CN104869510A - Voice circuit structure - Google Patents
Voice circuit structure Download PDFInfo
- Publication number
- CN104869510A CN104869510A CN201510292737.XA CN201510292737A CN104869510A CN 104869510 A CN104869510 A CN 104869510A CN 201510292737 A CN201510292737 A CN 201510292737A CN 104869510 A CN104869510 A CN 104869510A
- Authority
- CN
- China
- Prior art keywords
- circuit structure
- sound circuit
- power amplifier
- interface
- micro
- Prior art date
- 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.)
- Pending
Links
Landscapes
- Circuit For Audible Band Transducer (AREA)
Abstract
The application discloses a voice circuit structure. The voice circuit structure comprises a memory module, a micro-control unit, a serial peripheral interface module and a digital volume controller; the memory module, the serial peripheral interface module and the digital volume controller are respectively connected with the micro-control unit, wherein the structure further comprises a power amplifier connected with the digital volume controller, an audio output interface connected with the power amplifier. Through the adoption of the voice circuit structure disclosed by the application, the power amplifier is integrated in the voice circuit, so that the voice circuit can be directly connected with an external loudspeaker; and meanwhile, the serial peripheral interface module can be connected with an external serial flash memory so as to flexibly replace audio information.
Description
Technical field
The application relates to a kind of sound circuit, particularly relates to a kind of structure connecting the sound circuit of external loudspeaker.
Background technology
Figure 1 shows that a kind of module map of existing sound circuit structure, as shown in Figure 1, sound circuit 30 includes a Serial Peripheral Interface (SPI) (SPI) 34 and a power amplifier interface 38.Serial Peripheral Interface (SPI) 34 is used for connecting serial flash (SPI Flash) 35, and serial flash 35 can audio information.Power amplifier interface 38 is used for connecting external power amplifier (Power Amplifier) 36, to connect external loudspeaker 37 further.The inside of sound circuit generally also comprises memory 31, micro-control unit 32 and digital volume controller (Digital Volume Control) 33.Such as, but there is the too much problem of the outside part connected in this sound circuit structure, needs to connect serial flash 35, power amplifier 36 and loudspeaker 37 and just can complete basic audio-frequency information playing function simultaneously.
Figure 2 shows that the module map of another kind of existing sound circuit structure, as shown in Figure 2, sound circuit 40 comprises: memory 41, micro-control unit 42, digital volume controller 43, voice read-only memory 46 and power amplifier interface 47.Wherein, voice read-only memory 46 is used for audio information.Power amplifier interface 47 is used for connecting external power amplifier 44, to connect external loudspeaker 45 further.But it is dumb to there is application in this sound circuit structure, can not change the problem of audio-frequency information.
Application content
The object of the application is to provide a kind of sound circuit structure, dumb in application in order to solve existing sound circuit structure, can not change audio-frequency information, the problem that the outside part connected is too much.
A kind of sound circuit structure of the application, comprise: memory module, micro-control unit, Serial Peripheral Interface (SPI) module and digital volume controller, this memory module, this Serial Peripheral Interface (SPI) module and this digital volume controller connect this micro-control unit respectively; Power amplifier, is connected with this digital volume controller; And audio output interface, be connected with this power amplifier.
According to an embodiment of a kind of sound circuit structure of the application, wherein, this memory module comprises: one or more in program storage (Program Memory), static random access memory (SRAM) and Electrically Erasable Read Only Memory (EEPROM).
According to an embodiment of a kind of sound circuit structure of the application, wherein, analog/digital converter (DAC) is also connected with between this power amplifier and this digital volume controller.
According to an embodiment of a kind of sound circuit structure of the application, wherein, this analog/digital converter is 16 analog/digital converters, and this micro-control unit is 8 micro-control units.
According to an embodiment of a kind of sound circuit structure of the application, wherein, this sound circuit structure also comprises: I/O power interface.
According to an embodiment of a kind of sound circuit structure of the application, wherein, this sound circuit structure also comprises: operating key input interface, is connected with this micro-control unit.
According to an embodiment of a kind of sound circuit structure of the application, wherein, this sound circuit structure also comprises: microphone input interface.
According to an embodiment of a kind of sound circuit structure of the application, wherein, this sound circuit structure also comprises biased interface, for providing biased to this power amplifier.
According to an embodiment of a kind of sound circuit structure of the application, wherein, this sound circuit structure also comprises clock interface.
In sum, power amplifier is integrated in sound circuit inside by the application, sound circuit directly can be connected with outside loudspeaker, meanwhile, have Serial Peripheral Interface (SPI) module, can be connected, can change audio-frequency information flexibly with the serial flash of outside.
Accompanying drawing explanation
Figure 1 shows that a kind of module map of existing sound circuit structure;
Figure 2 shows that the module map of another kind of existing sound circuit structure;
Figure 3 shows that the module map of an embodiment of the application's sound circuit structure;
Figure 4 shows that the module map of another embodiment of the application's sound circuit structure;
Figure 5 shows that the module map of an embodiment again of the application's sound circuit structure;
Figure 6 shows that the module map of the another kind of connected mode of volume adjustment device;
Figure 7 shows that the sound circuit structure with audio input interface module map;
Figure 8 shows that the structure chart of a kind of sound circuit embody rule of sound circuit structure.
Embodiment
Figure 3 shows that the module map of an embodiment of the application's sound circuit structure, as shown in Figure 3, sound circuit 1 comprises: memory 12, micro-control unit 11, digital volume controller 15, Serial Peripheral Interface (SPI) module 19 and power amplifier 13.
With reference to figure 3, sound circuit structure is specially, and memory 12, Serial Peripheral Interface (SPI) module 19 and digital volume controller 15 connect micro-control unit 11.Power amplifier 13 linking number word tone amount controller, power amplifier 13 is for connecting external loudspeaker 18.Serial Peripheral Interface (SPI) module 19 is for connecting serial flash 16.Visible, the sound circuit structure of the application, can not only select the audio-frequency information that need play flexibly after connecting serial flash 16, and built-in power amplifier 13.Therefore, sound circuit 1 only need to connect serial flash 16 and loudspeaker 18 namely can playback of audio information.
Figure 4 shows that the module map of another embodiment of the application's sound circuit structure, as shown in Figure 4, the sound circuit structure of the present embodiment comprises: program storage 121, static random access memory 122, Erasable Programmable Read Only Memory EPROM 123, micro-control unit 11, digital volume controller 15, Serial Peripheral Interface (SPI) module 19, power amplifier 13 and analog/digital converter 14.The program storage 121 of the present embodiment, static random access memory 122, Erasable Programmable Read Only Memory EPROM 123 are that the one of memory 12 in Fig. 1 is specifically implemented.In addition, analog/digital converter 14 is connected with between digital volume controller 15 and power amplifier 13, audio signal due to micro-control unit 11 to digital volume controller 15 is digital form, therefore be converted to the audio signal of simulation through analog/digital converter 14, and export to power amplifier 13.Micro-control unit is 8 micro-control units, then analog/digital converter 14 is chosen as 16 analog/digital converters.
Figure 5 shows that the module map of an embodiment again of the application's sound circuit structure, as shown in Figure 5, the structure of the sound circuit 1 of the present embodiment comprises: program storage 121, static random access memory 122, Erasable Programmable Read Only Memory EPROM 123, micro-control unit 11, digital volume controller 15, Serial Peripheral Interface (SPI) module 19, power amplifier 13, operating key interface 21, I/O power interface 22, analog/digital converter 14 and provide the bias voltage module 25 of voltage to power amplifier 13.Operating key interface 21 for being connected with external operating key, to control the broadcasting of audio frequency.I/O power interface 22 is for being connected with extraneous power supply, and meanwhile, I/O power interface 22 after being powered up, serially peripheral interface module 19 can provide low-voltage, provides the low-voltage of work with serially flash memory 16.Can be connected volume adjustment device 17 between power amplifier 13 with analog/digital converter 14, volume adjustment device 17 such as can adopt variable resistance.So, can realize being regulated by the audio signal of volume adjusting 17 to simulation, and be regulated by the audio signal of the numeral of digital volume controller 15 pairs of micro-control units 11 outputs.Figure 6 shows that the module map of the another kind of connected mode of volume adjustment device, as shown in Figure 6, voice adjusting device 17 is arranged on the inside of sound circuit 1.
Figure 7 shows that the sound circuit structure with audio input interface module map, with reference to figure 7, on the basis of above-described embodiment, sound circuit 1 is provided with audio input interface 23 further, audio input interface 23 can be connected with microphone 24, to carry out the input of audio frequency.
Certainly, in fact the loudspeaker in above-described embodiment can also replace with earphone, and those skilled in the art can select flexibly.
Figure 8 shows that the structure chart of a kind of sound circuit embody rule of sound circuit structure, as shown in Figure 8, in order to be connected with external loudspeaker by sound circuit, also need to be provided with audio output interface, audio output interface is connected with power amplifier.In addition, sound circuit is also needed to arrange clock interface, to provide the system clock of chip.Biased interface, to provide bias voltage to power amplifier.
In sum, power amplifier is integrated in sound circuit inside by the application, sound circuit directly can be connected with outside loudspeaker, meanwhile, have Serial Peripheral Interface (SPI) module, can be connected, can change audio-frequency information flexibly with the serial flash of outside.
The technical scheme of the application is disclosed as above by preferred embodiment.The change that those skilled in the art do when should recognize the scope and spirit of the application disclosed in the claim do not departed from appended by the application and retouching, within the protection range all belonging to the claim of the application.
Claims (9)
1. a sound circuit structure, comprise: memory module, micro-control unit, Serial Peripheral Interface (SPI) module and digital volume controller, this memory module, this Serial Peripheral Interface (SPI) module and this digital volume controller connect this micro-control unit respectively, it is characterized in that, also comprise: power amplifier, be connected with this digital volume controller; And audio output interface, be connected with this power amplifier.
2. sound circuit structure as claimed in claim 1, it is characterized in that, this memory module comprises: one or more in program storage, static random access memory and Electrically Erasable Read Only Memory.
3. sound circuit structure as claimed in claim 1, is characterized in that, be also connected with analog/digital converter between this power amplifier and this digital volume controller.
4. sound circuit structure as claimed in claim 3, it is characterized in that, this analog/digital converter is 16 analog/digital converters, and this micro-control unit is 8 micro-control units.
5. sound circuit structure as claimed in claim 1, it is characterized in that, this sound circuit structure also comprises: I/O power interface.
6. sound circuit structure as claimed in claim 1, it is characterized in that, this sound circuit structure also comprises: operating key input interface, is connected with this micro-control unit.
7. sound circuit structure as claimed in claim 1, it is characterized in that, this sound circuit structure also comprises: microphone input interface.
8. sound circuit structure as claimed in claim 1, it is characterized in that, this sound circuit structure also comprises biased interface, for providing biased to this power amplifier.
9. sound circuit structure as claimed in claim 1, it is characterized in that, this sound circuit structure also comprises clock interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510292737.XA CN104869510A (en) | 2015-05-26 | 2015-05-26 | Voice circuit structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510292737.XA CN104869510A (en) | 2015-05-26 | 2015-05-26 | Voice circuit structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104869510A true CN104869510A (en) | 2015-08-26 |
Family
ID=53914942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510292737.XA Pending CN104869510A (en) | 2015-05-26 | 2015-05-26 | Voice circuit structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104869510A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201332385Y (en) * | 2008-12-24 | 2009-10-21 | 比亚迪股份有限公司 | Digital audio power amplifier and audio processing device |
| CN201438753U (en) * | 2009-06-09 | 2010-04-14 | 深圳市宝业恒实业发展有限公司 | Network audio digital amplifier |
| CN202602876U (en) * | 2012-05-24 | 2012-12-12 | 东莞市富驰电子科技有限公司 | Circuit structure of voice control module |
| US20140121796A1 (en) * | 2012-10-31 | 2014-05-01 | Acer Incorporated | Audio processing device |
| CN203588693U (en) * | 2013-11-08 | 2014-05-07 | 盛群半导体股份有限公司 | Voice circuit structure |
| US8816182B2 (en) * | 2009-01-10 | 2014-08-26 | Kevin Arthur Robertson | Digital audio connections for portable handheld computing devices |
-
2015
- 2015-05-26 CN CN201510292737.XA patent/CN104869510A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201332385Y (en) * | 2008-12-24 | 2009-10-21 | 比亚迪股份有限公司 | Digital audio power amplifier and audio processing device |
| US8816182B2 (en) * | 2009-01-10 | 2014-08-26 | Kevin Arthur Robertson | Digital audio connections for portable handheld computing devices |
| CN201438753U (en) * | 2009-06-09 | 2010-04-14 | 深圳市宝业恒实业发展有限公司 | Network audio digital amplifier |
| CN202602876U (en) * | 2012-05-24 | 2012-12-12 | 东莞市富驰电子科技有限公司 | Circuit structure of voice control module |
| US20140121796A1 (en) * | 2012-10-31 | 2014-05-01 | Acer Incorporated | Audio processing device |
| CN203588693U (en) * | 2013-11-08 | 2014-05-07 | 盛群半导体股份有限公司 | Voice circuit structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105874404B (en) | Number with adaptive gain can integrate low dropout regulator | |
| CN102857228A (en) | Electronic equipment and audio output control method thereof | |
| JP2012004734A5 (en) | ||
| CN204993749U (en) | USB earphone and high -fidelity audio playback system | |
| CN103279436A (en) | Configuration method of functions of chip pin and chip | |
| CN103152670A (en) | Audio frequency processing circuit and earphone | |
| CN101628675A (en) | Elevator voice announcer | |
| CN203588693U (en) | Voice circuit structure | |
| CN102427569A (en) | Headset interface and GPIO (General Purpose Input/Output) interface multiplex circuit structure | |
| CN104869510A (en) | Voice circuit structure | |
| CN201134257Y (en) | On-vehicle DVD system | |
| CN106487354A (en) | Music player | |
| CN203039879U (en) | Integrated sound equipment | |
| CN207607589U (en) | A kind of special bluetooth module decompression integrated board of balance car | |
| TW200828244A (en) | Common voltage adjustment apparatus | |
| US20110035032A1 (en) | Audio signal processing device | |
| CN204157019U (en) | Audio decoder chip and electronic equipment | |
| CN207321519U (en) | A kind of intelligent sound box based on wireless communication module | |
| CN206004900U (en) | Raise one's voice equipment and terminal assembly | |
| CN109347448A (en) | A kind of circuit and its device of portable preamplifier | |
| CN207766515U (en) | Sound equipment with control function | |
| CN208337878U (en) | A kind of vocal effects' device | |
| CN201655328U (en) | Audio player with mobile storage function | |
| CN203573658U (en) | Audio play circuit | |
| CN213280015U (en) | Audio circuit and multifunctional sound box using same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150826 |