CN210899540U - Full-function audio automatic processing system for teaching - Google Patents

Abstract

The utility model discloses a full function audio frequency automatic processing system of imparting knowledge to students, including the host computer, the host computer includes the shell body, and the terminal surface has the mounting panel through bolt fixed mounting before the shell body, and four support columns are installed to the shell body bottom, and control circuit board is installed to shell body inner chamber, are equipped with volume knob and switch on the mounting panel, and the radiating groove has all been opened to shell body up end and lower terminal surface, and the dust screen is installed to the radiating groove inboard, and shell body rear end face is equipped with a plurality of interfaces, the utility model discloses simple structure, heat dispersion is good, can realize completely that the room is all-round in 80 square meters, and the no. Meanwhile, the device has full-band full-duplex echo cancellation: the classroom video conference system can realize the simultaneous interaction of a plurality of classrooms, has clear sound and no falling characters, is widely suitable for the industries of education, conferences and public inspection, and is seamlessly connected with equipment such as high-definition recorded broadcasting, voice monitoring, digital court trial, remote video conference terminals and the like in the current market.

Description

Full-function audio automatic processing system for teaching

Technical Field

The utility model relates to an audio processing device technical field specifically is a teaching full function audio frequency automatic processing system.

Background

The interactive recording and broadcasting system is positioned in a competitive recording and broadcasting classroom with a high budget, a normalized classroom lacks or even does not have a budget for acoustic decoration, and the inherent sound field environment determines that the classroom sound is fuzzy.

The audio system still uses the backward simplex echo suppression technology to realize echo cancellation, and as echo suppression is a nonlinear echo control method, once multi-party interaction causes the pause of loudspeaker playback, the echo can not be completely cancelled, and the interference of the echo can not be got rid of during interactive teaching, so teachers can not give lessons with great concentration, and the teaching quality is reduced.

Through actual tests: a person needs to hear a sound accurately 8-10 dB higher than the background noise, while the ambient noise in a conventional classroom is about 60dB, which is mainly due to: traffic noise, industrial noise, building construction noise, social life noise, classroom electrical equipment noise, and the like. The sound pressure of the loud continuous speech of people is 75dB, the sound pressure of a teacher needs to reach 88dB in class, each student in the whole class can be guaranteed to clearly hear each sentence of the teacher, and the numerical value is far greater than the sound pressure value of the long-time continuous loud speech of people of 75dB, so that 70% of the teachers in China suffer from throat and vocal cord diseases to different degrees; system to system compatibility is extremely low: the traditional method is to divide audio acquisition, processing and sound amplification into two independent systems which are not connected with each other. Once recording, interaction and sound amplification are needed, the problems of unclear, large and small sound and echo of courseware and far-end sound recording cannot be solved. The main reason is that the sound box amplifies the sound and superposes the room reverberation collected by the recording microphone and the sound amplifying microphone.

The existing classroom has too many devices, so that the use difficulty is greatly increased, great troubles are brought to common teachers, the normal operation of the system is difficult to ensure without field guidance of professionals, but most schools are often lack of the configuration of the professionals at present; the complexity of the system, the diversity of the equipment and the probability of system failure are also higher, the whole system can not be normally used due to the failure of certain equipment, maintenance is often done frequently, a large amount of manpower and financial resources of schools are wasted in maintenance, and the system can not be paid back; in addition, the mounting of too many gun-shaped suspended malls on the ceiling is too cumbersome and causes stress when teachers and students see the insides, from the viewpoint of classroom beauty.

In the face of the series of malignant problems, the artificial foot stone becomes a large stumbling stone for educational information construction. Therefore, an interactive sound-amplifying recording and broadcasting audio system which has very strong comprehensiveness and can solve all the audio problems is urgently needed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a teaching full function audio frequency automatic processing system to solve the problem of proposing among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a teaching full function audio frequency automatic processing system, includes the host computer, the host computer includes the shell body, the terminal surface has the mounting panel through bolt fixed mounting before the shell body, four support columns are installed to the shell body bottom, control circuit board is installed to the shell body inner chamber, be equipped with volume knob and switch on the mounting panel, the radiating groove has all been opened to shell body up end and lower terminal surface, the dust screen is installed to the radiating groove inboard, the shell body rear end face is equipped with a plurality of interfaces.

Preferably, the plurality of interfaces includes a power interface, a digital signal interface, a volume up key, a volume down key, a speaker volume adjust key, a LINE IN interface, a MIC IN interface, a VCS YIN interface, a VCS OUT interface, a PA OUT interface, and a MONITOR interface.

Preferably, 2 100W/8 ohm digital power amplifiers are further installed inside the outer shell.

Preferably, the dust screen includes net frame, first filter screen and second filter screen fixed mounting are in the net frame, first filter screen mesh aperture is greater than second filter screen mesh aperture.

Preferably, the outer shell is made of aluminum materials, the outer shell is of a cuboid structure, the length of the outer shell is 30-40cm, the width of the outer shell is 20-25 cm, and the height of the outer shell is 4-5 cm.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses simple structure, heat dispersion is good, can realize completely that the room is all-round in the 80 square meters, and the total area does not have blind spot high definition pronunciation collection. Meanwhile, the device has full-band full-duplex echo cancellation: the classroom video conference system can realize the simultaneous interaction of a plurality of classrooms, has clear sound and no falling characters, is widely suitable for the industries of education, conferences and public inspection, and is seamlessly connected with equipment such as high-definition recorded broadcasting, voice monitoring, digital court trial, remote video conference terminals and the like in the current market.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a rear view of the present invention;

fig. 3 is a schematic view of the dust screen structure of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a full-function audio automatic processing system for teaching comprises a host, wherein the host comprises an outer shell 1, the outer shell 1 is made of aluminum materials, the outer shell 1 is of a cuboid structure, the length of the outer shell 1 is 30-40cm, the width of the outer shell is 20-25 cm, and the height of the outer shell is 4-5 cm; the utility model discloses a dustproof wireless remote control device, including shell body 1, terminal surface has mounting panel 2 before the shell body 1 through bolt fixed mounting, four support columns 3 are installed to shell body 1 bottom, control circuit board 4 is installed to 1 inner chamber of shell body, be equipped with volume knob 5 and switch 6 on the mounting panel 2, radiating groove 7 has all been opened to 1 up end of shell body and lower terminal surface, dust screen 8 is installed to 7 inboards of radiating groove, 1 rear end face of shell body is equipped with a plurality of interfaces.

The plurality of interfaces include a power interface 9, a digital signal interface 10, an up volume key 11, a down volume key 12, a speaker volume adjust key 13, a LINE IN interface 14, a MIC IN interface 15, a VCS YIN interface 16, a VCS OUT interface 17, a PA OUT interface 18, and a MONITOR interface 19.

The utility model discloses in, 2 100W 8 ohm digital power amplifiers are still installed to shell body 1 inside. The normal teaching sound amplification is satisfied, 2 DW380 recording microphones are used in a matched mode, all-around rooms in 80 square meters can be completely realized, and blind-spot-free high-definition voice collection in the whole area is achieved.

The utility model also has a built-in microphone high-definition remote dynamic sampling analysis circuit, and the microphone high-definition pickup radius can reach 6 meters; 2 groups of wireless microphone receiving modules are arranged in the mobile phone, and are matched with wireless handheld and head-mounted microphones; in the remote teaching interaction, the full-band full-duplex echo cancellation function under the large reverberation environment below 1.8S can be realized by using AEC self-adaptive full-automatic echo cancellation; and the noise reduction amplitude of the DB is 15, so that the environmental noise is reduced to the maximum extent, and the signal to noise ratio is greatly improved. No matter the distance recording, the voice is clean, and the identifiability, the definition and the reduction degree are high; the utility model utilizes AGC microphone level automatic gain control, no matter how far or near the speaker and the microphone are, the sound is different in size, and the phenomenon of small and large sound is not generated during final recording or sound amplification; the utility model also has an intelligent sound amplification level detection function, when the power amplifier output is gradually increased, the level of the recording microphone is automatically reduced to ensure the high definition of courseware; the power amplifier stops outputting within 300MS, the recording microphone is automatically started, and no language details are leaked; the utility model discloses an AFC audio processing function, the system transaudient gain reaches more than 15 dB. The noise of a classroom is generally 60-70dB, a teacher uses normal class volume to give a lecture, the sound amplification of a sound box is over 86dB, and the requirement of 100 square meters of teaching sound amplification is completely met. The sound box can be added to realize uniform sound amplification in larger classrooms; furthermore, the utility model discloses support to expand to record in step, mr can both clearly be expanded out at the arbitrary corner microphone of podium and do not have to whistle. If courseware needs to be recorded, the device provides a special recording interface, 18dB noise reduction processing is arranged in the device, environmental noise (air conditioners, fans, wind sounds and the like) can be filtered, and teaching contents of teachers can be recorded clearly in real time.

Additionally, the utility model discloses in, dust screen 8 is including net frame 20, first filter screen 21 and second filter screen 22 fixed mounting are in net frame 20, first filter screen 21 mesh aperture is greater than second filter screen 22 mesh aperture. The dust screen that sets up can prevent effectively that outside dust from getting into inside the host computer.

To sum up, the utility model discloses simple structure, heat dispersion is good, can realize completely that the room is all-round in the 80 square meters, and the total area does not have blind spot high definition pronunciation collection. Meanwhile, the device has full-band full-duplex echo cancellation: the classroom video conference system can realize the simultaneous interaction of a plurality of classrooms, has clear sound and no falling characters, is widely suitable for the industries of education, conferences and public inspection, and is seamlessly connected with equipment such as high-definition recorded broadcasting, voice monitoring, digital court trial, remote video conference terminals and the like in the current market.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. The utility model provides a teaching full function audio frequency automatic processing system, includes the host computer, its characterized in that: the host computer includes shell body (1), the terminal surface has mounting panel (2) through bolt fixed mounting before shell body (1), four support columns (3) are installed to shell body (1) bottom, control circuit board (4) are installed to shell body (1) inner chamber, be equipped with volume knob (5) and switch (6) on mounting panel (2), shell body (1) up end has all opened radiating groove (7) with lower terminal surface, dust screen (8) are installed to radiating groove (7) inboard, shell body (1) rear end face is equipped with a plurality of interfaces.

2. The automatic processing system for full-functional audio for teaching of claim 1, wherein: the plurality of interfaces include a power interface (9), a digital signal interface (10), an up volume key (11), a down volume key (12), a speaker volume adjustment key (13), a LINE IN interface (14), a MIC IN interface (15), a VCS YIN interface (16), a VCS OUT interface (17), a PA OUT interface (18), and a MONITOR interface (19).

3. The automatic processing system for full-functional audio for teaching of claim 1, wherein: 2 100W/8 ohm digital power amplifiers are further mounted inside the outer shell (1).

4. The automatic processing system for full-functional audio for teaching of claim 1, wherein: the dust screen (8) comprises a screen frame (20), a first filter screen (21) and a second filter screen (22), the first filter screen (21) and the second filter screen (22) are fixedly installed in the screen frame (20), and the mesh aperture of the first filter screen (21) is larger than that of the second filter screen (22).

5. The automatic processing system for full-functional audio for teaching of claim 1, wherein: the outer shell (1) is made of aluminum materials, the outer shell (1) is of a cuboid structure, the length of the outer shell (1) is 30-40cm, the width of the outer shell is 20-25 cm, and the height of the outer shell is 4-5 cm.

Images