CN205265892U - Improve audio amplifier of bass effect - Google Patents
Improve audio amplifier of bass effect Download PDFInfo
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- CN205265892U CN205265892U CN201520962712.1U CN201520962712U CN205265892U CN 205265892 U CN205265892 U CN 205265892U CN 201520962712 U CN201520962712 U CN 201520962712U CN 205265892 U CN205265892 U CN 205265892U
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- audio amplifier
- speaker
- audio
- wireway
- power supply
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Abstract
The utility model discloses an improve audio amplifier of bass effect, a serial communication port, the audio amplifier include box, loudspeaker, loudspeaker sets up sound cavity in the box, loudspeaker's horn mouth setting is before the box on the shell, the audio amplifier still includes an air duct, the one end setting of air duct is on the box backshell, the other end setting of air duct is in in the sound cavity, air duct cavity makes sound cavity and external intercommunication. The utility model discloses be favorable to improving the bass effect of audio amplifier.
Description
Technical field
The utility model relates to appliance field, in particular, relates to a kind of sound that improves bass effectCase.
Background technology
Nowadays,, along with progress and the development of science, electrical appliance miscellaneous has entered people'sIn the middle of life, people's quality of life and the use of electrical appliance are closely bound up;
Such as, audio amplifier become people live in the middle of a very important part, a lot of people are for audio amplifierRequirement only rest on the broadcasting of computer etc. can being raised one's voice, but lower than audio amplifier fan comeSay, this is inadequate, and audio amplifier fan there will be the situation of the bass effect of pursuing audio amplifier often,But a lot of audio amplifiers or bass effect are bad on the market, or expensive.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of sound that can improve bass effectCase.
The purpose of this utility model is achieved through the following technical solutions:
Improve an audio amplifier for bass effect, described audio amplifier comprises casing, speaker, described soundCase loudspeaker are arranged on the sound chamber in described casing, and the horn mouth of described speaker is arranged on before casingOn shell;
Described audio amplifier also comprises a wireway, and one end of described wireway is arranged on casing back cover, instituteThe other end of stating wireway is arranged in described sound chamber, and described wireway hollow, makes described sound chamberChamber is in communication with the outside.
Preferably, described wireway is rectangular columnar structured, and described wireway is arranged on described soundOne end in chamber, is arranged on the rear downside of described speaker;
The diameter of described wireway is less than described speaker. The rear of speaker also has and shakesMoving, if rearward audio amplifier vibration is also used, will make sound wave strengthen, supper bass is strengthened,After wireway is installed, because the diameter of wireway is less than speaker diameter, so just have comparisonStrong sound wave is gone out from wireway, and so, speaker forwards all obtains with rearward sound waveArrive utilization, audio amplifier tonequality is improved.
Preferably, described speaker is at least provided with two, described in the quantity correspondence of described wirewayThe quantity of speaker arranges, and the setting position symmetry of wireway. The quantity of wireway, andPosition all corresponding speaker arranges, the sound wave that each speaker is obtained by wirewayStrength enhancing is suitable, avoids between different speaker, and difference appears in the utilization of sound wave, and causesThe situation that audio amplifier tonequality is noisy.
Preferably, described casing comprises wooden case and cabinet front plate, and described speaker also comprises and being arranged onDescribed horn mouth fixed part around, described in described speaker is fixed to by described fixed part screwOn wooden case;
Described cabinet front plate comprises loudspeaker through hole, and described horn mouth correspondence is arranged on described loudspeaker through holePlace, the diameter of described loudspeaker through hole is less than described fixed part, is more than or equal to described horn mouth simultaneously;Described cabinet front plate is screwed in the front case face of described wooden case. Also establish in outside at speakerBe equipped with cabinet front plate, the loudspeaker through hole on cabinet front plate is greater than described bellmouth orifice, and is less than fixed part,This is not easy by between speaker and wooden case dust in not affecting speakerSpace enters wooden case inside.
Preferably, described casing also comprises plate after iron, and is fixedly connected on after described iron on plate and instituteState the circuit board that speaker connects by wire, front case face and the rear cabinet face of described wooden case haveRectangular through-hole, after described circuit board and iron, plate correspondence is arranged on described rectangular through-hole place;
After described iron, plate is screwed in the case around of rectangular through-hole of the rear cabinet face of described wooden caseOn body;
Described audio amplifier also comprises and is arranged on described wooden case top box face, and connects by wire with described circuit boardConnect. Circuit board is arranged on after iron on plate, and the static of circuit board can be got rid of more easily,Reduce the possibility that audio signal is subject to electrostatic interference, improved audio amplifier tonequality.
Preferably, on the rear cabinet face of described casing, be provided with gas port, described wireway at least comprises twoIndividual radial protrusion, described wireway is fixed on described gas port place by described radial protrusion clamping;
Described gas port is arranged on the rear cabinet face side lower position of described casing. Establishing of radial projectionPut, wireway can be clamped and be fixed on gas port place, and gas port is arranged under rear cabinet face sidePortion position, makes the rear cabinet face of wireway and casing and side box surface only close, casing and wirewayVibrations are coordinated, and are conducive to improve audio amplifier tonequality.
Preferably, described audio amplifier comprises circuit board, is laid with audio amplifier audio frequency and processes electricity on described circuit boardRoad, described audio amplifier audio frequency processing circuit comprise power supply, micro-control unit, wireline audio input block,Power amplifier, volume audio chip and speaker, described power supply respectively give described micro-control unit,Power amplifier, volume audio chip and speaker are powered, and described micro-control unit passes through successivelyVolume audio chip and power amplifier are connected in speaker, and described wireline audio input block is connected inThe audio frequency input pin of described micro-control unit. Outer signal, through connecting line, is inputted by wireline audioUnit is input to micro-control unit, and after changing by micro-control unit, carries out audio frequency output; Audio frequencyOutput is adjusted after optimization by volume audio chip, is amplified, and have audio amplifier by power amplifierLoudspeaker are play.
Preferably, described audio amplifier be also provided be coupled in described micro-control unit function button, refer toShow lamp, Bluetooth antenna and NFC unit. Except wireline audio input block, this audio amplifier can also lead toCross Bluetooth antenna and carry out ANTENNAUDIO input and output, or can also pass through this low coverage of NFC unitCarry out the wireless input and output of audio frequency from wireless communication technique, the I/O mode of audio frequency is various, makesMust can in various occasions, use by this audio amplifier, applied widely.
Preferably, described power supply comprises the first power supply, and described the first power supply comprises external power supply adapterInput, voltage-stablizer, described external power supply adapter input be connected in described volume audio chip andThe power end of power amplifier, the another power end that is connected in described micro-control unit by described voltage-stablizer.External power supply adapter, plugs after DC socket, can give simultaneously volume audio chip, power amplifier withAnd micro-control unit powers, and because micro-control unit is comparatively tight for the steady demand of voltage etc.Lattice, power to micro-control unit by voltage-stablizer, can ensure the voltage stabilization of micro-control unit,Ensure the normal work of micro-control unit; Concrete, voltage-stablizer can be by voltage stabilization at 5V.
Preferably, described audio amplifier also comprises USB port, and described power supply also comprises second source, described inSecond source comprises external power supply adapter input, the first voltage conversion unit and second voltage conversionUnit, described in described external power supply adapter input is connected in by described the first voltage conversion unitUSB port, the another STANDBY that is connected in described micro-control unit by described second voltage converting unitPower end. USB port can be expanded the occupation mode of audio amplifier, and external power supply adapter input passes throughThe first voltage conversion unit is powered to it, can be able to work, specifically can pass through the first voltageConverting unit provides the voltage of 5V to it; And pass through second voltage converting unit to STANDBY power endPower supply, can be in the time of audio amplifier standby, can be by the most of circuit except micro-control unitPower supply is cut off, and to reach the object of power saving, specifically can be converted to by second voltage converting unitThe following voltage of 5V or 5V is powered to micro-control unit.
The utility model, owing to being provided with wireway, is circulated the inside and outside air of casing, improvesThe power bearing ability of audio amplifier, and can reduce the distortion of sound, amount sense is sufficient, highly sensitive; CanTo utilize the resonance of casing and wireway, in the case of the acoustic pressure of loudspeaker is constant, expand low frequencyThe lower frequency limit of balance playback time, has promoted the bass effect of audio amplifier; And, increase air guide to audio amplifierPipe can't significantly improve its cost.
Brief description of the drawings
Fig. 1 is the explosive view of a kind of audio amplifier that improves bass effect of the utility model embodiment;
Fig. 2 is the fragmentary cross-sectional view of the utility model embodiment;
Fig. 3 is another part profile of the utility model embodiment;
Fig. 4 is the audio amplifier audio frequency processing in a kind of audio amplifier that improves bass effect of this use new embodimentThe schematic diagram of circuit.
Detailed description of the invention
Below in conjunction with accompanying drawing and preferred embodiment, the utility model is described in further detail.
Fig. 1 is the explosive view of a kind of audio amplifier that improves bass effect of the utility model embodiment, and Fig. 2 isThe fragmentary cross-sectional view of the utility model embodiment, Fig. 3 is that another part of the utility model embodiment cuts openFace figure, known in conjunction with Fig. 1, Fig. 2 and Fig. 3, this audio amplifier comprises casing 20, speaker 30, soundCase loudspeaker 30 are arranged on the sound chamber in casing, and the horn mouth 31 of speaker 30 is arranged on casingOn 20 fore shells;
Audio amplifier also comprises a wireway 10, and one end of wireway 10 is arranged on casing 20 back covers, leadsThe other end of tracheae 10 is arranged in sound chamber, and wireway 10 hollows make sound chamber connect with extraneousLogical.
The utility model, owing to being provided with wireway, is circulated the inside and outside air of casing, improvesThe power bearing ability of audio amplifier, and can reduce the distortion of sound, amount sense is sufficient, highly sensitive; CanTo utilize the resonance of casing and wireway, in the case of the acoustic pressure of loudspeaker is constant, expand low frequencyThe lower frequency limit of balance playback time, has promoted the bass effect of audio amplifier; And, increase air guide to audio amplifierPipe can't significantly improve its cost.
Preferably, wireway 10 is rectangular columnar structured, and wireway 10 is arranged in sound chamberOne end, is arranged on the rear downside of speaker 30;
The diameter of wireway 10 is less than speaker 30. The rear of speaker also has vibration,If rearward audio amplifier vibration is also used, will make sound wave strengthen, supper bass is strengthened, peaceAfter dress wireway, because the diameter of wireway is less than speaker diameter, so just have more intenseSound wave go out from wireway, so, speaker forwards all obtains with rearward sound waveUtilization, make audio amplifier tonequality improve.
Preferably, speaker 30 is at least provided with two, the corresponding audio amplifier loudspeaker of quantity of wireway 1030 quantity arranges, and the setting position symmetry of wireway 10. The quantity of wireway, andPosition all corresponding speaker arranges, the sound wave that each speaker is obtained by wirewayStrength enhancing is suitable, avoids between different speaker, and difference appears in the utilization of sound wave, and causesThe situation that audio amplifier tonequality is noisy.
Preferably, casing 20 comprises wooden case 21 and cabinet front plate 22, and speaker 30 also comprises and establishingPut the fixed part 32 around horn mouth 31, speaker 30 is fixed to by fixed part 32 screwsOn described wooden case 21;
Cabinet front plate 22 comprises loudspeaker through hole 23, and horn mouth 31 correspondences are arranged on loudspeaker through hole 23 places,The diameter of loudspeaker through hole 23 is less than fixed part 32, is more than or equal to horn mouth 31 simultaneously; Cabinet front plate22 are screwed in the front case face of wooden case 21. Outside at speaker is also provided with before casingPlate, the loudspeaker through hole on cabinet front plate is greater than described bellmouth orifice, and is less than fixed part, and this is not affectingWhen speaker, make dust be not easy to enter wood by the space between speaker and wooden caseCase inside.
Preferably, casing 20 also comprises plate 40 after iron, and is fixedly connected on after iron on plate 40 and soundThe circuit board 50 that case loudspeaker 30 connect by wire, front case face and the rear cabinet face of wooden case 21 are opened respectivelyHave rectangular through-hole, after circuit board 50 and iron, plate 40 correspondences are arranged on rectangular through-hole place;
After iron, plate 40 is screwed in the casing around of rectangular through-hole of the rear cabinet face of wooden case 21On;
Audio amplifier also comprises and is arranged on wooden case 21 top box faces, and is connected by wire with circuit board 50. ElectricityRoad plate is arranged on after iron on plate, and the static of circuit board can be got rid of more easily, reducesAudio signal is subject to the possibility of electrostatic interference, has improved audio amplifier tonequality.
Preferably, on the rear cabinet face of casing 20, be provided with gas port 12, wireway 10 at least comprises twoIndividual radial protrusion 11, wireway 10 is fixed on gas port 12 places by radial protrusion 11 clampings;
Gas port 12 is arranged on the rear cabinet face side lower position of casing 20. The setting of radial projection,Wireway can be clamped and be fixed on gas port place, and gas port is arranged on position under rear cabinet face sidePut, make the rear cabinet face of wireway and casing and side box surface only close, the vibrations of casing and wirewayCoordinated, be conducive to improve audio amplifier tonequality.
Fig. 4 is the audio amplifier audio frequency processing in a kind of audio amplifier that improves bass effect of this use new embodimentThe schematic diagram of circuit, as shown in the figure, preferred, audio amplifier comprises circuit board 50, cloth on circuit board 50Be provided with audio amplifier audio frequency processing circuit, described audio amplifier audio frequency processing circuit comprises power supply, micro-control unitMCU, wireline audio input block AUX, power amplifier AMP, volume audio chip PT2313E and soundCase loudspeaker, power supply is given respectively micro-control unit MCU, power amplifier AMP, volume audio chip PT2313EPower with speaker, micro-control unit MCU passes through volume audio chip PT2313E successivelyAMP is connected in speaker with power amplifier, and wireline audio input block AUX is connected in microcontroller listThe audio frequency input pin of the MCU of unit. Outer signal, through connecting line, is inputted by wireline audio input blockTo micro-control unit, and after changing by micro-control unit, carry out audio frequency output; Audio frequency output is passed throughVolume audio chip is amplified by power amplifier, and has speaker to carry out after adjusting and optimizingPlay.
Preferably, audio amplifier is also provided with the function button KEY, the instruction that are coupled in described micro-control unitLamp LED, Bluetooth antenna and NFC unit. Except wireline audio input block, this audio amplifier is all rightCarry out ANTENNAUDIO input and output by Bluetooth antenna ANTENNA, or can also be mono-by NFCThis near field communication (NFC) of the NFC of unit carries out the wireless input and output of audio frequency, and the input of audio frequency is defeatedGo out mode various, this audio amplifier can be used in various occasions, applied widely.
Preferably, power supply comprises the first power supply, the first power supply comprise external power supply adapter input,Voltage-stablizer, external power supply adapter input is connected in volume audio chip PT2313E and power amplifierThe power end of AMP, the another power end that is connected in micro-control unit MCU by voltage-stablizer LDO. Specifically, this voltage-stablizer is preferably low difference linear constant voltage regulator LDO; External power supply adapter, plugs DC socketAfter, can power to volume audio chip, power amplifier and micro-control unit simultaneously, and byComparatively strict for the steady demand of voltage etc. in micro-control unit, by voltage-stablizer to micro-control unitPower, can ensure the voltage stabilization of micro-control unit, ensure the normal work of micro-control unit;Concrete, voltage-stablizer can be by voltage stabilization at 5V.
Preferably, audio amplifier also comprises USB port, and power supply also comprises second source, and second source comprisesExternal power supply adapter input, the first voltage conversion unit DCTODC-1 and second voltage converting unitDCTODC-2, external power supply adapter input is connected in by the first voltage conversion unit DCTODC-1USB port, is separately connected in micro-control unit MCU's by second voltage converting unit DCTODC-2STANDBY power end. USB port can be expanded the occupation mode of audio amplifier, the input of external power supply adapterEnd is powered to it by the first voltage conversion unit, can be able to work, specifically can be by theOne voltage conversion unit provides the voltage of 5V to it; And pass through second voltage converting unit to STANDBYPower end power supply, can be in the time of audio amplifier standby, can be by the major part except micro-control unitThe power supply of circuit is cut off, and to reach the object of power saving, specifically can turn by second voltage converting unitGetting the following voltage of 5V or 5V in return powers to micro-control unit.
Above content is the utility model is done in conjunction with concrete preferred embodiment further detailedDescribe in detail brightly, can not assert that concrete enforcement of the present utility model is confined to these explanations. For this practicalityNovel person of an ordinary skill in the technical field, in the prerequisite that does not depart from the utility model designUnder, can also make some simple deduction or replace, all should be considered as belonging to protection of the present utility modelScope.
Claims (10)
1. an audio amplifier, is characterized in that, described audio amplifier comprises casing, speaker, and described speaker is arranged on the sound chamber in described casing, and the horn mouth of described speaker is arranged on casing fore shell;
Described audio amplifier also comprises a wireway, and one end of described wireway is arranged on casing back cover, and the other end of described wireway is arranged in described sound chamber, and described wireway hollow is in communication with the outside described sound chamber.
2. a kind of audio amplifier as claimed in claim 1, is characterized in that, described wireway is rectangular columnar structured, and described wireway is arranged on the one end in described sound chamber, is arranged on the rear downside of described speaker;
The diameter of described wireway is less than described speaker.
3. a kind of audio amplifier as claimed in claim 1, is characterized in that, described speaker is at least provided with two, and the quantity of the corresponding described speaker of quantity of described wireway arranges, and the setting position symmetry of wireway.
4. a kind of audio amplifier as claimed in claim 1, it is characterized in that, described casing comprises wooden case and cabinet front plate, and described speaker also comprises and be arranged on described horn mouth fixed part around, and described speaker is fixed on described wooden case by described fixed part screw;
Described cabinet front plate comprises loudspeaker through hole, and described horn mouth correspondence is arranged on described loudspeaker through hole, and the diameter of described loudspeaker through hole is less than described fixed part, is more than or equal to described horn mouth simultaneously; Described cabinet front plate is screwed in the front case face of described wooden case.
5. a kind of audio amplifier as claimed in claim 2, it is characterized in that, described casing also comprises wooden case, plate after iron, with be fixedly connected on described iron after on plate, the circuit board that is connected by wire with described speaker, front case face and the rear cabinet face of described wooden case have rectangular through-hole, and after described circuit board and iron, plate correspondence is arranged on described rectangular through-hole place;
After described iron, plate is screwed on the casing around of rectangular through-hole of rear cabinet face of described wooden case;
Described audio amplifier also comprises and is arranged on described wooden case top box face, and is connected by wire with described circuit board.
6. a kind of audio amplifier as claimed in claim 1, is characterized in that, on the rear cabinet face of described casing, is provided with gas port, and described wireway at least comprises two radial protrusions, and described wireway is fixed on described gas port place by described radial protrusion clamping;
Described gas port is arranged on the rear cabinet face side lower position of described casing.
7. a kind of audio amplifier as claimed in claim 1, it is characterized in that, described audio amplifier comprises circuit board, on described circuit board, be laid with audio amplifier audio frequency processing circuit, described audio amplifier audio frequency processing circuit comprises power supply, micro-control unit, wireline audio input block, power amplifier, volume audio chip and speaker, described power supply is given respectively described micro-control unit, power amplifier, volume audio chip and speaker are powered, described micro-control unit is connected in speaker through volume audio chip and power amplifier successively, described wireline audio input block is connected in the audio frequency input pin of described micro-control unit.
8. a kind of audio amplifier as claimed in claim 7, is characterized in that, described audio amplifier is also provided with the function button, indicator lamp, Bluetooth antenna and the NFC unit that are coupled in described micro-control unit.
9. a kind of audio amplifier as claimed in claim 7, it is characterized in that, described power supply comprises the first power supply, described the first power supply comprises external power supply adapter input, voltage-stablizer, described external power supply adapter input is connected in the power end of described volume audio chip and power amplifier, is separately connected in the power end of described micro-control unit by described voltage-stablizer.
10. a kind of audio amplifier as claimed in claim 9, it is characterized in that, described audio amplifier also comprises USB port, described power supply also comprises second source, described second source comprises external power supply adapter input, the first voltage conversion unit and second voltage converting unit, described external power supply adapter input is connected in described USB port by described the first voltage conversion unit, is separately connected in the STANDBY power end of described micro-control unit by described second voltage converting unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520962712.1U CN205265892U (en) | 2015-11-27 | 2015-11-27 | Improve audio amplifier of bass effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520962712.1U CN205265892U (en) | 2015-11-27 | 2015-11-27 | Improve audio amplifier of bass effect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205265892U true CN205265892U (en) | 2016-05-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520962712.1U Active CN205265892U (en) | 2015-11-27 | 2015-11-27 | Improve audio amplifier of bass effect |
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| Country | Link |
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| CN (1) | CN205265892U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116261073A (en) * | 2023-03-06 | 2023-06-13 | 先歌国际影音股份有限公司 | Sound box intermediate frequency regulator structure |
-
2015
- 2015-11-27 CN CN201520962712.1U patent/CN205265892U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116261073A (en) * | 2023-03-06 | 2023-06-13 | 先歌国际影音股份有限公司 | Sound box intermediate frequency regulator structure |
| CN116261073B (en) * | 2023-03-06 | 2024-05-03 | 先歌国际影音股份有限公司 | Sound box intermediate frequency regulator device |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |