CN107318069B - Automatic audio playing system and method - Google Patents
Automatic audio playing system and method Download PDFInfo
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- CN107318069B CN107318069B CN201710555294.8A CN201710555294A CN107318069B CN 107318069 B CN107318069 B CN 107318069B CN 201710555294 A CN201710555294 A CN 201710555294A CN 107318069 B CN107318069 B CN 107318069B
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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
- H04R3/00—Circuits for transducers, loudspeakers or microphones
-
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
Abstract
The invention relates to the technical field of automobiles, and provides an automatic audio playing system and method, which are applied to automobiles, and comprise a sensor detection circuit, a microcontroller and a voice playing circuit, wherein the sensor detection circuit comprises a first photoelectric sensor and a second photoelectric sensor, the first photoelectric sensor is used for detecting surrounding targets of the automobiles, and when the targets are detected to exist around the automobiles, the microcontroller is used for controlling the voice playing circuit to play first voices; and the second photoelectric sensor is used for detecting an object in the automobile, when the object is detected in the automobile, the microcontroller controls the voice playing circuit to switch and play the second voice.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to an automatic audio playing system and an automatic audio playing method.
Background
With the development of science and technology, automobiles become more and more indispensable in people's lives, and become an important riding tool. In this context, various activities are being conducted around automobiles, such as automobile sales, etc., and at the same time, schools are being conducted for teaching automobiles. In the processes of automobile exhibition, automobile sales and automobile teaching, a salesperson or a teacher needs to repeatedly introduce the performance of six directions of an automobile, so that the working strength of the salesperson or the teacher is extremely high, and especially when many customers are available, the salesperson with few customers is difficult to consider each customer, and the salesperson cannot deal with the inquiry of the customers one by one, which can lead to poor customer experience.
Disclosure of Invention
The present invention is directed to an audio automatic playing system and method for improving the above-mentioned problems.
In order to achieve the above object, the technical scheme adopted by the embodiment of the invention is as follows:
the invention provides an automatic audio playing system which is applied to automobiles and comprises a sensor detection circuit, a microcontroller and a voice playing circuit, wherein the sensor detection circuit, the microcontroller and the voice playing circuit are electrically connected in sequence; the sensor detection circuit comprises a first photoelectric sensor and a second photoelectric sensor, and the first photoelectric sensor and the second photoelectric sensor are respectively and electrically connected with the microcontroller; the first photoelectric sensor is arranged outside a vehicle body of the vehicle and is used for detecting whether an object exists around the vehicle, and if the object exists around the vehicle, a first level signal is sent to the microcontroller; the second photoelectric sensor is arranged in the automobile body of the automobile and is used for detecting whether an object exists in the automobile, and if the object exists in the automobile, a second level signal is sent to the microcontroller; and the microcontroller is used for controlling the voice playing circuit to play the first voice when receiving the first level signal and controlling the voice playing circuit to switch and play the second voice when receiving the second level signal.
Further, the first photoelectric sensors are distributed at the front end, the rear end, the headlight and the vehicle side outside the vehicle body.
Further, the number of the second photoelectric sensors is 2, and the second photoelectric sensors are distributed at the front end and the rear end of the inside of the vehicle body.
Further, the voice playing circuit comprises a voice playing chip and a loudspeaker, wherein the input end of the voice playing chip is electrically connected with the microcontroller, and the output end of the voice playing chip is electrically connected with the loudspeaker.
Further, the audio automatic playing system further comprises a power circuit, and the power circuit is electrically connected with the sensor detection circuit, the microcontroller and the voice playing circuit respectively.
Further, the power supply circuit comprises a storage battery, and the storage battery is electrically connected with the sensor detection circuit, the microcontroller and the voice playing circuit respectively.
Further, the microcontroller is a single-chip microcomputer.
Further, the audio automatic playing system further comprises an alarm device, wherein the alarm device is electrically connected with the singlechip and is used for alarming when the audio automatic playing system fails.
Further, the alarm device is an alarm lamp.
The automatic audio playing method is applied to the automatic audio playing system, and the automatic audio playing system is applied to an automobile and comprises a sensor detection circuit, a microcontroller and a voice playing circuit, wherein the sensor detection circuit, the microcontroller and the voice playing circuit are electrically connected in sequence; the sensor detection circuit comprises a first photoelectric sensor and a second photoelectric sensor, and the first photoelectric sensor and the second photoelectric sensor are respectively and electrically connected with the microcontroller; the first photoelectric sensor is arranged outside a vehicle body of the vehicle and is used for detecting whether an object exists around the vehicle, and if the object exists around the vehicle, a first level signal is sent to the microcontroller; the second photoelectric sensor is arranged in the automobile body of the automobile and is used for detecting whether an object exists in the automobile, and if the object exists in the automobile, a second level signal is sent to the microcontroller; and the microcontroller is used for controlling the voice playing circuit to play the first voice when receiving the first level signal and controlling the voice playing circuit to switch and play the second voice when receiving the second level signal. The audio automatic playing method comprises the following steps: the first photoelectric sensor detects whether an object exists around the automobile, and if the object exists around the automobile, a first level signal is sent to the microcontroller; the second photoelectric sensor detects whether an object exists in the automobile, and if the object exists in the automobile, a second level signal is sent to the microcontroller; when the microcontroller receives the first level signal, the voice playing circuit is controlled to play the first voice, and when the microcontroller receives the second level signal, the voice playing circuit is controlled to switch and play the second voice.
Compared with the prior art, the invention has the following beneficial effects: according to the audio automatic playing system and method provided by the invention, the first photoelectric sensor is used for detecting the surrounding target objects of the automobile, and when the detected surrounding target objects are located, the microcontroller controls the voice playing circuit to play first voice; and the second photoelectric sensor is used for detecting an object in the automobile, when the object is detected in the automobile, the microcontroller controls the voice playing circuit to switch and play the second voice.
In order to make the above objects, features and advantages of the present invention more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 shows a block diagram of an audio automatic playing system according to an embodiment of the present invention.
Fig. 2 shows a circuit diagram of a voice playing circuit according to an embodiment of the present invention.
Fig. 3 shows a circuit diagram of a power supply circuit provided by an embodiment of the invention.
Fig. 4 shows a flowchart of an audio automatic playing system according to an embodiment of the present invention.
Icon: 100-an automatic audio playing system; 110-a sensor detection circuit; 111-a first photosensor; 113-a second photosensor; 120-a microcontroller; 130-a voice playing circuit; 140-an alarm device; 150-a power supply circuit; 131-horn; 151-a power supply; 153-step-down circuit; 155-voltage stabilizing circuit.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by a person skilled in the art without making any inventive effort, are intended to be within the scope of the present invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures. Meanwhile, in the description of the present invention, the terms "first", "second", and the like are used only to distinguish the description, and are not to be construed as indicating or implying relative importance.
Referring to fig. 1, fig. 1 is a block diagram illustrating an audio automatic playing system 100 according to an embodiment of the invention. The audio automatic playing system 100 is applied to an automobile and comprises a sensor detection circuit 110, a microcontroller 120, a voice playing circuit 130, an alarm device 140 and a power circuit 150. The sensor detection circuit 110, the microcontroller 120 and the voice playing circuit 130 are electrically connected in sequence, the microcontroller 120 is electrically connected with the alarm device 140, and the power supply circuit 150 is electrically connected with the sensor detection circuit 110, the microcontroller 120, the voice playing circuit 130 and the alarm device 140 respectively.
In the present embodiment, the sensor detection circuit 110 includes a first photosensor 111 and a second photosensor 113, and the first photosensor 111 and the second photosensor 113 are electrically connected to the microcontroller 120 and the power supply circuit 150, respectively.
In this embodiment, the first photosensor 111 is installed outside the body of the automobile, and is used for detecting whether an object exists around the automobile, and if the object exists around the automobile, the first level signal is sent to the microcontroller 120. In one embodiment, there are a plurality of first photosensors 111 distributed at the front end, rear end, headlight and vehicle side of the vehicle body outside, and if any one of the first photosensors 111 detects a target object, a first level signal is sent to the microcontroller 120. The target may be, but is not limited to, a customer, a student, etc., and the first level signal may be a low level signal.
In the present embodiment, the first photosensor 111 may be, but is not limited to, an E3Z-L61 photosensor, and has advantages of simple structure, reliable performance, and the like.
In this embodiment, the second photoelectric sensor 113 is installed inside the body of the automobile, and is configured to detect whether an object exists inside the automobile, and if it is detected that an object exists inside the automobile, send a second level signal to the microcontroller 120. In one embodiment, there are 2 second photosensors 113 distributed at the front end and the rear end of the vehicle body, and if any one of the second photosensors 113 detects a target object, a second level signal is sent to the microcontroller 120. The target may be, but is not limited to, a customer, a student, etc., the second level signal may be a low level signal, and the signal strengths of the first level signal and the second level signal are different.
In this embodiment, the second photoelectric sensor 113 may be, but is not limited to, an E3Z-L61 photoelectric sensor, and has advantages of simple structure, reliable performance, and the like.
In this embodiment, the microcontroller 120 is configured to control the voice playing circuit 130 to play the first voice when receiving the first level signal sent by the first photosensor 111, and control the voice playing circuit 130 to switch to play the second voice when receiving the second level signal sent by the second photosensor 113. As an embodiment, the microcontroller 120 controls the voice playing circuit 130 to play the first voice when receiving the first level signal sent by any one of the first photosensors 111 for the first time, and controls the voice playing circuit 130 to switch to play the second voice when receiving the second level signal sent by any one of the second photosensors 113 for the first time.
In this embodiment, the first voice may be voice information describing design, material, performance, advantages, and the like of the exterior of the body of the automobile, and the second voice may be voice information describing design, material, performance, advantages, and the like of the interior of the body of the automobile.
In this embodiment, the microcontroller 120 may be an integrated circuit chip with signal processing capability, and the microcontroller 120 may be a general-purpose processor including a central processing unit (Central Processing Unit, CPU), a network processor (Network Processor, NP), a voice processor, a video processor, etc., and may also be a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component. As one embodiment, the microcontroller 120 may be, but is not limited to, a single-chip microcomputer.
Referring to fig. 2, fig. 2 is a circuit diagram of a voice playing circuit 130 according to an embodiment of the invention. The voice playing circuit 130 is characterized in that the voice playing chip U1 and the loudspeaker 131 are arranged, the input end of the voice playing chip U1 is electrically connected with the microcontroller 120, and the output end of the voice playing chip U1 is electrically connected with the loudspeaker 131.
In this embodiment, the voice playing chip U1 includes output terminals MICP and MICN, a bias terminal MBS, a voice signal reference voltage segment VREF, an analog circuit power supply terminal VDDA, and a digital circuit power supply terminal VDDIO.
As an embodiment, the output terminal MICP is electrically connected to the horn 131 through the first capacitor C1, and the output terminal MICN is electrically connected to the horn 131 through the second capacitor C2.
As an embodiment, the bias terminal MBS is electrically connected to the horn 131 and grounded through a capacitor connected in parallel to the fourth capacitor C4 by the third capacitor C3.
As an embodiment, the acoustic signal reference voltage segment VREF is grounded through a capacitor ground of the fifth capacitor C5 in parallel with the sixth capacitor C6.
As an embodiment, the power supply terminal VDDA of the analog circuit is grounded through a seventh capacitor C7, and is electrically connected to the power supply circuit 150 through an LC filter circuit composed of an eighth capacitor C8 and a first inductor L1, the eighth capacitor C8 is electrically connected between one end of the first inductor L1 and ground, and the ninth capacitor C9 is electrically connected between the other end of the first inductor L1 and ground.
In the present embodiment, the voice playing chip U1 may be, but is not limited to, an LD3320 chip.
In this embodiment, the speaker 131 includes a microphone M1, the output end MICP of the voice playing chip U1 is electrically connected to the positive electrode of the microphone M1 through the first capacitor C1, and the output end MICN of the voice playing chip U1 is electrically connected to the negative electrode of the microphone M1 through the second capacitor C2.
As one embodiment, the horn 131 is mounted on the roof outer side of the automobile.
In this embodiment, the alarm device 140 is electrically connected to the microcontroller 120 and to the power circuit 150. The alarm device 140 is used for alarming when the audio automatic playing system 100 fails. As one embodiment, the alarm device 140 is an alarm lamp.
Referring to fig. 3, fig. 3 is a circuit diagram of a power supply circuit 150 according to an embodiment of the invention. The power circuit 150 is electrically connected to the sensor detection circuit 110, the microcontroller 120, the voice playing circuit 130 and the alarm device 140, respectively, and is used for providing power for the sensor detection circuit 110, the microcontroller 120, the voice playing circuit 130 and the alarm device 140.
In this embodiment, the power supply circuit 150 includes a power supply 151, a voltage-reducing circuit 153 and a voltage-stabilizing circuit 155, the power supply 151, the voltage-reducing circuit 153 and the voltage-stabilizing circuit 155 are electrically connected in sequence, and the voltage-stabilizing circuit 155 is electrically connected with the sensor detection circuit 110, the microcontroller 120, the voice playing circuit 130 and the alarm device 140, respectively.
In this embodiment, the power supply 151 may be an external battery or a battery of the vehicle itself, and the power supply 151 is electrically connected to the step-down circuit 153.
In this embodiment, the voltage-reducing circuit 153 is used to reduce the output voltage of the power supply 151 and provide voltages required by the normal operation of the sensor detection circuit 110, the microcontroller 120, the voice playing circuit 130 and the alarm device 140.
In the present embodiment, the voltage stabilizing circuit 155 includes a voltage stabilizing chip U2, a tenth capacitor C10, an eleventh capacitor C11, and a twelfth capacitor C12, and the voltage stabilizing chip U2 includes an input terminal VIN, an output terminal VOUT, and a ground terminal GND. As an implementation manner, the input end VIN of the voltage stabilizing chip U2 is electrically connected to pin 1 of the power supply 151 via the voltage reducing circuit 153, and is connected in series with the tenth capacitor C10 to be grounded; the output end VOUT of the voltage stabilizing chip U2 is connected in series with an eleventh capacitor C11 to be grounded, and the two ends of the eleventh capacitor C11 are connected in parallel with a twelfth capacitor C12; the output terminal VOUT of the voltage stabilizing chip U2 is further electrically connected to the voice signal reference voltage segment VREF, the analog circuit power supply terminal VDDA, the digital circuit power supply terminal VDDIO of the voice playing chip U1, the sensor detecting circuit 110, the microcontroller 120, and the alarm device 140, respectively. The voltage stabilizing circuit 155 is configured to stabilize the voltage of the power supply 151 to about 5V and then supply power to the audio automatic playing system 100.
Referring to fig. 4, fig. 4 shows a flowchart of an automatic audio playing system 100 according to an embodiment of the invention, and the workflow of the automatic audio playing system 100 is as follows:
in step S101, the first photosensor 111 detects whether there is an object around the vehicle, and if it detects that there is an object around the vehicle, it sends a first level signal to the microcontroller 120.
In this embodiment, there are a plurality of first photosensors 111 distributed at the front end, the rear end, the headlight and the vehicle side outside the vehicle body, and if any one of the first photosensors 111 detects a target object, a first level signal is sent to the microcontroller 120.
In step S102, the second photosensor 113 detects whether or not an object is present in the interior of the vehicle, and if it is detected that an object is present in the interior of the vehicle, it sends a second level signal to the microcontroller 120.
In this embodiment, there are 2 second photosensors 113 distributed at the front end and the rear end of the interior of the vehicle body, and if any one of the second photosensors 113 detects a target object, a second level signal is sent to the microcontroller 120.
In step S103, the microcontroller 120 controls the voice playing circuit 130 to play the first voice when receiving the first level signal, and controls the voice playing circuit 130 to switch to play the second voice when receiving the second level signal.
In this embodiment, the microcontroller 120 controls the voice playing circuit 130 to play the first voice when receiving the first level signal sent by any one of the first photosensors 111 for the first time, and controls the voice playing circuit 130 to switch to play the second voice when receiving the second level signal sent by any one of the second photosensors 113 for the first time.
The working principle of the audio automatic playing system 100 provided by the embodiment of the invention is as follows: first, when any one of the first photosensors 111 distributed at the front end, rear end, headlight and vehicle side outside the vehicle body detects that an object exists around the vehicle, a first level signal is sent to the microcontroller 120; secondly, when any one of the second photoelectric sensors 113 distributed at the front end and the rear end inside the body of the automobile detects that an object exists inside the automobile, a second level signal is sent to the microcontroller 120; finally, the microcontroller 120 controls the voice playing circuit 130 to play the first voice when receiving the first level signal sent by any one of the first photosensors 111 for the first time, and controls the voice playing circuit 130 to switch to play the second voice when receiving the second level signal sent by any one of the second photosensors 113 for the first time.
In summary, the system and the method for automatically playing audio provided by the invention are applied to automobiles, and comprise a sensor detection circuit, a microcontroller and a voice playing circuit, wherein the sensor detection circuit, the microcontroller and the voice playing circuit are electrically connected in sequence; the sensor detection circuit comprises a first photoelectric sensor and a second photoelectric sensor, and the first photoelectric sensor and the second photoelectric sensor are respectively and electrically connected with the microcontroller; the first photoelectric sensor is arranged outside a vehicle body of the vehicle and is used for detecting whether an object exists around the vehicle, and if the object exists around the vehicle, a first level signal is sent to the microcontroller; the second photoelectric sensor is arranged in the automobile body of the automobile and is used for detecting whether an object exists in the automobile, and if the object exists in the automobile, a second level signal is sent to the microcontroller; and the microcontroller is used for controlling the voice playing circuit to play the first voice when receiving the first level signal and controlling the voice playing circuit to switch and play the second voice when receiving the second level signal.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
Claims (8)
1. The automatic audio playing system is characterized by being applied to an automobile and comprising a sensor detection circuit, a microcontroller and a voice playing circuit, wherein the sensor detection circuit, the microcontroller and the voice playing circuit are electrically connected in sequence;
the sensor detection circuit comprises a first photoelectric sensor and a second photoelectric sensor, and the first photoelectric sensor and the second photoelectric sensor are respectively and electrically connected with the microcontroller;
the plurality of first photoelectric sensors are distributed at the front end, the rear end, the headlight and the vehicle side outside the vehicle body and are used for detecting whether a target object exists around the vehicle, and if any one of the first photoelectric sensors detects that the target object exists around the vehicle, a first level signal is sent to the microcontroller; the number of the second photoelectric sensors is 2, the second photoelectric sensors are distributed at the front end and the rear end of the inside of the automobile body and are used for detecting whether an object exists in the automobile, and if any one of the second photoelectric sensors detects that the object exists in the automobile, a second level signal is sent to the microcontroller;
the microcontroller is used for controlling the voice playing circuit to play first voice when receiving the first level signal and controlling the voice playing circuit to switch and play second voice when receiving the second level signal;
the first voice is voice information for introducing design, material, performance and advantages of the outer part of the automobile body, and the second voice is voice information for introducing design, material, performance and advantages of the inner part of the automobile body.
2. The audio automatic playback system of claim 1, wherein the voice playback circuit comprises a voice playback chip and a speaker, wherein an input of the voice playback chip is electrically connected to the microcontroller, and wherein an output of the voice playback chip is electrically connected to the speaker.
3. The audio automatic playback system of claim 1, further comprising a power circuit electrically connected to the sensor detection circuit, the microcontroller, and the voice playback circuit, respectively.
4. The audio automatic playback system of claim 3, wherein the power supply circuit comprises a battery electrically connected to the sensor detection circuit, the microcontroller, and the voice playback circuit, respectively.
5. The audio automatic playback system of claim 1, wherein the microcontroller is a single-chip microcomputer.
6. The audio automatic playback system of claim 5, further comprising an alarm device electrically coupled to the monolithic computer for alerting when the audio automatic playback system fails.
7. The audio automatic playback system of claim 6, wherein the alarm device is an alarm light.
8. An audio automatic playing method, applied to the audio automatic playing system of any one of claims 1 to 7, comprising:
the first photoelectric sensors distributed at the front end, the rear end, the headlight and the vehicle side of the vehicle body detect whether a target object exists around the vehicle, and if any one of the first photoelectric sensors detects that the target object exists around the vehicle, a first level signal is sent to the microcontroller;
2 second photoelectric sensors distributed at the front end and the rear end of the inside of the automobile body detect whether an object exists in the inside of the automobile, and if any one of the second photoelectric sensors detects that the object exists in the inside of the automobile, a second level signal is sent to the microcontroller;
the microcontroller controls the voice playing circuit to play first voice when receiving the first level signal, and controls the voice playing circuit to switch and play second voice when receiving the second level signal;
the first voice is voice information for introducing design, material, performance and advantages of the outer part of the automobile body, and the second voice is voice information for introducing design, material, performance and advantages of the inner part of the automobile body.
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| CN201710555294.8A CN107318069B (en) | 2017-07-10 | 2017-07-10 | Automatic audio playing system and method |
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| CN201710555294.8A CN107318069B (en) | 2017-07-10 | 2017-07-10 | Automatic audio playing system and method |
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| CN107318069B true CN107318069B (en) | 2023-07-28 |
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| CN107318069A (en) | 2017-11-03 |
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