CN112601203B - Classroom sound interaction system - Google Patents

Classroom sound interaction system Download PDF

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Publication number
CN112601203B
CN112601203B CN202011414989.2A CN202011414989A CN112601203B CN 112601203 B CN112601203 B CN 112601203B CN 202011414989 A CN202011414989 A CN 202011414989A CN 112601203 B CN112601203 B CN 112601203B
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module
bluetooth
relay host
sound
bluetooth headset
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CN112601203A (en
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刘天仪
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
    • G—PHYSICS
    • G07—CHECKING-DEVICES
    • G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
    • G07C1/00—Registering, indicating or recording the time of events or elapsed time, e.g. time-recorders for work people
    • G07C1/10—Registering, indicating or recording the time of events or elapsed time, e.g. time-recorders for work people together with the recording, indicating or registering of other data, e.g. of signs of identity
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L17/00—Speaker identification or verification
    • G10L17/22—Interactive procedures; Man-machine interfaces
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
    • G10L17/00—Speaker identification or verification
    • G10L17/22—Interactive procedures; Man-machine interfaces
    • G10L17/24—Interactive procedures; Man-machine interfaces the user being prompted to utter a password or a predefined phrase
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1091—Details not provided for in groups H04R1/1008 - H04R1/1083
    • 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
    • H04R3/04—Circuits for transducers, loudspeakers or microphones for correcting frequency response
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/06—Authentication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup

Abstract

The invention relates to a classroom sound interaction system. The characteristics of the Bluetooth headset are combined to establish a classroom interaction system, and the problems that the classroom is limited by the size of space, the sound transmission is limited and the noise is caused by adopting a common loudspeaker in the prior art are solved; the sound that collects the microphone is sent to bluetooth headset after making an uproar again, has improved the definition of sound greatly. A new sign-in system is established, the sign-in is quick, and the possibility of signing is avoided by using a mode of combining the hall character password, the earphone identity identification and the voiceprint identification.

Description

Classroom sound interaction system
Technical Field
The invention relates to a teaching device, in particular to a classroom sound interaction system.
Background
The interactive teaching system integrates video, audio and data communication, supports rich multimedia teaching and courseware making management, can realize various teaching modes such as interaction, live broadcast, on-demand and the like, and is a set of interactive network learning platform system specially oriented to learning management and knowledge management released by education supervisors, schools, training institutions and enterprises.
The existing interactive system generally focuses on the interaction of audio and video, generally adopts a traditional loudspeaker for the propagation of sound, and when a plurality of classes teach simultaneously, because the sound of the loudspeaker is very big, and the pertinence is not good, the phenomenon that other classrooms receive interference is easily caused.
In addition, most of the current classrooms need to sign in, the traditional paper sign-in efficiency is very low, and the electronic card printing type sign-in mode has poor effect on identity identification, so that the possibility of signing for others or cheating is very easy to occur.
Disclosure of Invention
Aiming at the content, in order to solve the problems, the classroom sound interaction system is provided, and comprises a relay host, a computer, a mobile phone, a microphone and a Bluetooth headset; the relay host can be wirelessly connected with a plurality of Bluetooth earphones, and each Bluetooth earphone has unique identity identification information; the computer or the mobile phone can be in wireless connection with the relay host, and the computer or the mobile phone can acquire the number and the identification information of the Bluetooth earphones which are connected with the relay host from the relay host;
the microphone is in wireless connection with the relay host, sound signals recorded by the microphone can be forwarded to the Bluetooth headset by the relay host in real time, the Bluetooth headset has a radio receiving function, and the sound signals collected by the Bluetooth headset can be sent to the relay host for character recognition and voice print recognition.
The relay host comprises a main controller, a power supply module, a WIFI module, a multi-device Bluetooth module, a storage module and a voice recognition module; the main controller is connected with the WIFI module, the multi-device Bluetooth module, the storage module and the voice recognition module; the power supply module supplies power to the WIFI module, the main controller and the multi-device Bluetooth module; the multi-device Bluetooth module is used for connecting a microphone and a plurality of Bluetooth earphones; the WIFI module is used for connecting a computer or a mobile phone;
the master controller sends the sound signals acquired from the microphone to the Bluetooth headset after noise reduction processing;
the storage module is used for storing the paradise character password, the voiceprint characteristic data and the identity identification information and the user ID information of the Bluetooth earphones;
the voice recognition module can acquire the voice signal uploaded by the Bluetooth headset through the main controller, perform character recognition and voiceprint recognition on the voice signal, and send the results of the character recognition and the voiceprint recognition to the main controller.
The Bluetooth earphone comprises a power supply module, an earphone controller, a distance detection module, an earphone Bluetooth module, an identity recognition module, a power amplification module, a radio module and a sound production unit;
the earphone controller is connected with the distance detection module, the earphone Bluetooth module, the identity recognition module, the power amplifier module and the radio module; the power supply module supplies power to the earphone controller, the earphone Bluetooth module and the power amplification module;
the earphone Bluetooth module is used for connecting the relay host and acquiring a sound signal from the relay host; the identity identification module stores identity identification information, and after the earphone Bluetooth module is connected with the relay host, the relay host acquires the identity identification information from the identity identification module for individual identification of the Bluetooth earphone;
the distance detection module is arranged outside the sound production unit of the Bluetooth headset and used for detecting the distance between the sound production unit and a person, the Bluetooth headset can continuously work only when the distance detected by the distance detection module is smaller than a threshold value, otherwise, the Bluetooth headset is automatically closed after continuously working for 5 min;
the power amplification module is connected with the sounding unit and is used for amplifying the sound signal sent by the relay host and sounding through the sounding unit;
the radio module is used for collecting sound near the Bluetooth headset, converting the sound into a digital signal and then sending the digital signal to the relay host.
The main controller performs noise reduction processing on the sound signals acquired from the microphones as follows:
the microphone collects a first sound signal, converts the first sound signal into a first digital sound signal, and then sends the first digital sound signal to a main controller of the relay host; the sound receiving units of the Bluetooth earphones collect a plurality of second sound signals, convert the second sound signals into second digital sound signals, and then send the second digital sound signals to a main controller of the relay host, and the main controller performs signal superposition on the second digital sound signals and performs volume standardization to obtain standardized second digital sound signals; the main controller carries out fast Fourier transform on the first digital sound signal and the standardized second digital sound signal, and the first digital sound signal and the standardized second digital sound signal are converted into a first frequency domain signal and a second frequency domain signal of a frequency domain; the main controller differentiates the first frequency domain signal and the second frequency domain signal, and deducts the second frequency domain signal in the first frequency domain signal; and then carrying out inverse fast Fourier transform on the differential frequency domain signal after the difference to obtain a differential digital sound signal, thereby realizing the noise reduction processing.
The classroom interaction system also has a sign-in function, and the specific working mode of the sign-in function is as follows:
sending a sign-in starting signal to the relay host through a computer or a mobile phone, and enabling the relay host to enter a sign-in mode;
inputting a hall character password to a relay host through a computer or a mobile phone, wherein the hall character password is a character password input by a user according to the preference of the user; the relay host puts the associated character password into a storage module for storage;
the Bluetooth connection is established between the Bluetooth earphone and the relay host, and the relay host acquires identity identification information from the Bluetooth earphone;
the voice recognition module acquires a voice signal uploaded by a certain Bluetooth headset from the main controller, performs character recognition and voiceprint recognition on the voice signal, and sends the results of the character recognition and the voiceprint recognition and the identity recognition information of the Bluetooth headset to the main controller; the main controller compares the character information identified by the voice identification module with the hall character password in the storage module and checks whether the character information is matched with the hall character password;
if the voice print information is matched with the user ID information, the master controller compares the voiceprint recognition result of the voice recognition module with voiceprint feature data stored in the storage module to obtain the user ID information corresponding to the voiceprint information; then the master control matches the identity identification information of the Bluetooth headset with the user ID information in the memory to obtain second ID information of the user; and comparing whether the first ID information and the second ID information correspond to the same user or not by the main control machine, and if so, sending the user information to the computer or the mobile phone to complete the sign-in.
And after the computer or the mobile phone sends the sign-in stop signal to the relay host, the relay host exits the sign-in mode.
The Bluetooth headset is provided with a plurality of indicating lamps, and after the Bluetooth headset is connected with the relay headset, the first indicating lamp displays green; when the Bluetooth headset finishes the sign-in and is qualified, the relay host sends a sign-in completion signal to the Bluetooth headset, and a second indicator lamp of the Bluetooth headset displays green;
the Bluetooth headset is also provided with a switch for controlling a power switch of the Bluetooth headset.
The beneficial effects of the invention are as follows:
the invention combines the characteristics of the Bluetooth headset to establish a classroom interaction system, establishes connection through the relay host of the Bluetooth headset, and overcomes the problems that the classroom is limited by the size of space, the sound transmission is limited and the noise is caused by adopting a common loudspeaker in the prior art; in addition, the device is in wireless connection, can be freely placed and can be randomly stored after being used.
The invention combines the functions of the Bluetooth headset, reduces the noise of the sound collected by the microphone and then sends the sound to the Bluetooth headset, thereby greatly improving the definition of the sound, collecting the noise through the Bluetooth headset, overlapping the collected noise, avoiding the difference of single noise sources and having better noise reduction effect.
The invention also establishes a new sign-in system, the sign-in is quick, the sign-in can be completed only after the results of the hall character password, the earphone identity and the voice print recognition are matched by using the mode of the set of the hall character password, the earphone identity and the voice print recognition, the randomness of the hall character password is strong, the possibility of cracking or cheating is almost impossible, and the possibility of signing instead is avoided.
Drawings
The accompanying drawings, which are included to provide further understanding of the disclosed subject matter, are incorporated in and constitute a part of this specification. The drawings illustrate the implementations of the disclosed subject matter and, together with the detailed description, serve to explain the principles of implementations of the disclosed subject matter. No attempt is made to show structural details of the disclosed subject matter in more detail than is necessary for a fundamental understanding of the disclosed subject matter and various modes of practicing the same.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a functional block diagram of a relay host according to the present invention;
FIG. 3 is a functional block diagram of a Bluetooth headset of the present invention;
fig. 4 is an external view of the bluetooth headset of the present invention.
Detailed Description
The advantages, features and methods of accomplishing the same will become apparent from the drawings and the detailed description that follows.
Example 1:
with reference to fig. 1-4, a classroom voice interaction system includes a relay host 1, a computer 2, a mobile phone 3, a microphone 4, and a bluetooth headset 5; the relay host 1 can be wirelessly connected with a plurality of Bluetooth earphones 5, and each Bluetooth earphone 5 has unique identity identification information; the computer 2 and the mobile phone 3 can be in wireless connection with the relay host 1, and the computer 2 or the mobile phone 3 can acquire the number and the identification information of the Bluetooth earphones 5 which are connected with the relay host 1 from the relay host 1;
the microphone 4 is in wireless connection with the relay host 1, sound signals recorded by the microphone 4 can be forwarded to the Bluetooth headset 5 by the relay host 1 in real time, the Bluetooth headset 5 has a radio receiving function, and the sound signals collected by the Bluetooth headset 5 can be sent to the relay host 1 for character recognition and voiceprint recognition.
The relay host 1 comprises a main controller, a power supply module, a WIFI module, a multi-device Bluetooth module, a storage module and a voice recognition module; the main controller is connected with the WIFI module, the multi-device Bluetooth module, the storage module and the voice recognition module; the power supply module supplies power to the WIFI module, the main controller and the multi-device Bluetooth module; the multi-device Bluetooth module is used for connecting a microphone 4 and a plurality of Bluetooth earphones 5; the WIFI module is used for connecting a computer 2 or a mobile phone 3;
the master controller sends the sound signals acquired from the microphone 4 to the Bluetooth headset 5 after noise reduction processing;
the storage module is used for storing the hall character password, the voiceprint characteristic data and the identity identification information and the user ID information of the Bluetooth headset 5;
the voice recognition module can acquire the voice signal uploaded by the Bluetooth headset 5 through the main controller, perform character recognition and voiceprint recognition on the voice signal, and send the results of the character recognition and the voiceprint recognition to the main controller.
The Bluetooth earphone 5 comprises a power supply module, an earphone controller, a distance detection module, an earphone Bluetooth module, an identity recognition module, a power amplification module, a radio module 54 and a sound production unit 53;
the earphone controller is connected with the distance detection module, the earphone Bluetooth module, the identity recognition module, the power amplification module and the radio module 54; the power supply module supplies power to the earphone controller, the earphone Bluetooth module and the power amplification module;
the earphone Bluetooth module is used for connecting the relay host 1 and acquiring a sound signal from the relay host 1; the identity identification module stores identity identification information, and after the earphone Bluetooth module is connected with the relay host 1, the relay host 1 acquires the identity identification information from the identity identification module for individual identification of the Bluetooth earphone 5;
the distance detection module is arranged outside the sounding unit 53 of the Bluetooth headset 5 and is used for detecting the distance from the sounding unit 53 to a person, the Bluetooth headset 5 can continuously work only when the distance detected by the distance detection module is smaller than a threshold value, otherwise, the Bluetooth headset 5 is automatically turned off after continuously working for 5 min;
the power amplifier module is connected with the sound production unit 53, and is used for amplifying the sound signal sent by the relay host 1 and producing sound through the sound production unit 53;
the radio module 54 is used for collecting the sound near the bluetooth headset 5, converting the sound into a digital signal and sending the digital signal to the relay host 1.
Example 2:
this embodiment describes a noise reduction process.
The process of the main controller subjecting the sound signal acquired from the microphone 4 to the noise reduction processing is as follows:
the microphone 4 collects the first sound signal, converts the first sound signal into a first digital sound signal, and then sends the first digital sound signal to the main controller of the relay host 1; the sound receiving units of the plurality of Bluetooth earphones 5 collect a plurality of second sound signals, convert the second sound signals into second digital sound signals, and then send the second digital sound signals to the main controller of the relay host 1, and the main controller superposes the plurality of second digital sound signals and standardizes the volume to obtain standardized second digital sound signals; the main controller carries out fast Fourier transform on the first digital sound signal and the standardized second digital sound signal, and the first digital sound signal and the standardized second digital sound signal are converted into a first frequency domain signal and a second frequency domain signal of a frequency domain; the main controller differentiates the first frequency domain signal and the second frequency domain signal, and deducts the second frequency domain signal in the first frequency domain signal; and then carrying out fast Fourier inverse transformation on the differential frequency domain signal after the difference to obtain a differential digital sound signal, thereby realizing noise reduction processing.
Example 3:
the embodiment introduces a check-in function, and the specific working mode of the check-in function is as follows:
sending a sign-in starting signal to the relay host 1 through the computer 2 or the mobile phone 3, and enabling the relay host 1 to enter a sign-in mode;
inputting a hall character password to the relay host 1 through the computer 2 or the mobile phone 3, wherein the hall character password is a character password input by a user according to the preference of the user; the relay host 1 puts the associated character password into a storage module for storage;
the Bluetooth headset 5 and the relay host 1 establish Bluetooth connection, and the relay host 1 acquires identity identification information from the Bluetooth headset 5;
the voice recognition module acquires a voice signal uploaded by a certain Bluetooth headset 5 from the main controller, performs character recognition and voiceprint recognition on the voice signal, and sends the results of the character recognition and the voiceprint recognition and the identity recognition information of the Bluetooth headset 5 to the main controller; the main controller compares the character information identified by the voice identification module with the hall character password in the storage module and checks whether the character information is matched with the hall character password;
if the voiceprint identification result is matched with the voiceprint characteristic data stored in the storage module, the master controller compares the voiceprint identification result of the voice identification module with the voiceprint characteristic data stored in the storage module to obtain first ID information of the user corresponding to the voiceprint information; then the master control matches the identification information of the Bluetooth earphone 5 with the user ID information in the memory to obtain second ID information of the user; and the main control machine compares whether the first ID information and the second ID information correspond to the same user, and if so, sends the user information to the computer 2 or the mobile phone 3 to complete the sign-in.
After the computer 2 or the mobile phone 3 sends the sign-in stop signal to the relay host 1, the relay host 1 exits the sign-in mode.
A plurality of indicator lamps are arranged on the Bluetooth headset 5, and when the Bluetooth headset 5 is connected with a relay headset, the first indicator lamp 51 displays green; when the Bluetooth headset 5 finishes the sign-in and is qualified, the relay host 1 sends a sign-in completion signal to the Bluetooth headset 5, and a second indicator lamp 52 of the Bluetooth headset 5 displays green;
the bluetooth headset 5 is further provided with a switch 55 for controlling a power switch of the bluetooth headset 5.
Example 4:
the Bluetooth headset can also be used as a common Bluetooth headset, when in use, the Bluetooth headset can be connected with a mobile phone or other mobile terminals with Bluetooth functions, and the mobile phone or other mobile terminals send digital sound signals to the Bluetooth headset and play the digital sound signals through the Bluetooth headset; the sound receiving module of the Bluetooth headset collects sound and sends the sound to a mobile phone or other mobile terminals, so that the Bluetooth microphone function is realized.
Therefore, the Bluetooth headset not only can be used on class, but also can be used at ordinary times, the utilization rate is greatly improved, and the resource waste is avoided.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims (2)

1. A classroom sound interaction system comprises a relay host (1), a computer (2), a mobile phone (3), a microphone (4) and a Bluetooth headset (5); the system is characterized in that the relay host (1) can be in wireless connection with a plurality of Bluetooth earphones (5), and each Bluetooth earphone (5) has unique identity identification information; the computer (2) and the mobile phone (3) can be in wireless connection with the relay host (1), and the computer (2) or the mobile phone (3) can acquire the number and the identification information of the Bluetooth earphones (5) which are connected with the relay host (1) from the relay host (1);
the microphone (4) is in wireless connection with the relay host (1), sound signals recorded by the microphone (4) can be forwarded to the Bluetooth headset (5) by the relay host (1) in real time, the Bluetooth headset (5) has a sound receiving function, and the sound signals collected by the Bluetooth headset (5) can be sent to the relay host (1) for character recognition and sound pattern recognition;
the relay host (1) comprises a main controller, a power supply module, a WIFI module, a multi-device Bluetooth module, a storage module and a voice recognition module; the main controller is connected with the WIFI module, the multi-device Bluetooth module, the storage module and the voice recognition module; the power supply module supplies power to the WIFI module, the main controller and the multi-device Bluetooth module; the multi-device Bluetooth module is used for connecting a microphone (4) and a plurality of Bluetooth earphones (5); the WIFI module is used for connecting a computer (2) or a mobile phone (3);
the main controller sends the sound signals acquired from the microphone (4) to the Bluetooth headset (5) after noise reduction processing;
the storage module is used for storing the character code of the hall, a plurality of voice print characteristic data and the identity identification information and the user ID information of a plurality of Bluetooth earphones (5);
the voice recognition module is used for acquiring a voice signal uploaded by the Bluetooth headset (5) from the main controller, performing character recognition and voiceprint recognition on the voice signal, and sending results of the character recognition and the voiceprint recognition to the main controller;
the Bluetooth earphone (5) comprises a power supply module, an earphone controller, a distance detection module, an earphone Bluetooth module, an identity recognition module, a power amplification module, a radio module (54) and a sound production unit (53);
the earphone controller is connected with the distance detection module, the earphone Bluetooth module, the identity recognition module, the power amplification module and the radio module (54); the power supply module supplies power to the earphone controller, the earphone Bluetooth module and the power amplifier module;
the earphone Bluetooth module is used for connecting the relay host (1) and acquiring a sound signal from the relay host (1); the identity identification module stores identity identification information, and after the earphone Bluetooth module is connected with the relay host (1), the relay host (1) acquires the identity identification information from the identity identification module for individual identification of the Bluetooth earphone (5);
the distance detection module is arranged outside a sounding unit (53) of the Bluetooth headset (5) and is used for detecting the distance between the sounding unit (53) and a person, the Bluetooth headset (5) can continuously work only when the distance detected by the distance detection module is smaller than a threshold value, otherwise, the Bluetooth headset (5) is automatically closed after continuously working for 5 min;
the power amplifier module is connected with the sound production unit (53), and is used for amplifying the sound signal sent by the relay host (1) and producing sound through the sound production unit (53);
the radio module (54) is used for collecting the sound near the Bluetooth headset (5), converting the sound into a digital signal and then sending the digital signal to the relay host (1);
the main controller carries out noise reduction processing on the sound signals acquired from the microphone (4) as follows:
the microphone (4) collects a first sound signal, converts the first sound signal into a first digital sound signal, and then sends the first digital sound signal to the main controller of the relay host (1); the sound receiving modules of the Bluetooth earphones (5) collect a plurality of second sound signals, convert the second sound signals into second digital sound signals, and then send the second digital sound signals to the main controller of the relay host (1), and the main controller superposes the second digital sound signals and standardizes the volume to obtain standardized second digital sound signals; the main controller carries out fast Fourier transform on the first digital sound signal and the standardized second digital sound signal, and the first digital sound signal and the standardized second digital sound signal are converted into a first frequency domain signal and a second frequency domain signal of a frequency domain; the main controller differentiates the first frequency domain signal and the second frequency domain signal, and deducts the second frequency domain signal in the first frequency domain signal; then, performing fast Fourier inverse transformation on the differential frequency domain signal after the difference to obtain a differential digital sound signal, thereby realizing noise reduction processing;
the classroom interaction system also has a check-in function, and the specific working mode of the check-in function is as follows:
sending a sign-in starting signal to the relay host (1) through the computer (2) or the mobile phone (3), and enabling the relay host (1) to enter a sign-in mode;
inputting a hall character password into the relay host (1) through the computer (2) or the mobile phone (3), wherein the hall character password is a character password input by a user according to the preference of the user; the relay host (1) puts the paradise character password into a storage module for storage;
the Bluetooth connection is established between the Bluetooth earphone (5) and the relay host (1), and the relay host (1) acquires identity identification information from the Bluetooth earphone (5);
the voice recognition module acquires a voice signal uploaded by a certain Bluetooth headset (5) from the main controller, performs character recognition and voiceprint recognition on the voice signal, and sends the results of the character recognition and the voiceprint recognition and the identity recognition information of the Bluetooth headset (5) to the main controller; the main controller compares the character information identified by the voice identification module with the hall character password in the storage module and checks whether the character information is matched with the hall character password;
if the voice print information is matched with the user ID information, the master controller compares the voiceprint recognition result of the voice recognition module with voiceprint feature data stored in the storage module to obtain the user ID information corresponding to the voiceprint information; then the main controller matches the identity identification information of the Bluetooth headset (5) with the user ID information in the storage module to obtain second ID information of the user; the main controller compares whether the first ID information and the second ID information correspond to the same user, and if so, the information of the user is sent to the computer (2) or the mobile phone (3) to complete the sign-in;
and after the computer (2) or the mobile phone (3) sends the sign-in stop signal to the relay host (1), the relay host (1) exits the sign-in mode.
2. A classroom sound interaction system according to claim 1, wherein:
a plurality of indicator lamps are arranged on the Bluetooth headset (5), and when the Bluetooth headset (5) is connected with the relay host, the first indicator lamp (51) displays green; when the Bluetooth headset (5) finishes the sign-in and is qualified, the relay host (1) sends a sign-in completion signal to the Bluetooth headset (5), and a second indicator lamp (52) of the Bluetooth headset (5) displays green;
the Bluetooth headset (5) is also provided with a switch (55) for controlling a power switch of the Bluetooth headset (5).
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109729067A (en) * 2018-08-17 2019-05-07 深圳壹账通智能科技有限公司 Voice punch card method, device, equipment and computer storage medium
CN209056091U (en) * 2018-07-23 2019-07-02 广州安龙科技有限公司 Informalized teaching control system
CN211702356U (en) * 2020-04-30 2020-10-16 深圳市韶音科技有限公司 Bone conduction earphone
CN211880588U (en) * 2020-04-30 2020-11-06 深圳市韶音科技有限公司 Earphone communication system
CN211880592U (en) * 2020-04-30 2020-11-06 深圳市韶音科技有限公司 Earphone communication system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10631108B2 (en) * 2016-02-08 2020-04-21 K/S Himpp Hearing augmentation systems and methods

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN209056091U (en) * 2018-07-23 2019-07-02 广州安龙科技有限公司 Informalized teaching control system
CN109729067A (en) * 2018-08-17 2019-05-07 深圳壹账通智能科技有限公司 Voice punch card method, device, equipment and computer storage medium
CN211702356U (en) * 2020-04-30 2020-10-16 深圳市韶音科技有限公司 Bone conduction earphone
CN211880588U (en) * 2020-04-30 2020-11-06 深圳市韶音科技有限公司 Earphone communication system
CN211880592U (en) * 2020-04-30 2020-11-06 深圳市韶音科技有限公司 Earphone communication system

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