CN203734823U - Audio device - Google Patents
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- CN203734823U CN203734823U CN201320865427.9U CN201320865427U CN203734823U CN 203734823 U CN203734823 U CN 203734823U CN 201320865427 U CN201320865427 U CN 201320865427U CN 203734823 U CN203734823 U CN 203734823U
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Abstract
The utility model discloses an audio device which comprises a control chip, a signal amplifying circuit, a power amplifying device and a loudspeaker device. The input end of the signal amplifying circuit is connected with a signal output pin of the control chip. The output end of the signal amplifying circuit is connected with the input end of the power amplifying device. The output end of the power amplifying device is connected with the loudspeaker device. The control chip is used for generating and outputting analog audio signals. The signal amplifying circuit is used for amplifying and outputting the analog audio signals received from the control chip. The power amplifying device is used for amplifying the powers of the analog audio signal signals received from the signal amplifying circuit. The loudspeaker device is used for converting the analog audio signals received from the power amplifying device and outputting. The audio device provided by the utility model has functions of: realizing an alarm bell function by the control chip, reducing realizing cost of the alarm bell in the audio equipment, and providing more selections for alarm bells.
Description
Technical field
The utility model relates to voicefrequency circuit technical field, particularly a kind of audio devices.
Background technology
At present, various mini audio products on the market all have the business functions such as timing machine open/close, quarter-bell, and this series products is mainly to adopt buzzer to realize as the sound-producing device of alarm clock, and the sound that buzzer sends is single, and more sharp-pointed, ear-piercing, cost is also relatively high.In addition, timing machine open/close function does not have auditory tone cues substantially, very inconvenient.
Foregoing is only understood the technical solution of the utility model for auxiliary, does not represent and admits that foregoing is prior art.
Utility model content
Main purpose of the present utility model, for a kind of audio devices is provided, is intended to reduce the cost of quarter-bell realization and provides more quarter-bell to select.
For achieving the above object, the utility model proposes a kind of audio devices, this audio devices comprises control chip, signal amplification circuit, power amplification device and loudspeaker arrangement, the input of described signal amplification circuit is connected with the signal output pin of described control chip, and the output of described signal amplification circuit is connected with the input of described power amplification device; The output of described power amplification device is connected with described loudspeaker arrangement;
Wherein, described control chip, for generating and export simulated audio signal;
Described signal amplification circuit, for amplifying output by the described simulated audio signal receiving from described control chip;
Described power amplification device, for carrying out power amplification by the described simulated audio signal receiving from described signal amplification circuit;
Described loudspeaker arrangement, for being converted to the described simulated audio signal receiving from described power amplification device voice signal output.
Preferably, described audio devices also comprises digital audio and video signals input interface and for the digital audio and video signals receiving being converted to the audio signal processing unit of simulated audio signal, the input of described audio signal processing unit is connected with described digital audio and video signals input interface, and the output of described audio signal processing unit is connected with the input of described power amplification device.
Preferably, described audio signal processing unit comprises the first sound channel input and second sound channel input; Described audio devices also comprises passage diverter switch, for switching controls simulated audio signal or digital audio and video signals input, and the simulated audio signal of input or digital audio and video signals is carried out to two-way output; Described passage diverter switch comprises trigger end, first signal input, secondary signal input, the first signal output corresponding with described first signal input, and the secondary signal output corresponding with described secondary signal input, the trigger end of described passage diverter switch is connected with the control output end of described control chip; Described first signal input is connected with the output of described signal amplification circuit; Described secondary signal input is described digital audio and video signals input interface; Described first signal output is connected with the first sound channel input of described audio treatment unit, and described secondary signal output is connected with the second sound channel input of described audio signal processing unit.
Preferably, described control chip is single-chip microcomputer.
Preferably, described signal amplification circuit comprises the first power supply, the first triode, the first electric capacity, the first resistance, the second resistance and the 3rd resistance, one end of described the first resistance is connected with the analog signal output pin of described control chip, the other end of described the first resistance is connected with the base stage of described the first triode, the grounded emitter of described the first triode, the collector electrode of described the first triode is connected with described the first power supply through described the second resistance, the signal output part of the very described signal amplification circuit of the current collection of described the first triode; One end of described the 3rd resistance is connected with the base stage of described the first triode, other end ground connection; Described the first Capacitance parallel connection is at the two ends of the 3rd resistance.
Preferably, described passage diverter switch comprises gating chip, the second power supply, the 3rd power supply, the 4th resistance, the 5th resistance, the 6th resistance and the 7th resistance, the power supply input pin of described gating chip is connected with the power output end of described the second power supply, the grounding leg ground connection of described gating chip; The first control inputs pin of described gating chip and the second control inputs pin interconnect to form the described trigger end of described passage diverter switch, and be divided into two-way after interconnection, one tunnel is connected with a control output end of described control chip, and another road is connected with the 3rd power supply through described the 4th resistance; The first input pin and second input pin of the first input pin of the first sound channel that described gating chip comprises the first sound channel output pin, second sound channel output pin, be connected with described the first sound channel output pin respective signal and the second input pin, the second sound channel that is connected with described second sound channel output pin respective signal; The first input pin of the first input pin of described the first sound channel, described second sound channel and one end of described the 5th resistance interconnect between two, and the other end of described the 5th resistance is the first signal input of described passage diverter switch; The second input pin of described the first sound channel is connected with one end of described the 6th resistance, the second input pin of described second sound channel is connected with one end of described the 7th resistance, and the other end of the other end of described the 6th resistance and described the 7th resistance forms the secondary signal input of described passage diverter switch.
Preferably, described passage diverter switch also comprises the 8th resistance, the 9th resistance and the tenth resistance, one end ground connection of described the 8th resistance, and the other end is connected between described the 5th resistance and the first input pin of described the first sound channel; One end ground connection of described the 9th resistance, the other end is connected between described the 6th resistance and the second input pin of described the first sound channel; One end ground connection of described the tenth resistance, the other end is connected between described the 7th resistance and the second input pin of described second sound channel.
Preferably, described passage diverter switch also comprises the second electric capacity, the 3rd electric capacity and the 4th electric capacity, one end of described the second electric capacity is connected with the common port of the 8th resistance with the 5th resistance, and the other end of described the second electric capacity is connected with the first input pin of described the first sound channel and the first input pin of second sound channel respectively; One end of described the 3rd electric capacity is connected with the common port of the 9th resistance with the 6th resistance, and the other end of described the 3rd electric capacity is connected with the second input pin of described the first sound channel; One end of described the 4th electric capacity, is connected with the common port of described the 7th resistance and the tenth resistance, and the other end of described the 4th electric capacity is connected with the second input pin of described second sound channel.
Preferably, described passage diverter switch also comprises the 5th electric capacity and the 6th electric capacity, and one end of described the 5th electric capacity is connected with the first sound channel output pin of described gating chip, and the other end is described the first sound channel output; One end of described the 6th electric capacity is connected with the second sound channel output pin of described gating chip, and the other end is described second sound channel output.
Preferably, described passage diverter switch also comprises the 7th electric capacity and the 8th electric capacity; One end of described the 7th electric capacity, one end of described the 8th electric capacity, the power output end of described the second power supply and the power supply input pin of described gating chip interconnect between two, the other end ground connection of described the 7th electric capacity, the other end ground connection of described the 8th electric capacity.
The audio devices the utility model proposes, generate and export simulated audio signal to signal amplification circuit by control chip, signal amplification circuit amplifies this simulated audio signal and exports power amplification device to, by power amplification device, this simulated audio signal is carried out to power amplification, finally by loudspeaker arrangement, simulated audio signal after power amplification is converted to voice signal output, thereby realize alarm, compared with prior art, this audio devices is realized the cost of alarming method not only kind lower but also sound is more.
Brief description of the drawings
Fig. 1 is the circuit block diagram of the utility model audio devices preferred embodiment;
Fig. 2 is a part of electrical block diagram of the utility model audio devices preferred embodiment;
Fig. 3 is another part electrical block diagram of the utility model audio devices preferred embodiment.
Realization, functional characteristics and the advantage of the utility model object, in connection with embodiment, are described further with reference to accompanying drawing.
Embodiment
Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
Shown in Fig. 1, Fig. 2 and Fig. 3, Fig. 1 is the circuit block diagram of the utility model audio devices preferred embodiment; Fig. 2 is a part of electrical block diagram of the utility model audio devices preferred embodiment; Fig. 3 is another part electrical block diagram of the utility model audio devices preferred embodiment.
The utility model provides a kind of audio devices, with reference to Fig. 1, in one embodiment, this audio devices comprises control chip 10, signal amplification circuit 20, power amplification device 30 and loudspeaker arrangement 40, the input of described signal amplification circuit 20 is connected with the signal output pin OUT1 of described control chip 10, and the output of described signal amplification circuit 20 is connected with the input of described power amplification device 30; The output of described power amplification device 30 is connected with described loudspeaker arrangement 40.
Particularly, above-mentioned control chip 10, for generating and export simulated audio signal.This control chip 10 can be editable control chip 10 conventional in audio chip, single-chip microcomputer or audio frequency apparatus.By control chip 10 is edited, the sine wave signal of its output certain rule is realized.Be understandable that, because control chip 10 can be edited, the simulated audio signal of its output can be changed, therefore, the sound kind of output also can be abundanter.And the sine wave signal of exporting due to control chip 10 is rule variation, makes the sound of output smoother, melodious.
Above-mentioned signal amplification circuit 20, for amplifying output by the described simulated audio signal receiving from described control chip 10.Be understandable that, the analog signal that control chip 10 is exported is fainter, adopts the analog signal that this amplifying circuit can export control chip 10 to amplify, wherein, amplification be current signal.
Above-mentioned power amplification device 30, for carrying out power amplification by the described simulated audio signal receiving from described signal amplification circuit 20.This power amplification device 30 receives the simulated audio signal after signal amplification circuit 20 amplifies, then the simulated audio signal after this amplification is carried out to power amplification.
Above-mentioned loudspeaker arrangement 40, for being converted to the described simulated audio signal receiving from described power amplification device 30 voice signal output.Wherein, loudspeaker arrangement 40 can be made up of one or multiple loudspeaker, concrete sound size degree set as required.
The utility model device generates and exports simulated audio signal to signal amplification circuit 20 by control chip 10, signal amplification circuit 20 amplifies this simulated audio signal and exports power amplification device 30 to, by power amplification device 30, this simulated audio signal is carried out to power amplification, finally by loudspeaker arrangement 40, simulated audio signal after power amplification is converted to voice signal output, thereby realize alarm, compared with prior art, this audio devices is realized the cost of alarming method not only kind lower but also sound is more.
Further, with reference to Fig. 1, Fig. 2 and Fig. 3, in order to enrich the kind of quarter-bell, above-mentioned audio devices also comprises digital audio and video signals input interface 50 and for the digital audio and video signals receiving being converted to the audio signal processing unit 60 of simulated audio signal, the input of described audio signal processing unit 60 is connected with described digital audio and video signals input interface 50, and the output of described audio signal processing unit 60 is connected with the input of described power amplification device 30.Wherein, digital audio and video signals input interface 50 comprises USB interface or SD card interface, can input digital audio signal by digital audio and video signals input interface 50, thus can make this audio devices can export more quarter-bell sound.In this audio signal processing unit 60, be provided with digital to analog converter, the digital audio and video signals of input can be converted to analog signal by digital to analog converter.
Further, with reference to Fig. 1, Fig. 2 and Fig. 3, described audio signal processing unit 60 comprises the first sound channel input IN1 and second sound channel input IN2; Described audio devices also comprises passage diverter switch 70, for switching controls simulated audio signal or digital audio and video signals input, and the simulated audio signal of input or digital audio and video signals is carried out to two-way output.
Wherein, described passage diverter switch 70 comprises trigger end J, first signal input L_in, secondary signal input R_in, the first signal output L_out corresponding with described first signal input L_in, and the secondary signal output R_out corresponding with described secondary signal input R_in, the trigger end J of described passage diverter switch 70 is connected with the control output end I/O of described control chip 10; Described first signal input L_in is connected with the output of described signal amplification circuit 20; Described secondary signal input R_in is described digital audio and video signals input interface 50; Described first signal output L_out is connected with the first sound channel input IN1 of described audio treatment unit, and described secondary signal output R_out is connected with the second sound channel input IN2 of described audio signal processing unit 60.In the present embodiment, can adopt the passage diverter switch 70 of two passages to realize control simulation audio signal or digital audio and video signals is exported, make this audio devices can switch and select quarter-bell.
Further, with reference to Fig. 1, Fig. 2 and Fig. 3, above-mentioned signal amplification circuit 20 comprises the first power supply VCC1, the first triode Q1, the first capacitor C 1, the first resistance R 1, the second resistance R 2 and the 3rd resistance R 3.In the present embodiment, this first triode Q1 is preferably NPN type triode.
Wherein, one end of above-mentioned the first resistance R 1 with in described control chip 10(Fig. 2, represent with MCU) analog signal output pin be connected, the other end of described the first resistance R 1 is connected with the base stage of described the first triode Q1, the grounded emitter of described the first triode Q1, the collector electrode of described the first triode Q1 is connected with described the first power supply VCC1 through described the second resistance R 2, the signal output part of the very described signal amplification circuit 20 of the current collection of described the first triode Q1; One end of described the 3rd resistance R 3 is connected with the base stage of described the first triode Q1, other end ground connection; Described the first capacitor C 1 is connected in parallel on the two ends of the 3rd resistance R 3.
Further, with reference to Fig. 1, Fig. 2 and Fig. 3, above-mentioned passage diverter switch 70 comprises gating chip U1, the second power supply VCC2, the 3rd power supply VCC3, the 4th resistance R 4, the 5th resistance R 5, the 6th resistance R 6 and the 7th resistance R 7.In this preferred embodiment, the model of this gating chip U1 is 74HC4052.
Wherein, the power supply input pin Vcc of above-mentioned gating chip U1 is connected with the power output end of described the second power supply VCC2, the grounding leg GND ground connection of described gating chip U1; The first control inputs pin A of described gating chip U1 and the second control inputs pin B interconnect to form the trigger end J of described passage diverter switch 70, and be divided into two-way after interconnection, one tunnel is connected with a control output end of described control chip 10, and another road is connected with the 3rd power supply VCC3 through described the 4th resistance R 4; The first input pin Y1 and the second input pin Y2 of the first input pin X1 of the first sound channel that described gating chip U1 comprises the first sound channel output pin X0, second sound channel output pin Y0, be connected with described the first sound channel output pin X0 respective signal and the second input pin X2, the second sound channel that is connected with described second sound channel output pin Y0 respective signal; The first input pin Y1 of the first input pin X1 of described the first sound channel, described second sound channel and one end of described the 5th resistance R 5 interconnect between two, and the other end of described the 5th resistance R 5 is the first signal input L_in of described passage diverter switch 70; The second input pin X2 of described the first sound channel is connected with one end of described the 6th resistance R 6, the second input pin Y2 of described second sound channel is connected with one end of described the 7th resistance R 7, and the other end of the other end of described the 6th resistance R 6 and described the 7th resistance R 7 forms the secondary signal input R_in of described passage diverter switch 70.Wherein, the first control inputs pin A is for controlling the first input pin X1 of the first sound channel and the second input pin X2 and the first sound channel output pin X0 signal communication of the first sound channel output pin X0 signal communication or control the first sound channel, and the second control inputs pin B is for controlling the first input pin Y1 of second sound channel and the second input pin Y2 and the second sound channel output pin Y0 signal communication of second sound channel output pin Y0 signal communication or control second sound channel.In the present embodiment, the first control inputs pin A and the second control inputs pin B are interconnected, while making the control output pin I/O output low and high level of control chip 10, can make the first input pin X1 and the first sound channel output pin X0 signal communication in first sound road, and control the first input pin Y1 and the second sound channel output pin Y0 signal communication of second sound channel, or, make the second input pin X2 and the first sound channel output pin X0 signal communication of the first sound channel, and control the second input pin Y2 and the second sound channel output pin Y0 signal communication of second sound channel, to realize the same audio signal of output to power amplification device 30.
It should be noted that, in the time of normal work, need to be by this gating chip U1 enable pin EN and negative pressure input pin VEE ground connection.
Further, with reference to Fig. 1, Fig. 2 and Fig. 3, above-mentioned passage diverter switch 70 also comprises the 8th resistance R 8, the 9th resistance R 9 and the tenth resistance R 10.Wherein the 8th resistance R 8 and the 5th resistance R 5 form bleeder circuit and can in the time that input signal is excessive, protect chip; in like manner, the bleeder circuit that the bleeder circuit that the 9th resistance R 9 and the 6th resistance R 6 form and the tenth resistance R 10 and the 7th resistance R 7 form is all the effect of playing protection chip when preventing that input signal is excessive.
Wherein, one end ground connection of above-mentioned the 8th resistance R 8, the other end is connected between the first input pin X1 of described the 5th resistance R 5 and described the first sound channel; One end ground connection of described the 9th resistance R 9, the other end is connected between the second input pin X2 of described the 6th resistance R 6 and described the first sound channel; One end ground connection of described the tenth resistance R 10, the other end is connected between the second input pin Y2 of described the 7th resistance R 7 and described second sound channel.
Further, above-mentioned passage diverter switch 70 also comprises the second capacitor C 2, the 3rd capacitor C 3 and the 4th capacitor C 4.This second capacitor C 2, the 3rd capacitor C 3 and the 4th capacitor C 4 are respectively used to the signal input line road input direct-current signal that prevents that it is corresponding, play every straight-through friendship effect in the present embodiment.
Wherein, one end of above-mentioned the second capacitor C 2 is connected with the common port of the 8th resistance R 8 with the 5th resistance R 5, and the other end of described the second capacitor C 2 is connected with the first input pin X1 of described the first sound channel and the first input pin Y1 of second sound channel respectively; One end of described the 3rd capacitor C 3 is connected with the common port of the 9th resistance R 9 with the 6th resistance R 6, and the other end of described the 3rd capacitor C 3 is connected with the second input pin X2 of described the first sound channel; One end of described the 4th capacitor C 4, is connected with the common port of the 7th resistance R 7 and the tenth resistance R 10, and the other end of described the 4th capacitor C 4 is connected with the second input pin Y2 of described second sound channel.
Further, with reference to Fig. 1, Fig. 2 and Fig. 3, above-mentioned passage diverter switch 70 also comprises the 5th capacitor C 5 and the 6th capacitor C 6.The 5th capacitor C 5 and the 6th capacitor C 6, for to isolating through the audio signal of gating chip U1 output, prevent direct current signal input power amplification device 30.
Wherein, one end of above-mentioned the 5th capacitor C 5 is connected with the first described sound channel output pin X0, and the other end is described the first sound channel output L_out; One end of described the 6th capacitor C 6 is connected with the second sound channel output pin Y0 of described gating chip U1, and the other end is described second sound channel output R_out.
Further, with reference to Fig. 1, Fig. 2 and Fig. 3, above-mentioned passage diverter switch 70 also comprises the 7th capacitor C 7 and the 8th capacitor C 8.The 7th capacitor C 7 and the 8th capacitor C 8 are for carrying out filtering to the input power of gating chip U1.
Wherein, the power output end of one end of above-mentioned the 7th capacitor C 7, one end of described the 8th capacitor C 8, described the second power supply VCC2 and the power supply input pin Vcc of described gating chip U1 interconnect between two, the other end ground connection of described the 7th capacitor C 7, the other end ground connection of described the 8th capacitor C 8.
The foregoing is only preferred embodiment of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or conversion of equivalent flow process that utilizes the utility model specification and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (10)
1. an audio devices, comprise power amplification device and loudspeaker arrangement, it is characterized in that, also comprise control chip and signal amplification circuit, the input of described signal amplification circuit is connected with the signal output pin of described control chip, and the output of described signal amplification circuit is connected with the input of described power amplification device; The output of described power amplification device is connected with described loudspeaker arrangement;
Wherein, described control chip, for generating and export simulated audio signal;
Described signal amplification circuit, for amplifying output by the described simulated audio signal receiving from described control chip;
Described power amplification device, for carrying out power amplification by the described simulated audio signal receiving from described signal amplification circuit;
Described loudspeaker arrangement, for being converted to the described simulated audio signal receiving from described power amplification device voice signal output.
2. audio devices according to claim 1, it is characterized in that, described audio devices also comprises digital audio and video signals input interface and for the digital audio and video signals receiving being converted to the audio signal processing unit of simulated audio signal, the input of described audio signal processing unit is connected with described digital audio and video signals input interface, and the output of described audio signal processing unit is connected with the input of described power amplification device.
3. audio devices according to claim 2, is characterized in that, described audio signal processing unit comprises the first sound channel input and second sound channel input; Described audio devices also comprises passage diverter switch, for switching controls simulated audio signal or digital audio and video signals input, and the simulated audio signal of input or digital audio and video signals is carried out to two-way output; Described passage diverter switch comprises trigger end, first signal input, secondary signal input, the first signal output corresponding with described first signal input, and the secondary signal output corresponding with described secondary signal input, the trigger end of described passage diverter switch is connected with the control output end of described control chip; Described first signal input is connected with the output of described signal amplification circuit; Described secondary signal input is described digital audio and video signals input interface; Described first signal output is connected with the first sound channel input of described audio treatment unit, and described secondary signal output is connected with the second sound channel input of described audio signal processing unit.
4. audio devices according to claim 1, is characterized in that, described control chip is single-chip microcomputer.
5. audio devices according to claim 1, it is characterized in that, described signal amplification circuit comprises the first power supply, the first triode, the first electric capacity, the first resistance, the second resistance and the 3rd resistance, one end of described the first resistance is connected with the analog signal output pin of described control chip, the other end of described the first resistance is connected with the base stage of described the first triode, the grounded emitter of described the first triode, the collector electrode of described the first triode is connected with described the first power supply through described the second resistance, the signal output part of the very described signal amplification circuit of the current collection of described the first triode, one end of described the 3rd resistance is connected with the base stage of described the first triode, other end ground connection, described the first Capacitance parallel connection is at the two ends of the 3rd resistance.
6. audio devices according to claim 3, it is characterized in that, described passage diverter switch comprises gating chip, the second power supply, the 3rd power supply, the 4th resistance, the 5th resistance, the 6th resistance and the 7th resistance, the power supply input pin of described gating chip is connected with the power output end of described the second power supply, the grounding leg ground connection of described gating chip; The first control inputs pin of described gating chip and the second control inputs pin interconnect to form the described trigger end of described passage diverter switch, and be divided into two-way after interconnection, one tunnel is connected with a control output end of described control chip, and another road is connected with the 3rd power supply through described the 4th resistance; The first input pin and second input pin of the first input pin of the first sound channel that described gating chip comprises the first sound channel output pin, second sound channel output pin, be connected with described the first sound channel output pin respective signal and the second input pin, the second sound channel that is connected with described second sound channel output pin respective signal; The first input pin of the first input pin of described the first sound channel, described second sound channel and one end of described the 5th resistance interconnect between two, and the other end of described the 5th resistance is the first signal input of described passage diverter switch; The second input pin of described the first sound channel is connected with one end of described the 6th resistance, the second input pin of described second sound channel is connected with one end of described the 7th resistance, and the other end of the other end of described the 6th resistance and described the 7th resistance forms the secondary signal input of described passage diverter switch.
7. audio devices according to claim 6, it is characterized in that, described passage diverter switch also comprises the 8th resistance, the 9th resistance and the tenth resistance, one end ground connection of described the 8th resistance, and the other end is connected between described the 5th resistance and the first input pin of described the first sound channel; One end ground connection of described the 9th resistance, the other end is connected between described the 6th resistance and the second input pin of described the first sound channel; One end ground connection of described the tenth resistance, the other end is connected between described the 7th resistance and the second input pin of described second sound channel.
8. audio devices according to claim 7, it is characterized in that, described passage diverter switch also comprises the second electric capacity, the 3rd electric capacity and the 4th electric capacity, one end of described the second electric capacity is connected with the common port of the 8th resistance with the 5th resistance, and the other end of described the second electric capacity is connected with the first input pin of described the first sound channel and the first input pin of second sound channel respectively; One end of described the 3rd electric capacity is connected with the common port of the 9th resistance with the 6th resistance, and the other end of described the 3rd electric capacity is connected with the second input pin of described the first sound channel; One end of described the 4th electric capacity, is connected with the common port of described the 7th resistance and the tenth resistance, and the other end of described the 4th electric capacity is connected with the second input pin of described second sound channel.
9. audio devices according to claim 8, it is characterized in that, described passage diverter switch also comprises the 5th electric capacity and the 6th electric capacity, and one end of described the 5th electric capacity is connected with the first sound channel output pin of described gating chip, and the other end is described the first sound channel output; One end of described the 6th electric capacity is connected with the second sound channel output pin of described gating chip, and the other end is described second sound channel output.
10. audio devices according to claim 9, is characterized in that, described passage diverter switch also comprises the 7th electric capacity and the 8th electric capacity; One end of described the 7th electric capacity, one end of described the 8th electric capacity, the power output end of described the second power supply and the power supply input pin of described gating chip interconnect between two, the other end ground connection of described the 7th electric capacity, the other end ground connection of described the 8th electric capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320865427.9U CN203734823U (en) | 2013-12-25 | 2013-12-25 | Audio device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320865427.9U CN203734823U (en) | 2013-12-25 | 2013-12-25 | Audio device |
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| CN203734823U true CN203734823U (en) | 2014-07-23 |
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| CN201320865427.9U Expired - Fee Related CN203734823U (en) | 2013-12-25 | 2013-12-25 | Audio device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104853290A (en) * | 2015-04-29 | 2015-08-19 | 青岛歌尔声学科技有限公司 | Audio signal processing circuit and electronic equipment with same |
| CN113423043A (en) * | 2021-06-21 | 2021-09-21 | 康佳集团股份有限公司 | Audio transmission system based on 5G module |
-
2013
- 2013-12-25 CN CN201320865427.9U patent/CN203734823U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104853290A (en) * | 2015-04-29 | 2015-08-19 | 青岛歌尔声学科技有限公司 | Audio signal processing circuit and electronic equipment with same |
| CN104853290B (en) * | 2015-04-29 | 2018-09-28 | 青岛歌尔声学科技有限公司 | A kind of audio signal processing circuit and electronic equipment with the circuit |
| CN113423043A (en) * | 2021-06-21 | 2021-09-21 | 康佳集团股份有限公司 | Audio transmission system based on 5G module |
| CN113423043B (en) * | 2021-06-21 | 2022-05-31 | 康佳集团股份有限公司 | Audio transmission system based on 5G module |
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Granted publication date: 20140723 Termination date: 20201225 |