Conference sound amplification system

Abstract

The utility model discloses a conference sound amplification system, which comprises an audio processing module, a conference host and a microphone module, wherein the microphone module comprises a plurality of microphones which are connected in series; the audio processing module is in communication connection with the conference host; the conference host is connected with one microphone in the microphone module; each microphone comprises a pickup module, a processor, a power amplification module and a loudspeaker module which are connected in sequence; the loudspeaker module comprises a first loudspeaker and a second loudspeaker; the first loudspeaker and the second loudspeaker are arranged on the left side and the right side of the microphone in the horizontal direction in opposite directions; the sound pickup module is installed above the microphone, and the direction of the sound pickup module is perpendicular to the connecting line between the first loudspeaker and the second loudspeaker, so that the problems that in the prior art, the sound amplification effect of a sound amplification system in a conference room is not uniform, and the sound amplification system is prone to squeal are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of sound reinforcement systems, in particular to a conference sound reinforcement system. Background Art

[0002] The speakers of the existing small conference room sound reinforcement system are located somewhere on the top of the conference room. The direction of sound reinforcement and the direction of microphone pickup will intersect. In addition, the sound reinforcement effect of a single speaker is very large at a close distance. The microphone close to the speaker can easily pick up the sound amplified by the speaker for a second time, thus causing the system to howl.

[0003] A small conference room only needs to install one or two speakers to meet the sound reinforcement needs. However, due to the small number of speakers, there is a large difference in sound volume between those close to the speakers and those far away, resulting in uneven sound reinforcement effect. If the volume is adjusted too high, microphones close to the speakers are prone to repeated sound pickup and cause howling. If the volume is adjusted too low, people far away from the speakers cannot hear the sound clearly. Utility Model Content

[0004] The utility model provides a conference sound reinforcement system to solve the problems of uneven sound reinforcement effect and easy howling of the sound reinforcement system in the conference room in the prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a conference sound reinforcement system, which includes: an audio processing module, a conference host and a microphone module;

[0006] Wherein, the microphone module includes a plurality of microphones connected in series;

[0007] The audio processing module is communicatively connected with the conference host;

[0008] The conference host is connected to one of the microphones in the microphone module;

[0009] Each of the microphones includes a sound pickup module, a processor, a power amplifier module, and a speaker module connected in sequence;

[0010] The speaker module includes a first speaker and a second speaker; the first speaker and the second speaker are installed in opposite directions on the left and right sides of the microphone in the horizontal direction;

[0011] The sound pickup module is installed above the microphone, and the direction of the sound pickup module is perpendicular to the line between the first loudspeaker and the second loudspeaker.

[0012] Furthermore, each of the microphones is evenly distributed on the conference table.

[0013] Furthermore, a plurality of the microphones are connected in series with a network cable, and the conference host is connected to one of the microphones in the microphone module with the network cable.

[0014] Furthermore, the audio processing module also includes a data transmission terminal.

[0015] Further, the conference host includes a first input end, a first output end, a second input end, a second output end, a host processor and an audio distributor, the host processor includes an input end and an output end; the audio distributor includes an input end and an output end;

[0016] The input end of the host processor is connected to the first input end of the conference host;

[0017] The output end of the host processor is connected to the first output end of the conference host;

[0018] The first output terminal of the conference host is connected to the data transmission terminal of the audio processing module;

[0019] The input end of the audio distributor is connected to the second input end of the conference host;

[0020] The second input terminal of the conference host is connected to the data transmission terminal of the audio processing module;

[0021] The output end of the audio distributor is connected to the second output end of the conference host.

[0022] Further, the conference host is connected to one of the microphones in the microphone module, specifically:

[0023] The microphone connected to the conference host is used as the first microphone; the microphone connected to the first microphone is used as the second microphone;

[0024] The processor of the first microphone includes a first input terminal, a first output terminal, a second input terminal, a second output terminal, a third input terminal, and a third output terminal;

[0025] Wherein, the output end of the sound pickup module of the first microphone is connected to the first input end of the processor of the first microphone;

[0026] A first output terminal of the processor of the first microphone is connected to a first input terminal of the conference host;

[0027] The second input terminal of the processor of the first microphone is connected to the second output terminal of the conference host;

[0028] The second output terminal of the processor of the first microphone is connected to the input terminal of the power amplifier module of the first microphone;

[0029] A third input terminal of the processor of the first microphone is connected to a first output terminal of the processor of the second microphone;

[0030] The third output terminal of the processor of the first microphone is connected to the second input terminal of the processor of the second microphone.

[0031] Further, the microphone module includes a plurality of microphones connected in series;

[0032] Wherein, the third microphone, the fourth microphone and the fifth microphone are connected in series in sequence;

[0033] The processor for each microphone includes a first input, a first output, a second input, a second output, a third input, and a third output;

[0034] The output end of the sound pickup module of the fourth microphone is connected to the first input end of the processor of the fourth microphone;

[0035] The first output terminal of the processor of the fourth microphone is connected to the third input terminal of the processor of the third microphone;

[0036] The second input terminal of the processor of the fourth microphone is connected to the third output terminal of the processor of the third microphone;

[0037] The second output terminal of the processor of the fourth microphone is connected to the input terminal of the power amplifier module of the fourth microphone;

[0038] The third input terminal of the processor of the fourth microphone is connected to the first output terminal of the processor of the third microphone;

[0039] The third output terminal of the processor of the fourth microphone is connected to the second input terminal of the processor of the third microphone.

[0040] Furthermore, the input end of the sound pickup module is connected to the input end of the microphone;

[0041] The output end of the sound pickup module is connected to the first input end of the processor;

[0042] The output end of the power amplifier module is connected to the input end of the speaker module;

[0043] The input terminal of the first speaker and the input terminal of the second speaker are both connected to the input terminal of the speaker module.

[0044] As a preferred solution, the conference room sound reinforcement system of the utility model can realize the two functions of sound pickup and sound reinforcement through the microphone. The sound reinforcement function is composed of low-power speakers built into all microphones, and the built-in speakers of the microphones are located on the left and right sides of the microphone base for horizontal sound reinforcement, and the sound pickup module of the microphone is directional, pointing to the direction of the speaker, and will not intersect with the direction of the speaker sound reinforcement, thereby greatly reducing the possibility of howling in the system; and the microphone will reduce the sound reinforcement effect of its own speaker when performing sound pickup work, thereby more effectively preventing the sound amplified by the speaker from being picked up by the microphone for the second time;

[0045] The sound reinforcement part is composed of two speakers with built-in multiple microphones, which are evenly distributed at various positions on the conference table, thus achieving the effect of uniform sound reinforcement in the conference room, and the volume heard at each position is the same. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 : A structural schematic diagram of an embodiment of a conference sound reinforcement system provided by the utility model;

[0047] Figure 2 : A top view of a microphone of an embodiment of a conference sound reinforcement system provided by the utility model;

[0048] Figure 3 : A left view of a microphone of an embodiment of a conference sound reinforcement system provided by the utility model;

[0049] Figure 4 : A schematic diagram of microphones evenly distributed and installed on a conference table in a small conference room in accordance with an embodiment of the conference sound reinforcement system provided by the utility model. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0051] Embodiment 1

[0052] Please refer to Figure 1 , which is a structural diagram of an embodiment of a conference sound reinforcement system provided by the utility model, comprising: an audio processing module 101, a conference host 102 and a microphone module 103;

[0053] Wherein, the microphone module includes a plurality of microphones connected in series;

[0054] The audio processing module is communicatively connected with the conference host;

[0055] The conference host is connected to one of the microphones in the microphone module;

[0056] Each of the microphones includes a sound pickup module, a processor, a power amplifier module, and a speaker module connected in sequence;

[0057] The speaker module includes a first speaker and a second speaker; the first speaker and the second speaker are installed in opposite directions on the left and right sides of the microphone in the horizontal direction;

[0058] The sound pickup module is installed above the microphone, and the direction of the sound pickup module is perpendicular to the line between the first loudspeaker and the second loudspeaker.

[0059] Please refer to Figure 2 and 3 , which are respectively a top view and a left view of the microphone. In this embodiment, the speakers of the microphone are distributed on the left and right sides of the bottom of the microphone, and the speakers perform horizontal sound amplification;

[0060] The sound pickup module of the microphone has unidirectionality, pointing to a line between the two loudspeakers in a vertical direction, and only picks up the sound in this direction. When the loudspeaker performs horizontal sound amplification, it will not be picked up by the directional sound pickup module.

[0061] The present invention does not limit the angle between the straight line where the sound pickup module points and the line between the speakers. In one embodiment, the sound pickup module is centered at a fixed position and can rotate in a direction perpendicular to the line between the two speakers.

[0062] Furthermore, each of the microphones is evenly distributed on the conference table.

[0063] Please refer to Figure 4 , microphones are evenly distributed and installed on the conference table in a small conference room to ensure that the microphone's speaker has a uniform sound field when amplifying sound, and the sound heard at each position is consistent.

[0064] Furthermore, a plurality of the microphones are connected in series with a network cable, and the conference host is connected to one of the microphones in the microphone module with the network cable.

[0065] Furthermore, the audio processing module also includes a data transmission terminal.

[0066] Further, the conference host includes a first input end, a first output end, a second input end, a second output end, a host processor and an audio distributor, the host processor includes an input end and an output end; the audio distributor includes an input end and an output end;

[0067] The input end of the host processor is connected to the first input end of the conference host;

[0068] The output end of the host processor is connected to the first output end of the conference host;

[0069] The first output terminal of the conference host is connected to the data transmission terminal of the audio processing module;

[0070] The input end of the audio distributor is connected to the second input end of the conference host;

[0071] The second input terminal of the conference host is connected to the data transmission terminal of the audio processing module;

[0072] The output end of the audio distributor is connected to the second output end of the conference host.

[0073] Further, the conference host is connected to one of the microphones in the microphone module, specifically:

[0074] The microphone connected to the conference host is used as the first microphone; the microphone connected to the first microphone is used as the second microphone;

[0075] The processor of the first microphone includes a first input terminal, a first output terminal, a second input terminal, a second output terminal, a third input terminal, and a third output terminal;

[0076] Wherein, the output end of the sound pickup module of the first microphone is connected to the first input end of the processor of the first microphone;

[0077] A first output terminal of the processor of the first microphone is connected to a first input terminal of the conference host;

[0078] The second input terminal of the processor of the first microphone is connected to the second output terminal of the conference host;

[0079] The second output terminal of the processor of the first microphone is connected to the input terminal of the power amplifier module of the first microphone;

[0080] A third input terminal of the processor of the first microphone is connected to a first output terminal of the processor of the second microphone;

[0081] The third output terminal of the processor of the first microphone is connected to the second input terminal of the processor of the second microphone.

[0082] In this embodiment, the sound pickup module is used to collect audio through the input end, generate an analog audio signal, and send the generated analog audio signal to the processor.

[0083] The processor is used to convert the received analog audio signal into a digital audio signal, and transmit the digital audio signal to the host processor of the conference host through the connected network cable.

[0084] The host processor of the conference host sends the digital audio signal to the audio processing module;

[0085] The audio processing module is used to optimize the received digital audio signal using an audio processing algorithm and send it to the audio distributor of the conference host.

[0086] The audio distributor is used to distribute the received digital audio signal to the corresponding microphone.

[0087] The processor is used for receiving the digital audio signal distributed by the conference host and sending it to the power amplifier module. The processor is also used for adjusting the parameters of the power amplifier module.

[0088] The power amplifier module of each microphone can independently adjust the amplification factor of the digital audio signal. The parameters of the power amplifier module can be adjusted through the microphone processor to cope with more meeting situations. It is also beneficial for the tuner to adjust the amplification factor of the power amplifier module of each microphone according to the specific situation of the conference room to achieve the best sound reinforcement effect.

[0089] The power amplification module is used to amplify the received digital audio signal and send the amplified digital audio signal to two speakers.

[0090] When one or more microphones are picking up sound, the processor will adjust and reduce the amplification factor of the digital audio signal by the power amplifier module to prevent the microphone from picking up the sound played by its own speaker again, so as to clearly pick up the speaker's voice.

[0091] The two loudspeakers play the received digital audio signals.

[0092] Further, the microphone module includes a plurality of microphones connected in series;

[0093] Wherein, the third microphone, the fourth microphone and the fifth microphone are connected in series in sequence;

[0094] The processor for each microphone includes a first input, a first output, a second input, a second output, a third input, and a third output;

[0095] The output end of the sound pickup module of the fourth microphone is connected to the first input end of the processor of the fourth microphone;

[0096] The first output terminal of the processor of the fourth microphone is connected to the third input terminal of the processor of the third microphone;

[0097] The second input terminal of the processor of the fourth microphone is connected to the third output terminal of the processor of the third microphone;

[0098] The second output terminal of the processor of the fourth microphone is connected to the input terminal of the power amplifier module of the fourth microphone;

[0099] The third input terminal of the processor of the fourth microphone is connected to the first output terminal of the processor of the third microphone;

[0100] The third output terminal of the processor of the fourth microphone is connected to the second input terminal of the processor of the third microphone.

[0101] In this embodiment, each microphone is connected to its own processor with a network cable, so that each microphone can convert the analog audio signal obtained by its own pickup module into a digital audio signal, and then transmit the digital audio signal to the conference host for processing through the processor of the microphone connected between the current microphone and the conference host; at the same time, the conference host can transmit the processed digital audio signal to the processor of the corresponding microphone through the processor of each microphone.

[0102] Furthermore, the input end of the sound pickup module is connected to the input end of the microphone;

[0103] The output end of the sound pickup module is connected to the first input end of the processor;

[0104] The output end of the power amplifier module is connected to the input end of the speaker module;

[0105] The input terminal of the first speaker and the input terminal of the second speaker are both connected to the input terminal of the speaker module.

[0106] Implementing this embodiment has the following effects:

[0107] The conference room sound reinforcement system of the utility model can realize two functions of sound pickup and sound reinforcement through the microphone. The sound reinforcement function is composed of low-power speakers built into all microphones, and the speakers built into the microphones are located on the left and right sides of the microphone base for horizontal sound reinforcement, and the sound pickup module of the microphone is directional, pointing to the speaker direction, and will not intersect with the direction of the speaker sound reinforcement, thereby greatly reducing the possibility of howling in the system; and the microphone will reduce the sound reinforcement effect of its own speaker when picking up sound, thereby more effectively preventing the sound amplified by the speaker from being picked up by the microphone for the second time;

[0108] The sound reinforcement part is composed of two speakers with built-in multiple microphones, which are evenly distributed at various positions on the conference table, thus achieving the effect of uniform sound reinforcement in the conference room, and the volume heard at each position is the same.

[0109] The specific embodiments described above further describe the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only a specific embodiment of the utility model and is not intended to limit the protection scope of the utility model. It is particularly pointed out that for those skilled in the art, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A conference sound reinforcement system, characterized in that: include: Audio processing module, conference host and microphone module; Wherein, the microphone module includes a plurality of microphones connected in series; The audio processing module is communicatively connected with the conference host; The conference host is connected to one of the microphones in the microphone module; Each of the microphones comprises a sound pickup module, a processor, a power amplifier module, and a speaker module connected in sequence; The speaker module includes a first speaker and a second speaker; the first speaker and the second speaker are installed in opposite directions on the left and right sides of the microphone in the horizontal direction; The sound pickup module is installed above the microphone, and the direction of the sound pickup module is perpendicular to the line between the first loudspeaker and the second loudspeaker.

2. A conference sound reinforcement system as claimed in claim 1, characterized in that: Each of the microphones is evenly distributed on the conference table.

3. A conference sound reinforcement system as claimed in claim 1, characterized in that: A plurality of the microphones are connected in series via a network cable, and the conference host is connected to one of the microphones in the microphone module via a network cable.

4. A conference sound reinforcement system as claimed in claim 1, characterized in that: The audio processing module also includes a data transmission terminal.

5. A conference sound reinforcement system as claimed in claim 1, characterized in that: The conference host comprises a first input terminal, a first output terminal, a second input terminal, a second output terminal, a host processor and an audio distributor, wherein the host processor comprises an input terminal and an output terminal; the audio distributor comprises an input terminal and an output terminal; The input end of the host processor is connected to the first input end of the conference host; The output end of the host processor is connected to the first output end of the conference host; The first output terminal of the conference host is connected to the data transmission terminal of the audio processing module; The input end of the audio distributor is connected to the second input end of the conference host; The second input terminal of the conference host is connected to the data transmission terminal of the audio processing module; The output end of the audio distributor is connected to the second output end of the conference host.

6. A conference sound reinforcement system as claimed in claim 5, characterized in that: The conference host is connected to one of the microphones in the microphone module, specifically: The microphone connected to the conference host is used as the first microphone; the microphone connected to the first microphone is used as the second microphone; The processor of the first microphone includes a first input terminal, a first output terminal, a second input terminal, a second output terminal, a third input terminal, and a third output terminal; Wherein, the output end of the sound pickup module of the first microphone is connected to the first input end of the processor of the first microphone; A first output terminal of the processor of the first microphone is connected to a first input terminal of the conference host; The second input terminal of the processor of the first microphone is connected to the second output terminal of the conference host; The second output terminal of the processor of the first microphone is connected to the input terminal of the power amplifier module of the first microphone; A third input terminal of the processor of the first microphone is connected to a first output terminal of the processor of the second microphone; The third output terminal of the processor of the first microphone is connected to the second input terminal of the processor of the second microphone.

7. A conference sound reinforcement system as claimed in claim 1, characterized in that: The microphone module includes a plurality of microphones connected in series; Wherein, the third microphone, the fourth microphone and the fifth microphone are connected in series in sequence; The processor for each microphone includes a first input, a first output, a second input, a second output, a third input, and a third output; The output end of the sound pickup module of the fourth microphone is connected to the first input end of the processor of the fourth microphone; The first output terminal of the processor of the fourth microphone is connected to the third input terminal of the processor of the third microphone; The second input terminal of the processor of the fourth microphone is connected to the third output terminal of the processor of the third microphone; The second output terminal of the processor of the fourth microphone is connected to the input terminal of the power amplifier module of the fourth microphone; The third input terminal of the processor of the fourth microphone is connected to the first output terminal of the processor of the third microphone; The third output terminal of the processor of the fourth microphone is connected to the second input terminal of the processor of the third microphone.

8. A conference sound reinforcement system as claimed in claim 1, characterized in that: Also includes: The input end of the sound pickup module is connected to the input end of the microphone; The output end of the sound pickup module is connected to the first input end of the processor; The output end of the power amplifier module is connected to the input end of the speaker module; The input terminal of the first speaker and the input terminal of the second speaker are both connected to the input terminal of the speaker module.

Images