CN110149584A - A kind of audio power amplifier - Google Patents
A kind of audio power amplifier Download PDFInfo
- Publication number
- CN110149584A CN110149584A CN201910502376.5A CN201910502376A CN110149584A CN 110149584 A CN110149584 A CN 110149584A CN 201910502376 A CN201910502376 A CN 201910502376A CN 110149584 A CN110149584 A CN 110149584A
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- CN
- China
- Prior art keywords
- power amplifier
- module
- audio
- controller
- audio power
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R27/00—Public address systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/12—Circuits for transducers, loudspeakers or microphones for distributing signals to two or more loudspeakers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2430/00—Signal processing covered by H04R, not provided for in its groups
Abstract
This application discloses a kind of audio power amplifiers, it include: for providing the sound source module of target audio, there is spare interface, and target audio is adjusted, so that sound source module exports controller, pre-amplifying module, power amplifier module and the loudspeaker of audio signal corresponding with preset rules；Wherein, controller is connected with the input terminal of sound source module, and the output end of sound source module is connected with the input terminal of pre-amplifying module, and the output end of pre-amplifying module is connected with the input terminal of power amplifier module, and the output end of power amplifier module is connected with loudspeaker.Obviously, by audio power amplifier provided herein, target user can be made to make more functional improvements to audio power amplifier by the spare interface on controller, has thus been considerably improved user experience of people during using audio power amplifier.
Description
Technical field
The present invention relates to power amplifier technical field, in particular to a kind of audio power amplifier.
Background technique
Audio power amplifier is because it can amplify audio signal, to receive the generally happiness of the music public
Love.But in the prior art, audio power amplifier can only be that audio frequency power amplifier, form of expression list are carried out according to default setting
One, present more diversified consumption demand can not be adapted to, so that user experience of people when using audio power amplifier
It is poor.For this technical problem, currently, more effective solution not yet.
It is art technology it can be seen that how to further increase user experience of people when using audio power amplifier
Personnel's technical problem urgently to be resolved.
Summary of the invention
In view of this, using audio frequency power amplifier the purpose of the present invention is to provide a kind of audio power amplifier to improve people
User experience when machine.Its concrete scheme is as follows:
A kind of audio power amplifier, comprising:
For providing the sound source module of target audio, there is spare interface, and the target audio is adjusted, so that
Obtain controller, pre-amplifying module, power amplification mould that the sound source module exports audio signal corresponding with preset rules
Block and loudspeaker；
Wherein, the controller is connected with the input terminal of the sound source module, the output end of the sound source module with it is described
The input terminal of pre-amplifying module is connected, the input terminal phase of the output end of the pre-amplifying module and the power amplifier module
Even, the output end of the power amplifier module is connected with the loudspeaker.
Preferably, the sound source module includes lossless bluetooth module or route input module or audio decoder module.
Preferably, the lossless bluetooth module is specially AC6925.
Preferably, the audio decoder module is specially VS1053.
Preferably, further includes:
For showing the play time of the audio signal or the OLED of spectrum information or information volume；
Wherein, the OLED is connected with the spare interface of the controller.
Preferably, further includes:
For showing the rhythm lamp of light sequence corresponding with the frequency spectrum of the audio signal；
Wherein, the rhythm lamp is connected with the spare interface of the controller.
Preferably, further includes:
The touch electronic organ of target melody is played for target user；
Wherein, the input terminal for touching electronic organ is connected with the spare interface of the controller, the touch electronic organ
Output end be connected with the input terminal of the pre-amplifying module.
Preferably, the pre-amplifying module is specially AD827.
Preferably, the power amplifier module is specially LM3886.
Preferably, the controller is specially STM32.
As it can be seen that in the present invention, being adjusted when passing through the target audio that controller exports sound source module, and make
When sound source module can export the audio signal for meeting preset rules, be first by pre-amplifying module to the audio signal into
Then row voltage amplification carries out power to the audio signal exported via pre-amplifying module by power amplifier module and puts
Greatly, finally, carrying out power amplifier to the audio signal exported by power amplifier module by loudspeaker, thus it is achieved that audio function
Put the audio frequency power amplifier function of machine.Also, in audio power amplifier provided by the present invention, because controller also has reserved connect
Mouthful, such people are during using audio power amplifier, so that it may by the spare interface on controller to audio power amplifier
Make more functional improvements, is thus considerably improved user experience of people during using audio power amplifier.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is a kind of structure chart of audio power amplifier provided in an embodiment of the present invention；
Fig. 2 is the structure chart of another audio power amplifier provided in an embodiment of the present invention；
Fig. 3 is the structure chart of another audio power amplifier provided in an embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Figure 1, Fig. 1 is a kind of structure chart of audio power amplifier provided by the embodiment of the present invention, the audio frequency power amplifier
Machine includes:
For providing the sound source module 11 of target audio, there is spare interface, and target audio is adjusted, so that
Sound source module 11 exports controller 12, pre-amplifying module 13, the power amplification mould of audio signal corresponding with preset rules
Block 14 and loudspeaker 15；
Wherein, controller 12 is connected with the input terminal of sound source module 11, the output end of sound source module 11 and preposition amplification mould
The input terminal of block 13 is connected, and the output end of pre-amplifying module 13 is connected with the input terminal of power amplifier module 14, power amplification
The output end of module 14 is connected with loudspeaker 15.
It in the present embodiment, is to increase to have in audio power amplifier in order to which the performance to audio power amplifier is expanded
The controller 12 of spare interface, also, the target audio that sound source module 11 is exported can also be carried out by the controller 12
Adjustment, so that sound source module 11 can export audio signal corresponding with preset rules.That is, passing through such setting side
Formula, so that it may so that people select the target audio exported via sound source module 11, volume adjustment etc..
Specifically, being by pre-amplifying module 13 first to sound source module when 11 output audio signal of sound source module
11 audio signals exported carry out voltage amplification, then, by power amplifier module 14 to via 13 institute of pre-amplifying module
The audio signal of output carries out power amplification, finally, again by loudspeaker 15 to the sound exported via power amplifier module 14
Frequency signal carries out audio frequency power amplifier, thereby realizes the elementary audio power amplifier function of audio power amplifier.It should be noted that due to
The content that the audio frequency power amplifier process of audio power amplifier is well known to those skilled in the art, so, in the present embodiment, for sound
The audio frequency power amplifier process of frequency power amplifier is not described in detail.
Further, since also there is spare interface on the controller 12 of audio power amplifier provided by the present embodiment, so,
People are during using the audio power amplifier, so that it may by the spare interface on controller 12, in the audio power amplifier
The circuit module of the upper other functions of connection, the function of thus allowing for the audio power amplifier is more diversified, and thus full
The application demand of foot difference consumer.
It should be noted that in practical application, controller 12 can be set to any one with spare interface,
And the programmable logic device with logic calculation ability, such as: single-chip microcontroller, MCU (Microcontroller Unit, it is micro-
Control unit) etc..Alternatively, can also set pre-amplifying module in practical application other dedicated operations and put
Big device.
As it can be seen that in the present embodiment, being adjusted when passing through the target audio that controller exports sound source module, and make
It is by pre-amplifying module first to the audio signal when audio signal for meeting preset rules can be exported by obtaining sound source module
Voltage amplification is carried out, then, power is carried out to the audio signal exported via pre-amplifying module by power amplifier module
Thus amplification is achieved that audio finally, carrying out power amplifier to the audio signal exported by power amplifier module by loudspeaker
The audio frequency power amplifier function of power amplifier.Also, in the audio power amplifier provided by the present embodiment because controller also have it is reserved
Interface, such people are during using audio power amplifier, so that it may by the spare interface on controller to audio frequency power amplifier
Machine makees more functional improvements, has thus been considerably improved user experience of people during using audio power amplifier.
Based on the above embodiment, the present embodiment is further described and optimizes to technical solution, specifically, sound source module
11 include lossless bluetooth module or route input module or audio decoder module.
It is understood that in practical applications, the type for being capable of providing the sound source module 11 of target audio is varied,
Such as: lossless bluetooth module, route input module either audio decoder module, so, it in the present embodiment, can be by source of sound
Module 11 is set as any one in lossless bluetooth module, route input module either audio decoder module.
That is, providing the target audio of radio play using lossless bluetooth module, provided using route input module
The target audio of wired broadcasting is decoded the audio signal of different-format using audio decoder module, so that audio
Decoder module can export the preferable target audio of sound quality.Obviously, pass through such set-up mode, so that it may so that the audio frequency power amplifier
Machine can be applied in different actual scenes, and use of people during using audio power amplifier has thus been considerably improved
Family experience.
As it can be seen that technical solution provided by through this embodiment, can enable audio power amplifier power amplifier different type
Audio, thus just widened the scope of application of audio power amplifier significantly.
As a preferred embodiment, lossless bluetooth module is specially AC6925.
In the present embodiment, be set AC6925 for lossless bluetooth module because AC6925 not only have it is low in cost,
The excellent feature of cost performance, moreover, AC6925 also has the function of different EQ, such as: allusion, jazz, rock and roll, supper bass, stream
Capable and standard can thus make people during using audio power amplifier, can hear the music of different style of song.And
And FM function of radio receiver is also built-in in AC6925, it can thus make the audio power amplifier without plug-in radio chip
In the case of, power amplifier is carried out to program of radio station.
As it can be seen that technical solution provided by through this embodiment, can be further improved people and is using audio power amplifier
User experience in the process.
As a preferred embodiment, audio decoder module is specially VS1053.
Specifically, VS1053 can be set by audio decoder module because VS1053 can not only decode including MP3,
The music of WAV and FLAC format, moreover, VS1053 supports low-power running, it thus can be with relative reduction audio power amplifier
Energy input.In addition, VS1053 also has the function of losslessly encoding, it thus can be so that audio power amplifier can be with outputting high quality
Audio signal, thus just improve people using the audio experience in audio power amplifier.
Based on the above embodiment, the present embodiment is further described and optimizes to technical solution, refers to Fig. 2, and Fig. 2 is
The structure chart of another kind audio power amplifier provided by the embodiment of the present invention.Specifically, above-mentioned audio power amplifier further include:
For showing the play time of audio signal or the OLED16 of spectrum information or information volume；
Wherein, OLED16 is connected with the spare interface of controller 12.
It in the present embodiment, is that a kind of specific function has been made to audio power amplifier using the spare interface on controller 12
It can extension.Specifically, being by connecting OLED16 (Organic on the spare interface of controller 12 in the present embodiment
Light-Emitting Diode, Organic Light Emitting Diode) user's body of Lai Tigao user during using audio power amplifier
It tests.
That is, being the play time or and audio signal for showing audio signal on OLED16 in the present embodiment
Corresponding temporal either information volume corresponding with audio signal, such user is in the mistake using audio power amplifier
Attribute information corresponding with audio signal can not only more intuitive, be clearly viewed in journey, moreover, because OLED16 has
Have the advantages that wide viewing angle, high contrast, low-power consumption, reaction speed are fast, thus allows for user and using audio power amplifier
Possess better visual experience in the process.
As it can be seen that technical solution provided by through this embodiment, can further increase user and use audio power amplifier
User experience in the process.
Based on the above embodiment, the present embodiment is further described and optimizes to technical solution, refers to Fig. 2, and Fig. 2 is
The structure chart of another kind audio power amplifier provided by the embodiment of the present invention.Specifically, above-mentioned audio power amplifier further include:
For showing the rhythm lamp 17 of light sequence corresponding with the frequency spectrum of audio signal；
Wherein, rhythm lamp 17 is connected with the spare interface of controller 12.
It in the present embodiment, has been made to audio power amplifier another specific using the spare interface on controller 12
Function Extension, that is, being to improve user by connecting rhythm lamp 17 on the spare interface of controller 12 in the present embodiment
User experience during using audio power amplifier.
It, can be with it is also contemplated that show light sequence corresponding with the frequency spectrum of audio signal by rhythm lamp 17
So that user can not only hear the audio signal that loudspeaker 15 is issued during using audio power amplifier, moreover, also
Target user's real time inspection can be made to light sequence corresponding with the frequency spectrum of audio signal, such target user
As the rhythm come out shown by rhythm lamp 17 carries out jump and dancing, the life for thus allowing for target user is more abundant more
It is color.
As it can be seen that technical solution provided by through this embodiment, can further increase people and use audio power amplifier
Interest in the process.
Based on the above embodiment, the present embodiment is further described and optimizes to technical solution, refers to Fig. 3, and Fig. 3 is
The structure chart of another audio power amplifier provided by the embodiment of the present invention.Specifically, above-mentioned audio power amplifier further include:
The touch electronic organ 18 of target melody is played for target user；
Wherein, the input terminal for touching electronic organ 18 is connected with the spare interface of controller 12, touches the output of electronic organ 18
End is connected with the input terminal of pre-amplifying module 13.
In the present embodiment, in order to further increase user experience of people during using audio power amplifier, also exist
The touch electronic organ 18 of target melody can be played for target user by being provided in audio power amplifier, specifically, being that will touch
Electronic organ 18 is embedded on the upper end cover of audio power amplifier, and such target user may be used also during using audio power amplifier
Voluntarily to play target melody by touching electronic organ 18, and by pre-amplifying module 13 and power amplifier module 14 to mesh
Mark melody, which carries out voltage amplification and power amplification, such target user, to hear the mesh oneself played by loudspeaker 15
Mark melody, so, the power amplifier function of audio power amplifier just have more it is rich and varied, and have personalization.
It should be noted that can also be arranged on controller 12 for OLED16, rhythm lamp in practical application
17 carry out the key of pattern switching with electronic organ 18 is touched, to be cut using key to the application model of audio power amplifier
It changes, to further increase user experience of target user during using audio power amplifier.Further, it is also possible in audio frequency power amplifier
Setting can export the power modules of different DC voltages in machine, with using power module come to sound source module 11, controller 12,
Pre-amplifying module 13, power amplifier module 14, loudspeaker 15, OLED16, rhythm lamp 17 and touch electronic organ 18 are powered.
As it can be seen that technical solution provided by through this embodiment, can make function possessed by audio power amplifier more
Flexibly, various.
Based on the above embodiment, the present embodiment is further described and optimizes to technical solution, specifically, preposition amplification
Module 13 is specially AD827.
Specifically, in practical application AD827 can be set by pre-amplifying module 13, because of the gain of AD827
Bandwidth can achieve 300V/us up to 50MHz, SR, moreover, the high frequency of AD827 it is resonant it is penetrating, low frequency jump sense is superior, thus
It has been considerably improved result of broadcast of audio power amplifier during actual play.
Based on the above embodiment, the present embodiment is further described and optimizes to technical solution, specifically, power amplification
Module 14 is specially LM3886.
In the present embodiment, LM3886 can be set by power amplifier module 14, because LM3886 not only has output
Power is larger, peripheral circuit simple structure, advantage stable and reliable for performance, moreover, LM3886 is monophonic, middle power, Gao Xing
The audio frequency power amplifier IC of energy, the sound quality of high-fidelity can be exported by thus allowing for loudspeaker 15.
As it can be seen that technical solution provided by through this embodiment, the sound quality that opposite can guarantee audio power amplifier and be exported
Effect.
Based on the above embodiment, the present embodiment is further described and optimizes to technical solution, specifically, controller 12
Specially STM32.
As a preferred embodiment, being to set STM32 for controller 12, because of STM32 in the present embodiment
The not only UART of double 12 ADC with 1 μ s, 4 megabit per seconds, moreover, STM32 also has the SPI's and 18MHz of 18 megabit per seconds
Thus I/O reversal rate allows for STM32 with stronger process performance；Also, since STM32 also has more reserve
Interface, in this way it is also possible that audio power amplifier can make more functions expandings.
In addition, by it was verified that the quality distortion degree of audio power amplifier can be reduced to 0.1% using STM32, completely
The demand of sufficient HIFI (High-Fidelity, high-fidelity) thus may make user during using the audio power amplifier
Possess better audio experience.
As it can be seen that technical solution provided by through this embodiment, is further ensured that the sound quality effect that audio power amplifier is exported
Fruit.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with it is other
The difference of embodiment, same or similar part may refer to each other between each embodiment.Finally, it is also necessary to explanation
It is that herein, relational terms such as first and second and the like are used merely to an entity or operation and another
Entity or operation distinguish, and without necessarily requiring or implying between these entities or operation, there are any this actual passes
System or sequence.Moreover, the terms "include", "comprise" or any other variant thereof is intended to cover non-exclusive inclusion, from
And to include the process, method, article or equipments of a series of elements not only to include those elements, but also including not bright
The other element really listed, or further include for elements inherent to such a process, method, article, or device.Do not having
In the case where more limitations, the element that is limited by sentence "including a ...", it is not excluded that include the element process,
There is also other identical elements in method, article or equipment.
A kind of audio power amplifier provided by the present invention is described in detail above, specific case used herein
Principle and implementation of the present invention are described, the above embodiments are only used to help understand side of the invention
Method and its core concept；At the same time, for those skilled in the art, according to the thought of the present invention, in specific embodiment
And there will be changes in application range, in conclusion the contents of this specification are not to be construed as limiting the invention.
Claims (10)
1. a kind of audio power amplifier characterized by comprising
For providing the sound source module of target audio, there is spare interface, and the target audio is adjusted, so that institute
State sound source module export the controller, pre-amplifying module, power amplifier module of corresponding with preset rules audio signal with
And loudspeaker；
Wherein, the controller is connected with the input terminal of the sound source module, the output end of the sound source module with it is described preposition
The input terminal of amplification module is connected, and the output end of the pre-amplifying module is connected with the input terminal of the power amplifier module,
The output end of the power amplifier module is connected with the loudspeaker.
2. audio power amplifier according to claim 1, which is characterized in that the sound source module include lossless bluetooth module or
Route input module or audio decoder module.
3. audio power amplifier according to claim 2, which is characterized in that the lossless bluetooth module is specially AC6925.
4. audio power amplifier according to claim 2, which is characterized in that the audio decoder module is specially VS1053.
5. audio power amplifier according to claim 1, which is characterized in that further include:
For showing the play time of the audio signal or the OLED of spectrum information or information volume；
Wherein, the OLED is connected with the spare interface of the controller.
6. audio power amplifier according to claim 1, which is characterized in that further include:
For showing the rhythm lamp of light sequence corresponding with the frequency spectrum of the audio signal；
Wherein, the rhythm lamp is connected with the spare interface of the controller.
7. audio power amplifier according to claim 1, which is characterized in that further include:
The touch electronic organ of target melody is played for target user；
Wherein, the input terminal for touching electronic organ is connected with the spare interface of the controller, described to touch the defeated of electronic organ
Outlet is connected with the input terminal of the pre-amplifying module.
8. audio power amplifier according to claim 1, which is characterized in that the pre-amplifying module is specially AD827.
9. audio power amplifier according to claim 1, which is characterized in that the power amplifier module is specially LM3886.
10. audio power amplifier according to any one of claims 1 to 9, which is characterized in that the controller is specially
STM32。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910502376.5A CN110149584A (en) | 2019-06-11 | 2019-06-11 | A kind of audio power amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910502376.5A CN110149584A (en) | 2019-06-11 | 2019-06-11 | A kind of audio power amplifier |
Publications (1)
| Publication Number | Publication Date |
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| CN110149584A true CN110149584A (en) | 2019-08-20 |
Family
ID=67591038
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910502376.5A Pending CN110149584A (en) | 2019-06-11 | 2019-06-11 | A kind of audio power amplifier |
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| CN207603882U (en) * | 2017-12-12 | 2018-07-10 | 天津润桂科技有限公司 | A kind of novel automobile acoustic with Bluetooth function |
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2019
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| US8971555B2 (en) * | 2013-06-13 | 2015-03-03 | Koss Corporation | Multi-mode, wearable, wireless microphone |
| CN106535063A (en) * | 2017-01-12 | 2017-03-22 | 珠海乐港科技有限公司 | Wireless network audio high-fidelity streaming media player |
| CN207124733U (en) * | 2017-07-24 | 2018-03-20 | 四川湖山电器有限责任公司 | Audio frequency effect module application processing unit |
| CN207603882U (en) * | 2017-12-12 | 2018-07-10 | 天津润桂科技有限公司 | A kind of novel automobile acoustic with Bluetooth function |
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