CN119277295A - A digital audio control system and method - Google Patents
A digital audio control system and method Download PDFInfo
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- CN119277295A CN119277295A CN202411475258.7A CN202411475258A CN119277295A CN 119277295 A CN119277295 A CN 119277295A CN 202411475258 A CN202411475258 A CN 202411475258A CN 119277295 A CN119277295 A CN 119277295A
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Abstract
The invention discloses a digital audio control system and a digital audio control method, wherein the digital audio control system comprises a plurality of control devices and a plurality of earphone devices, the control devices comprise a first Bluetooth module and a key module, the earphone devices comprise a second Bluetooth module and a microphone module, the earphone devices are communicated with the control devices through the first Bluetooth module and the second Bluetooth module, the control devices are electrically connected with audio equipment, each audio equipment is connected with one control device, a first key of the key module is pressed to realize communication with the earphone devices, the first Bluetooth module sends a communication protocol to the corresponding earphone devices to realize communication, and the earphone devices which are not matched with the first keys cannot carry out Bluetooth communication with the control devices. The voice amplifying device is simple in structure, and the voice amplifying device can be used for amplifying the voice of a teacher in a high reduction degree by utilizing the control device and the earphone device to match with the existing audio equipment so as to reduce the burden of the voice of the teacher.
Description
Technical Field
The invention belongs to the field of education digital conference control sound amplification, and particularly relates to a digital audio control system and a digital audio control method.
Background
The current teacher's lecture and conference's public address mode is that the honeybee megaphone, and the sound quality of honeybee megaphone is not very good, exists pronunciation distortion, even can produce the squeak sometimes, also receive the electromagnetic interference of other radio waves very easily, in addition because little stereo set hangs in teacher's waist, the propagation distance of sound is limited, and the nearly sound that leaves is too big, and the far away sound is unclear, and especially the little stereo set height of primary school teacher is just against sitting in seat student's ear, and the injury to student's ear is very big, and student and parent also have very big suggestion to this, and some local education departments even the hair do prohibit the use of honeybee megaphone.
In addition, the microphone is connected with the sound equipment in a mode that the microphone comprises a hand-held microphone and a collarband microphone, and the like, and the products play a great role in relieving fatigue of the throat of a teacher, but have the defects that the hand-held microphone always needs to be held by one hand, the sound volume can change along with shaking of hands, the lecture time is too long, hands can be tired sometimes, a lecturer needs to use both hands (such as experiments and drawing), if the microphone is held by one hand, the operation of two-hand operation is influenced, the teacher needs to write a great amount on a blackboard, the shaking amplitude of the hands can be larger, the space of a classroom of middle and primary schools is limited, the probability of producing the whistle is high, the collarband microphone has the defects that when the clothes are thin, the fixing on the clothes is difficult, the clothes is easy to turn over, the hands are not right in front of the mouth, the sound definition is not ideal, and the duration is short.
The system is used in a few developed areas, and can only be used in certain courses, such as experimental lessons and art lessons, because each student has a mobile terminal device, the management and control of the mobile terminal device are very challenging, especially for students with weak self-control capability, the teacher is required to explain when the system is used, the problem of fatigue of the teacher is solved in an original way, and a microphone is generally matched, so that the system is put out for years, but the schools in developed areas are very rarely used, and the defects are obvious. It is therefore important to have a digital audio control system and method that overcomes the above-mentioned drawbacks.
Disclosure of Invention
In order to solve at least one of the above technical problems, in one aspect, the present invention provides a digital audio control system, including a plurality of control devices and a plurality of earphone devices;
The control device comprises a first Bluetooth module and a key module, the earphone device comprises a second Bluetooth module and a microphone module, the earphone device is communicated with the control device through the first Bluetooth module and the second Bluetooth module, and the key module controls the first Bluetooth module to send corresponding communication signals to the matched earphone device.
The microphone module is fixedly connected with the earphone device through the memory connecting rod, and the microphone module is electrically connected with the earphone device.
According to the technical scheme, the memory connecting rod can be bent so that the microphone module is close to the mouth of a user, and the distance can be automatically adjusted according to the needs.
Or by existing algorithms to reduce or eliminate howling.
The earphone comprises a microphone module, a control device and an audio device, wherein the microphone module is used for receiving sound collected by the microphone module of the earphone device, and the control device is electrically connected with the audio device and outputs the sound through a loudspeaker of the audio device.
The control device also comprises a first audio power amplifier module and a display screen module. The control device also comprises a first power supply port and a voltage stabilizing module.
The earphone device also comprises a second audio power amplifier module, a second power supply port and a charging protection module.
The control device comprises a shell, a mounting cavity is formed in the shell, a mounting hole is formed in the mounting cavity, the mounting hole is smaller than the section of the mounting cavity, and an elastic clamping arm matched with the mounting hole is fixed in the mounting cavity. The shell internal fixation has the stopper, the stopper with the interval has between the elasticity joint arm control shell internal fixation has the circuit board, first bluetooth module, button module, first audio power amplifier module, first power supply mouth and voltage stabilizing module install in on the circuit board, offer the fretwork that is used for display screen, button module to expose on the shell.
Through the technical scheme, the plug-in connector is convenient to install and fix, a plug-in connector can be installed on a wall body, the plug-in connector is inserted into the installation hole, and the elastic clamping arm abuts against the plug-in connector, so that stable plug-in connection is realized.
The key module comprises a plurality of discipline keys, a switch key, an acquisition key, a volume key, a matching key and a disconnection key, wherein the earphone device can be matched with the control device through the matching key when being configured for the first time, and the communication is disconnected through the disconnection key when the earphone device is required to be disconnected. The earphone device is a bone conduction earphone, and the key module further comprises a standby key.
A teaching audio control method, comprising the steps of:
Each room is provided with a control device and an earphone device, and the control device is electrically connected with the audio equipment;
pressing a switch key of a key module in the control device to enable the control device to be in a starting state;
Pressing a matching key of the key module in a starting state of the control device to enable communication protocols between a first Bluetooth module of the control device and a second Bluetooth module of the earphone device in each room to be matched with each other;
When the subject key of the key module is pressed, the first Bluetooth module of the control device in the room and the second Bluetooth module of the earphone device are mutually connected in wireless communication, and the first Bluetooth module of the control device shields the earphone devices in other rooms;
When the microphone module of the earphone device receives the audio, the earphone device transmits the audio signal to the audio equipment through the first audio power amplification module of the control device and plays the sound.
The encryption method adopts a wireless communication protocol coding mode.
The earphone device can be connected with the control device and the mobile phone of the teacher.
Compared with the prior art, the voice amplifying device has the advantages that the voice amplifying device is simple in structure, long in lecture time of teachers each day, high in speaking volume, and high in harm to the voice, and many teachers also have sphagitis, even some people suffer from occupational diseases.
The bone conduction earphone is adopted by the earphone device, the earphone is worn on two ears, the positions of the earphone are fixed, two ears are released, two hands can be completely released during a school, and convenience is brought to the operation of the hands of a teacher (experiments and the like).
Because of the breakthrough of the earphone in low power consumption, the duration of the earphone lectures is more than twelve hours, the problem of the duration of the earphone is effectively solved, and the audio-visual education device is directly connected with a power supply. In the aspect of volume control, the audio-visual educational device and the bone conduction earphone are provided with 15-gear volume adjustable, so that teachers with different voices can achieve the best effect in the public address of a classroom. In addition, the total weight of the bone conduction earphone and the connecting rod headset is only about thirty grams, and the weight of the bone conduction earphone and the connecting rod headset is not different from that of a pair of glasses, so that the bone conduction earphone and the connecting rod headset are comfortable to wear.
For example, in universities, students have a large number of bluetooth connection devices such as mobile terminals, and some students also attempt to perform bluetooth matching with audio-visual educational devices, which can disturb the original matching sequence of the devices. The invention has address locking capability, the audio-visual educational device, namely the control device of the invention, can only be matched with a special bone conduction earphone, the communication safety can be ensured by adopting the directional encryption, and the malicious entry of other equipment is prevented.
The control device can adjust the volume according to different use occasions, so that teachers with different voices can obtain the best effect in the sound amplifying of classrooms, and meanwhile, the control device has the function of low power consumption. The earphone device lectures duration is more than twelve hours, the problem of duration of earphone use is effectively solved, and the control device can be directly connected with a power supply.
Drawings
FIG. 1 is a perspective view of a control device of the present invention;
FIG. 2 is a perspective view of a control device of the present invention in cross-section;
FIG. 3 is a schematic diagram of a system architecture according to the present invention;
FIG. 4 is a schematic diagram of a circuit distribution in a control device;
FIG. 5 is a second schematic diagram of the circuit distribution in the control device;
Fig. 6 is a circuit diagram of a first bluetooth module of the control device;
FIG. 7 is a circuit diagram of a control device key module, a first power supply port and a voltage stabilizing module;
FIG. 8 is a circuit diagram of a control device display screen module;
FIG. 9 is a circuit diagram of a first audio power amplifier module;
FIG. 10 is a block diagram of a headset device interface;
Reference numerals:
1, a shell, a 101 mounting cavity, a 102 mounting hole, a 103 elastic clamping arm, a 104 limiting block, a 105 circuit board, a 106 mounting lug and a 107 space;
2 control device, 201 display screen, 202 key module;
3 earphone device, 301 microphone module and 302 memory connecting rod.
Detailed Description
The invention will be described in detail below with respect to certain specific embodiments thereof in order to better understand the invention and thereby to more clearly define the scope of the invention as claimed. It should be noted that the following description is only some embodiments of the inventive concept and is only a part of examples of the present invention, wherein the specific direct description of the related structures is only for the convenience of understanding the present invention, and the specific features do not naturally and directly limit the implementation scope of the present invention.
Referring to the drawings, the invention adopts the following technical scheme, and in one aspect, the invention provides a digital audio control system which comprises a plurality of control devices 2 and a plurality of earphone devices 3;
The control device 2 comprises a first Bluetooth module and a key module, the earphone device 3 comprises a second Bluetooth module and a microphone module 301, the earphone device 3 communicates with the control device 2 through the first Bluetooth module and the second Bluetooth module, and the key module controls the first Bluetooth module to send communication signals corresponding to the first Bluetooth module to the matched earphone device 3.
The microphone module 301 is fixedly connected to the earphone device 3 through the memory link 302, and the microphone module 301 is electrically connected to the earphone device 3.
Through the technical scheme, the memory connecting rod 302 can be bent to enable the microphone module 301 to be close to the mouth of a user, the distance can be automatically adjusted according to the needs, and the microphone is very close to the mouth, so that the self-excitation phenomenon of the sound amplifying device is better restrained, and the occurrence of howling in a limited space in a classroom of a middle and primary school is well prevented.
The earphone device further comprises an audio device, the control device 2 is electrically connected with the audio device, and the control device 2 receives sound collected by the microphone module 301 of the earphone device 3 and outputs the sound through a loudspeaker of the audio device.
The control device 2 further comprises a first audio power amplifier module and a display screen 201 module. The control device 2 further comprises a first power supply port and a voltage stabilizing module.
The earphone device 3 further comprises a second audio power amplifier module, a second power supply port, a charging protection module and a microphone interface.
The control device 2 comprises a shell 1, a mounting cavity 101 is formed in the shell 1, a mounting hole 102 is formed in the mounting cavity 101, the mounting hole 102 is smaller than the section of the mounting cavity 101, and an elastic clamping arm 103 matched with the mounting hole 102 is fixed in the mounting cavity 101. The shell 1 internal fixation has stopper 104, the stopper 104 with have interval 107 between the elasticity joint arm 103 control shell 1 internal fixation has circuit board 105, first bluetooth module, button module, first audio power amplifier module, first power supply mouth and voltage stabilizing module install in on the circuit board 105, offer the fretwork that is used for display screen 201, button module 202 to expose on the shell 1. The back of the circuit board 105 may form a stopper 104.
Through the technical scheme, the wall plug-in connector is convenient to install and fix, a plug-in connector can be installed on the wall body, the plug-in connector is inserted into the installation hole 102, and the elastic clamping arm 103 abuts against the plug-in connector, so that stable plug-in connection is realized.
The key module 202 includes a plurality of subject keys, a switch key, an acquisition key, a volume key, a match key and a disconnect key, and the earphone device 3 can be matched with the control device 2 through the match key when configured for the first time, and can disconnect communication through the disconnect key when disconnected. The earphone device 3 is a bone conduction earphone, and the key module 202 further includes a spare key.
The bottom of the shell 1 is also provided with a mounting lug 106, and the mounting lug 106 is provided with a perforation.
The earphone device comprises a Bluetooth audio and programmable processor, and is connected with a TYPE-C charging+microphone interface, a memory, a second audio power amplifier module and two earphones, and is provided with a charging protection chip.
A teaching audio control method, comprising the steps of:
the control device 2 and the earphone device 3 are arranged in each room, and the control device 2 is electrically connected with the audio equipment;
Pressing a switch key of a key module 202 in the control device to enable the control device 2 to be in a starting state;
pressing a matching key of the key module 202 in a power-on state of the control device 2 so that communication protocols between a first bluetooth module of the control device 2 and a second bluetooth module of the earphone device 3 in each room are matched with each other;
When the subject key of the key module 202 is pressed, the first bluetooth module of the control device 2 in the room and the second bluetooth module of the headphone device 3 are connected in wireless communication with each other, and the first bluetooth module of the control device 2 shields the headphone devices in the other rooms, and the codes of the matched headphone devices 3 are displayed in the control device 2. For example, the earphone device with the number 1 is matched, the number 1 is displayed on the display screen 201.
When the microphone module 301 of the earphone device 3 receives audio, the earphone device 3 transmits an audio signal to the audio apparatus through the first audio power amplification module of the control device 2 and plays sound.
The encryption method adopts a wireless communication protocol coding mode.
When put into use, for example, there are a plurality of multimedia classrooms, numbered A, B, C, D, e., each provided with an audio device, numbered A1, B1, C1, D1, e1, e.g., a computer with sound, the control device 2 of the present invention is mounted by a wall or a podium through the mounting hole 102, and each classroom is provided with a control device.
At the time of matching:
one of the control devices can be matched with a plurality of earphone devices, and one earphone device can also be matched with a plurality of control devices, and the earphone devices need to be matched before use.
The first step, pressing the matching key of the control device, and displaying 'matching' on the display screen of the control device;
The second step is that the teacher presses the start button of the earphone device for more than 5 seconds in the off state of the earphone, and can hear the prompting sound of the earphone device in Bluetooth matching;
The third step, after the matching is completed in about 3 seconds, the earphone prompting sound is heard to be connected, a number is displayed in the middle of the display screen (the number is also displayed on the new earphone tab, the number of each earphone is fixed),
The displayed number is the number of the key of the panel when the next time the control device is connected with the earphone device (for example, the number '1' is displayed, the key of the panel 'language 1' is pressed), and the connection is completed by pressing the number key on any matched control device. Other teachers who need to match the earphone arrangement do so in this way (numbers 2-8 are shown).
When the control devices in other classrooms are matched, the matching modes are the same, and the numbers displayed on the control devices by the same earphone are the same.
After the matching is completed, when a teacher needs to use the loudspeaker equipment in class;
firstly, after the earphone device is started, a memory connecting rod headset is inserted, a corresponding digital key is pressed on the control device when the earphone device is matched, and a prompt tone is heard as connected on the earphone device in about 3 seconds, so that the earphone device can speak and amplify;
And the second step is that after the use is finished, a 'disconnection' key on the control device is pressed, a teacher can hear the 'disconnection' of the earphone prompt tone, or after the earphone is closed, the 'disconnection' is displayed on the display screen.
When the teacher uses the loudspeaker device in class, the bone conduction earphone is inserted with the memory connecting rod headset, and the microphone module faces to the mouth, so that the loudspeaker effect is optimized. The volume of the sound can be adjusted only by pressing the up-down button of the volume on the control device (the volume button of the earphone cannot be adjusted after the connecting rod headset is used).
The control device of the invention uses an external power supply and can be in a startup state for a long time.
The first bluetooth module may employ a BTM525 chip. The second bluetooth module may employ QCC3034_ VFBGA _90 bar.
The earphone device 3 may be connected to the control device 2 and also to the teacher's own mobile phone. The bone conduction earphone can be connected with the control device and the mobile phone Bluetooth of the teacher, so that the teacher can answer the call and the euphoria music, and the bone conduction earphone is not required to be connected with the microphone module through the memory connecting rod.
It should be noted that if the phone is connected with the teacher's own mobile phone, a ring or a prompt tone is provided on the earphone when a call comes in, the call can be answered by pressing the call button on the earphone, at this time, the connection between the earphone device and the control device is cut off, and if the function is not needed, the Bluetooth function of the mobile phone is only closed.
Compared with the prior art, the voice amplifying device has the advantages that the voice amplifying device is simple in structure, long in lecture time of teachers each day, high in speaking volume, high in injury to the voice, and capable of reducing the burden of the voice of the teachers by utilizing the control device 2 and the earphone device 3 to carry out high-reduction-degree voice amplifying on the voice of the teachers by matching with the existing audio equipment, wherein many teachers also have sphagitis and even some people suffer from occupational diseases.
The earphone device 3 adopts the bone conduction earphone, the earphone is worn on two ears, the positions of the earphone are fixed, the two ears are released, the hands can be completely released during the course of a school, and the operation of the hands of a teacher is convenient for experiments and the like.
Because of the breakthrough of the earphone in low power consumption, the duration of the earphone lectures is more than twelve hours, the problem of the duration of the earphone is effectively solved, and the audio-visual education device is directly connected with a power supply. In the aspect of volume control, the audio-visual educational device and the bone conduction earphone are provided with 15-gear volume adjustable, so that teachers with different voices can achieve the best effect in the public address of a classroom. In addition, the total weight of the bone conduction earphone and the connecting rod headset is only about thirty grams, and the weight of the bone conduction earphone and the connecting rod headset is not different from that of a pair of glasses, so that the bone conduction earphone and the connecting rod headset are comfortable to wear.
For example, in universities, students have a large number of bluetooth connection devices such as mobile terminals, and some students also attempt to perform bluetooth matching with audio-visual educational devices, which can disturb the original matching sequence of the devices. The invention has address locking capability, the audio-visual educational device, namely the control device 2 of the invention can only be matched with a special bone conduction earphone, the communication safety can be ensured by adopting the directional encryption, and the malicious entry of other equipment is prevented by the directional encryption effect, and the software installation is needed to be carried out in advance when the audio-visual educational device and the bone conduction earphone are manufactured.
The bone conduction earphone can be selected from glasses type bone conduction earphone, and has the advantages of fashion and beautiful appearance although the bone conduction earphone has the defects of shorter duration and poorer sound amplifying effect.
The control device 2 can adjust the volume according to different use occasions, so that teachers with different voices can obtain the best effect in the public address of classrooms, and the effect of low power consumption is achieved. The earphone device 3 can give lessons with duration of more than twelve hours, so that the problem of duration of earphone use is effectively solved, and the control device 2 can be directly connected with a power supply.
In the use scene, the room is a classroom, and can be applied to occasions such as various schools, junior middle schools, high schools, universities, evening school and the like.
In addition, the invention can also be used in other scenes, such as a conference holding scene, a school class opening scene, or a language game, such as a dialect game, etc., wherein in the scenes, the conference rooms are provided with control devices, each person needing to speak can wear earphone devices, the control devices are connected with audio equipment in the room, the control devices can be controlled by a host or a background field control of the conference, the speaker can speak in a sitting, standing or walking way, the sound amplifying effect is not influenced, and the matching mode of a plurality of earphone devices and the control devices is consistent with the matching mode in the classroom scene.
Thus far, the technical solution of the present invention has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will fall within the scope of the present invention.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411475258.7A CN119277295A (en) | 2024-10-22 | 2024-10-22 | A digital audio control system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411475258.7A CN119277295A (en) | 2024-10-22 | 2024-10-22 | A digital audio control system and method |
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| Publication Number | Publication Date |
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| CN119277295A true CN119277295A (en) | 2025-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202411475258.7A Pending CN119277295A (en) | 2024-10-22 | 2024-10-22 | A digital audio control system and method |
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