring around sonication chip；Institute
It is conference model when the first pin for stating three sections of rotary switching switches is connected with power-on switch, three sections of rotary switchings are opened
It is entertainment mode when the second pin and power-on switch of pass are connected, the 3rd pins and be powered that three sections of rotary switchings are switched
It is electrostatic mode during switch connection.
3. it is according to claim 2 to take into account the bimodulus audio amplifier entertained with two kinds of occasions of meeting, it is characterised in that the signal
Detection process circuit includes the high impedance input letter of the 16th electric capacity, the 15th electric capacity, the 9th resistance and the tenth resistance composition
Number detector unit, the isolation amplifying unit being made up of first comparator and the second comparator, by rectifying tube and the 20th capacitance group
Into signal demodulator circuit, FET and dual-channel audio power amplifier chip；The center channels left branch signal is with
Put sound channel right branch signal to connect with amplifying unit is isolated by high impedance input signal detection unit, and the isolation is amplified
Unit passes sequentially through signal demodulator circuit and FET and is connected with dual-channel audio power amplifier chip.
4. it is according to claim 3 to take into account the bimodulus audio amplifier entertained with two kinds of occasions of meeting, it is characterised in that the tone
Process circuit includes that audio strengthens process chip, definition compensation potentiometer and low-frequency compensation potentiometer, and 16V power supplys pass through the 3rd
Three terminal regulator connection audio strengthens process chip, and the definition compensation potentiometer and low-frequency compensation potentiometer are divided into two
Dividing and access audio strengthens process chip, and sound strengthens truer after process chip is processed by audio.
5. it is according to claim 1 to take into account the bimodulus audio amplifier entertained with two kinds of occasions of meeting, it is characterised in that the left case
Body and right case are inverted phase type structure casing, and the central boxes body is enclosed construction casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621234836.9U CN206164810U (en) | 2016-11-17 | 2016-11-17 | Take into account bimodulus audio amplifier of two kinds of occasions of amusement and meeting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621234836.9U CN206164810U (en) | 2016-11-17 | 2016-11-17 | Take into account bimodulus audio amplifier of two kinds of occasions of amusement and meeting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206164810U true CN206164810U (en) | 2017-05-10 |
Family
ID=58660140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621234836.9U Expired - Fee Related CN206164810U (en) | 2016-11-17 | 2016-11-17 | Take into account bimodulus audio amplifier of two kinds of occasions of amusement and meeting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206164810U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109831710A (en) * | 2019-02-19 | 2019-05-31 | 泽丰音频技术(深圳)有限公司 | A kind of microphone sound equipment integrated equipment and adjusting method, system |
-
2016
- 2016-11-17 CN CN201621234836.9U patent/CN206164810U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109831710A (en) * | 2019-02-19 | 2019-05-31 | 泽丰音频技术(深圳)有限公司 | A kind of microphone sound equipment integrated equipment and adjusting method, system |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170510 Termination date: 20171117 |