CN203588693U - Voice circuit structure - Google Patents
Voice circuit structure Download PDFInfo
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- CN203588693U CN203588693U CN201320704104.1U CN201320704104U CN203588693U CN 203588693 U CN203588693 U CN 203588693U CN 201320704104 U CN201320704104 U CN 201320704104U CN 203588693 U CN203588693 U CN 203588693U
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- circuit structure
- sound circuit
- power amplifier
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- 230000002093 peripheral effect Effects 0.000 claims abstract description 17
- 230000003068 static effect Effects 0.000 claims description 5
- 230000005236 sound signal Effects 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 1
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Abstract
The utility model 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, wherein the memory module, the serial peripheral interface module and the digital volume controller are connected with the micro control unit respectively; the voice circuit structure also comprises a power amplifier and an audio output interface; the power amplifier is connected with the digital volume controller; the audio output interface is connected with the power amplifier. According to the voice circuit structure, the power amplifier is integrated in the voice circuit, so that the voice circuit is directly connected to an external loudspeaker; meanwhile, the voice circuit structure has the serial peripheral interface module, so that the voice circuit is connected to an external serial flash memory, thus the audio information can be replaced flexibly.
Description
Technical field
The utility model relates to a kind of sound circuit, relates in particular to a kind of structure of the sound circuit that connects 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, further to connect external loudspeaker 37.The inside of sound circuit generally also comprises storer 31, micro-control unit 32 and digital fader (Digital Volume Control) 33.But there is the outside too much problem of part connecting in this sound circuit structure, for example, need to connect serial flash 35, power amplifier 36 and loudspeaker 37 simultaneously and just can complete basic audio-frequency information playing function.
Figure 2 shows that the module map of another kind of existing sound circuit structure, as shown in Figure 2, sound circuit 40 comprises: storer 41, micro-control unit 42, digital fader 43, voice ROM (read-only memory) 46 and power amplifier interface 47.Wherein, voice ROM (read-only memory) 46 is used for audio information.Power amplifier interface 47 is used for connecting external power amplifier 44, further to connect external loudspeaker 45.But this sound circuit structure exists application dumb, can not change the problem of audio-frequency information.
Utility model content
The purpose of this utility model 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 outside too much problem of part connecting.
A kind of sound circuit structure of the utility model, comprise: memory module, micro-control unit, Serial Peripheral Interface (SPI) module and digital fader, this memory module, this Serial Peripheral Interface (SPI) module and this numeral fader connect respectively this micro-control unit; Power amplifier, is connected with this numeral fader; And audio output interface, be connected with this power amplifier.
According to an embodiment of a kind of sound circuit structure of the utility model, wherein, this memory module comprises: one or more in program storage (Program Memory), static RAM (SRAM) and Electrically Erasable Read Only Memory (EEPROM).
According to an embodiment of a kind of sound circuit structure of the utility model, wherein, between this power amplifier and this numeral fader, be also connected with analog/digital converter (DAC).
According to an embodiment of a kind of sound circuit structure of the utility model, 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 utility model, wherein, this sound circuit structure also comprises: I/O power interface.
According to an embodiment of a kind of sound circuit structure of the utility model, 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 utility model, wherein, this sound circuit structure also comprises: microphone input interface.
According to an embodiment of a kind of sound circuit structure of the utility model, wherein, this sound circuit structure also comprises biasing interface, for providing biasing to this power amplifier.
According to an embodiment of a kind of sound circuit structure of the utility model, wherein, this sound circuit structure also comprises clock interface.
In sum, the utility model is integrated in sound circuit inside by power amplifier, and sound circuit can be directly connected with outside loudspeaker, simultaneously, there is Serial Peripheral Interface (SPI) module, can be connected with outside serial flash, can change flexibly audio-frequency information.
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 utility model sound circuit structure;
Figure 4 shows that the module map of another embodiment of the utility model sound circuit structure;
Figure 5 shows that the module map of an embodiment again of the utility model 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 have audio input interface sound circuit structure module map;
Figure 8 shows that the structural drawing of the concrete application of a kind of sound circuit of sound circuit structure.
Embodiment
Figure 3 shows that the module map of an embodiment of the utility model sound circuit structure, as shown in Figure 3, sound circuit 1 comprises: storer 12, micro-control unit 11, digital fader 15, Serial Peripheral Interface (SPI) module 19 and power amplifier 13.
With reference to figure 3, sound circuit structure is specially, and storer 12, Serial Peripheral Interface (SPI) module 19 and digital fader 15 connect micro-control unit 11.Power amplifier 13 linking number word tone amount controllers, power amplifier 13 is for connecting external loudspeaker 18.Serial Peripheral Interface (SPI) module 19 is for connecting serial flash 16.Visible, sound circuit structure of the present utility model, the audio-frequency information that not only can need play in the rear flexible selection of connection serial flash 16, and built-in power amplifier 13.Therefore, sound circuit 1 only needs to connect serial flash 16 and loudspeaker 18 can playback of audio information.
Figure 4 shows that the module map of another embodiment of the utility model sound circuit structure, as shown in Figure 4, the sound circuit structure of the present embodiment comprises: program storage 121, static RAM 122, Erasable Programmable Read Only Memory EPROM 123, micro-control unit 11, digital fader 15, Serial Peripheral Interface (SPI) module 19, power amplifier 13 and analog/digital converter 14.The program storage 121 of the present embodiment, static RAM 122, Erasable Programmable Read Only Memory EPROM 123 are that the one of storer 12 in Fig. 1 is specifically implemented.In addition, between digital fader 15 and power amplifier 13, be connected with analog/digital converter 14, because micro-control unit 11 to the sound signal of digital fader 15 is digital form, therefore be converted to the sound signal of simulation through analog/digital converter 14, and export to power amplifier 13.Micro-control unit is 8 micro-control units, and analog/digital converter 14 is chosen as 16 analog/digital converters.
Figure 5 shows that the module map of an embodiment again of the utility model sound circuit structure, as shown in Figure 5, the structure of the sound circuit 1 of the present embodiment comprises: program storage 121, static RAM 122, Erasable Programmable Read Only Memory EPROM 123, micro-control unit 11, digital fader 15, Serial Peripheral Interface (SPI) module 19, power amplifier 13, operating key interface 21, I/O power interface 22, analog/digital converter 14 and the bias voltage module 25 of voltage is provided to power amplifier 13.Operating key interface 21 is for being connected with external operating key, to the broadcasting of audio frequency is controlled.I/O power interface 22 is for being connected with extraneous power supply, and meanwhile, I/O power interface 22, after switching on power, can provide low-voltage to Serial Peripheral Interface (SPI) module 19, so that the low-voltage of work to be provided to serial flash 16.Between power amplifier 13 and analog/digital converter 14, can be connected volume adjustment device 17, volume adjustment device 17 for example can adopt variohm.So, can realize by volume adjusting 17 sound signal of simulation is regulated, and the digital sound signal of micro-control unit 11 being exported by digital fader 15 regulates.The module map that Figure 6 shows that the another kind of connected mode of volume adjustment device, as shown in Figure 6, voice regulating device 17 is arranged on the inside of sound circuit 1.
Figure 7 shows that have audio input interface sound circuit structure module map, with reference to figure 7, on the basis of above-described embodiment, sound circuit 1 is further provided with audio input interface 23, 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.
The structural drawing that Figure 8 shows that the concrete application of a kind of sound circuit of sound circuit structure, as shown in Figure 8, for sound circuit is connected with external loudspeaker, also needs to be provided with audio output interface, and audio output interface is connected with power amplifier.In addition, for sound circuit, also need to arrange clock interface, so that the system clock of chip to be provided.Biasing interface, to provide bias voltage to power amplifier.
In sum, the utility model is integrated in sound circuit inside by power amplifier, and sound circuit can be directly connected with outside loudspeaker, simultaneously, there is Serial Peripheral Interface (SPI) module, can be connected with outside serial flash, can change flexibly audio-frequency information.
The technical solution of the utility model is disclosed as above by preferred embodiment.Those skilled in the art should recognize change and the retouching in the case of not departing from, the scope and spirit of the present utility model that the appended claim of the utility model discloses, done, within all belonging to the protection domain of claim of the present utility model.
Claims (9)
1. a sound circuit structure, comprise: memory module, micro-control unit, Serial Peripheral Interface (SPI) module and digital fader, this memory module, this Serial Peripheral Interface (SPI) module and this numeral fader connect respectively this micro-control unit, it is characterized in that, also comprise:
Power amplifier, is connected with this numeral fader; And
Audio output interface, is connected with this power amplifier.
2. sound circuit structure as claimed in claim 1, is characterized in that, this memory module comprises: one or more in program storage, static RAM and Electrically Erasable Read Only Memory.
3. sound circuit structure as claimed in claim 1, is characterized in that, between this power amplifier and this numeral fader, is also connected with analog/digital converter.
4. sound circuit structure as claimed in claim 3, 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, is characterized in that, this sound circuit structure also comprises: I/O power interface.
6. sound circuit structure as claimed in claim 1, 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, is characterized in that, this sound circuit structure also comprises: microphone input interface.
8. sound circuit structure as claimed in claim 1, is characterized in that, this sound circuit structure also comprises biasing interface, for providing biasing to this power amplifier.
9. sound circuit structure as claimed in claim 1, is characterized in that, this sound circuit structure also comprises clock interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320704104.1U CN203588693U (en) | 2013-11-08 | 2013-11-08 | Voice circuit structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320704104.1U CN203588693U (en) | 2013-11-08 | 2013-11-08 | Voice circuit structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203588693U true CN203588693U (en) | 2014-05-07 |
Family
ID=50586570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320704104.1U Expired - Lifetime CN203588693U (en) | 2013-11-08 | 2013-11-08 | Voice circuit structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203588693U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104869510A (en) * | 2015-05-26 | 2015-08-26 | 周玲 | Voice circuit structure |
-
2013
- 2013-11-08 CN CN201320704104.1U patent/CN203588693U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104869510A (en) * | 2015-05-26 | 2015-08-26 | 周玲 | Voice circuit structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140507 |