WO2014153938A1 - 基于波束控制的吊顶式音响装置 - Google Patents

基于波束控制的吊顶式音响装置 Download PDF

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Publication number
WO2014153938A1
WO2014153938A1 PCT/CN2013/084636 CN2013084636W WO2014153938A1 WO 2014153938 A1 WO2014153938 A1 WO 2014153938A1 CN 2013084636 W CN2013084636 W CN 2013084636W WO 2014153938 A1 WO2014153938 A1 WO 2014153938A1
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Prior art keywords
module
controller
speaker array
user
speaker
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PCT/CN2013/084636
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English (en)
French (fr)
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马登永
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苏州上声电子有限公司
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Publication of WO2014153938A1 publication Critical patent/WO2014153938A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B5/00—Near-field transmission systems, e.g. inductive loop type
    • 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
    • H04R3/12—Circuits for transducers, loudspeakers or microphones for distributing signals to two or more loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R5/00—Stereophonic arrangements
    • H04R5/02—Spatial or constructional arrangements of loudspeakers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2203/00—Details of circuits for transducers, loudspeakers or microphones covered by H04R3/00 but not provided for in any of its subgroups
    • H04R2203/12—Beamforming aspects for stereophonic sound reproduction with loudspeaker arrays

Definitions

  • the invention relates to an acoustic device, in particular to a ceiling-mounted acoustic device based on beam control.
  • an object of the present invention is to provide a ceiling-mounted acoustic device based on beam control, which can create a personal sound field with 3D surround sound without disturbing the working life of others outside the coverage area.
  • an aspect of the present invention provides a ceiling-mounted acoustic device based on beam control, the ceiling-mounted acoustic device comprising: an audio product having a first end and a second end, and interacting with the first end of the audio product
  • the controller, the sound module, and the sound module include a wireless module, a beam control module, a power amplifier module, and a speaker array. After the audio product issues the command information, the controller completes the pairing of the sound module with the audio product. The controller can also receive or generate information desired by the user.
  • the wireless module is interactively coupled to the second end of the audio product for receiving wireless data transmitted by the audio product.
  • the beam control module is electrically connected to the controller and the wireless module, and processes the wireless data received by the wireless module and the information desired by the user received by the controller to generate a beam pattern that matches the information desired by the user.
  • the power amplifier module is adjusted according to the beam pattern.
  • the input end of the power amplifier module is connected to the output end of the beam control module, and the output end of the power amplifier module is electrically connected to the speaker array for driving each speaker unit in the speaker array under the control of the beam control module.
  • the speaker array includes a plurality of speaker units, each of which is used to implement electroacoustic conversion.
  • the information desired by the user includes the number of listeners, the position of the listener, and the number of channels.
  • the audio product is one of a handheld computer, a smart phone, a digital video camera, an electronic book reader, an audio player, and a video player.
  • the controller comprises an input device, a response device and a microprocessor.
  • the input device is used to input the pairing command, the number of listeners, and the number of channels.
  • the response device is configured to prompt the user for a successful response to the command entered.
  • the microprocessor is used to respond to commands entered by the user.
  • the wireless module is a Bluetooth module or a wifi module.
  • the beam steering module comprises a memory, a data buffer and a signal processor.
  • the memory is used to store the division type of the speaker array and the corresponding control parameters of the sub-speaker array under each division type.
  • the signal processor is used to search for adaptation of user input information, update control parameters of each sub-speaker array, and perform beam steering.
  • the data buffer is used to buffer various data that the signal processor loads from the memory.
  • the speaker array comprises a woofer unit, a midrange unit, and a tweeter unit.
  • the speaker array includes a woofer unit, a midrange unit, a tweeter unit, and a subwoofer unit. Also, the subwoofer unit is placed in the center of the microphone array.
  • Another aspect of the present invention provides a method for operating a beam-controlled ceiling-mounted acoustic device as described above, which includes the following steps:
  • the audio product transmits the sound source file to be played to the wireless module of the sounding module;
  • the user enters the expected information into the controller and confirms the submission, and the controller uploads the user desired information to the beam control module of the sounding module;
  • the signal processor of the controller queries and specifies the division manner of the sub-speaker array matching the expected information of the user in the memory;
  • the signal processor again queries from the memory and specifies the control parameters of the sub-speaker array that match the division manner of the sub-speaker array specified in step d;
  • the signal processor updates the control parameters of each sub-speaker array, and the power amplifier module drives the sub-speaker array to sound.
  • the present invention adopts the above technical solutions, and has the following advantages compared with the prior art:
  • the sound field is covered in the area designated by the user, and the sound radiation of the array in other areas is attenuated, thereby effectively reducing the diffusion and pollution of the sound field, and is suitable for personal private sound field reconstruction in public places, avoiding Acoustic interference to other people around it also increases the acoustic radiation efficiency of the array to a designated area;
  • It is capable of generating multiple acoustic beams and forming overlapping regions of multiple beams at a user-specified location, thereby providing multi-channel surround sound effects, increasing the sense of presence, envelopment and immersion of music and video works, and improving playback.
  • the quality level of the sound field
  • Figure 1 is a schematic view of a ceiling type acoustic device in accordance with the present invention.
  • Figure 2 is a flow chart showing the signal processing of the ceiling type acoustic device according to the present invention
  • FIG. 3 is a block diagram showing the structure of a controller in accordance with an embodiment of the present invention.
  • FIG. 4 is a block diagram showing the structure of a beam control module in accordance with an embodiment of the present invention.
  • FIG. 5 is a flowchart showing the operation of a beam control module according to an embodiment of the invention.
  • FIG. 6 is a schematic diagram of array division of a beam control module in a single channel beamforming process according to an embodiment of the invention
  • FIG. 7 is a schematic diagram of beam crossover of a beam control module in the case of single channel beamforming according to an embodiment of the invention.
  • FIG. 8 is a schematic diagram of array division of a beam control module in a two-channel beam generation process according to an embodiment of the invention.
  • FIG. 9 is a schematic diagram of beam crossover of a beam control module in a two-channel beam generation process according to an embodiment of the invention.
  • FIG. 10 is a schematic diagram of array division of a beam control module in a five-channel beamforming process according to an embodiment of the invention.
  • FIG. 11 is a schematic diagram of beam crossover of a beam control module in the case of five-channel beamforming according to an embodiment of the invention.
  • FIG. 12 is a schematic diagram of array division of a beam control module in a seven-channel beamforming process according to an embodiment of the invention.
  • FIG. 13 is a schematic diagram of beam crossover of a beam control module in a seven-channel beamforming process according to an embodiment of the invention.
  • FIG. 14 is a schematic diagram of reconstruction of a user-defined sound field in accordance with an embodiment of the present invention.
  • 15 is a schematic diagram of speaker array division of a beam control module of a user-customized sound field according to an embodiment of the invention.
  • 16 is a schematic diagram of a multi-beam intersection region of a beam control module of a seat 1 of a user-customized sound field according to an embodiment of the invention
  • 17 is a schematic diagram of a multi-beam intersection region of a beam control module of a seat 2 of a user-customized sound field in accordance with an embodiment of the present invention.
  • controller 21, touch screen; 22, button; 23, status indication module; 24, voice prompt module; 25, microprocessor;
  • a ceiling-mounted acoustic device based on beam control the sounding module 3 is suspended from the ceiling 4, and the sounding module 3 includes a wireless module 31, a beam control module 32, a power amplifier module 33, and a speaker array 34.
  • the range indicated by the broken line in Fig. 1 is the beam coverage area 5 of the beam-controlled ceiling type acoustic device, and the controller 2 and the listener are both in the beam coverage area 5.
  • a beam-controlled ceiling type acoustic device includes:
  • a smart phone 1 having a first end that is interactively coupled to the controller 2 and a second end that is wirelessly coupled to the wireless module 31;
  • the controller 2 is connected to the first end of the smart phone 1.
  • the controller 2 completes the pairing of the sounding module 3 with the smart phone 1, and the controller 2 can also receive or generate the user's Expectation information;
  • Sounding module 3 comprising:
  • a wireless module 31 which is interactively coupled to the second end of the audio product for receiving wireless data transmitted by the audio product;
  • the beam control module 32 is electrically connected to the controller and the wireless module 31, and processes the wireless data received by the wireless module 31 and the expected information of the user received by the controller 2 to generate a user's A beam pattern matching the information is expected, and the power amplifier module 33 is adjusted according to the beam pattern;
  • the power amplifier module 33 has an input end connected to the output end of the beam control module 32, and an output end of the power amplifier module 33 is electrically connected to the speaker array 34, and the speaker is driven under the control of the beam control module 32.
  • a speaker array 34 includes a plurality of speaker units 340, each for realizing electroacoustic conversion.
  • the smart phone 1 with Bluetooth function can establish a wireless connection with the Bluetooth stereo pairing method of the ceiling type stereo 3 paper piece, and the sound source file to be played in the smart phone 1 is transmitted to the real time through the Bluetooth connection to the real time.
  • the ceiling type sound 3 is used for realizing the sound reproduction operation;
  • the controller 2 provides a Bluetooth pairing service between the smart phone 1 and the ceiling type speaker 3, and provides an input interface for the user to input information such as the number of listeners, the position of the listener, the number of channels, and the like.
  • the controller 2 uploads the information of the sound field customized by the user to the beam control module 32; the wireless module 31 receives the wireless data and instructions sent by the smart phone 1, and also The smart phone 1 provides response information; the beam control module 32 loads the control parameters required by the speaker units 340 of the speaker array 34 that match the sound field information according to the sound field information customized by the user, and downloads and updates the control parameters, thereby Generate a beam pattern that matches the user's custom sound field requirements.
  • the controller 2 includes an input device, a response device, and a microprocessor 25.
  • the input device is a touch screen 21, a button 22, the response device is a status indication module 23, an audio prompt module 24, and the touch screen.
  • the button 22 is configured to input a pairing command, a number of listeners, a listener position, and a number of channels.
  • the state indicating module 23 and the voice prompting module 24 are configured to prompt the user whether the command successfully input, the microprocessor 25 An instruction to answer user input.
  • the controller 2 provides pairing for a wireless connection between a portable audio product such as a smart phone and the ceiling-mounted stereo 3, and the pairing can be implemented in two ways: manual pairing and automatic pairing.
  • Manual pairing starts the pairing function of the audio product, searches for the sounding module, sets the user name and password, completes the pairing work and successfully establishes the wireless network connection.
  • Automatic pairing is available with NFC (Near The Field Communication function enables the pairing function to be automatically performed based on the NFC communication mode by close proximity or contact with the controller 2.
  • the beam control module 32 includes a memory 321, a data buffer 322, and a signal processor 323 for storing the division type of the speaker array 34 and corresponding subdivision types.
  • Control parameters of the sub-speaker array the signal processor 323 is configured to search and adapt user input information, after specifying the division type of the speaker array and the control parameters of the sub-speaker array, updating the control parameters of each sub-speaker array and executing each sub-s Beam steering of the speaker array, the data buffer 322 is used to buffer various data that the signal processor 323 loads from the memory 321 .
  • a method for operating a beam control module 32 of a beam-controlled ceiling-mounted acoustic device includes the following steps:
  • the signal processor 323 queries and specifies in the memory 321 the division manner of the speaker array that matches the user input information according to information such as the number of listeners input by the user, the position of the listening position, and the number of output channels. ;
  • the signal processor 323 again queries from the memory 321 and specifies the control of the sub-speaker array that matches the division manner of the speaker array specified in the step a. parameter;
  • the signal processor 323 updates the control parameters of each sub-speaker array to activate the sub-speaker array to enter a normal working state.
  • the beam control module 32 establishes a playback sound field that matches the user's needs based on the number of listeners input by the user and the number of channels that need to be played.
  • the beam steering module 32 divides each speaker unit based on the number of generated beams.
  • beam steering module 32 selects only a portion of speaker units 340 in speaker array 34 to form a sub-speaker array.
  • a single beam is generated from this single sub-speaker array to form a single channel sound field reconstruction.
  • beam steering module 32 may select a portion of speaker unit 340 in speaker array 34 to form two sub-speaker arrays. Two beams are generated by the two sub-speaker arrays, forming a stereo-effect sound field reconstruction at the intersection of the two beams.
  • the beam control module 32 can select the speaker units 340 of the speaker array 34 to form five sub-speaker arrays, respectively, and divide the speaker array 34 into five sub-speaker arrays.
  • Five beams are generated from the five sub-speaker arrays, and a sound field reconstruction with 5.1 surround sound is formed at the intersection of the five beams.
  • the beam steering module 32 can select the speaker units 340 of the speaker array 34 to form seven sub-speaker arrays, respectively, and divide the speaker array 34 into seven sub-speaker arrays. Seven beams were generated from the seven sub-speaker arrays, and a sound field reconstruction with a 7.1 surround sound effect was formed at the intersection of the seven beams.
  • the number of speaker units 340 of the sounding module also needs to be correspondingly increased, and the beam control module 32 also performs a more complicated sub-speaker array division on the speaker array 34, so as to form more beam crossovers.
  • the area meets the audiovisual needs of more listeners.
  • the user customizes the information of the sound field as follows: the number of listeners is 2, and the two listeners sit side to side, and the desired number of channels is 5.
  • the beam control module 32 obtains the sound field information input by the user, the speaker array is matched with the user-defined sound field information in the memory 321; after the query is completed, the specified speaker array division mode and the user-defined sound field information are performed.
  • the control parameters of the matched sub-speaker arrays are queried; after the control parameter query is completed, the specified sub-speaker array control parameters are read into the signal processor 323 through the data buffer 322.
  • signal processor 323 divides speaker array 34 into ten sub-speaker arrays, corresponding to a seat having five sub-speaker arrays, corresponding to seat two having five sub-speaker arrays.
  • the five sub-speaker arrays of the seat one, according to the beam control parameters of the five sub-speaker arrays, corresponding five beams are generated, and the five beams generate intersection regions at one seat, forming a surround sound effect of five channels.
  • the five sub-speaker arrays corresponding to Seat 2 also create a beam crossing area at Seat 2, which also forms a surround sound effect of five channels.
  • the speaker array 34 needs to select a speaker unit for array according to actual application requirements.
  • the speaker array may include a woofer, a midrange unit, and a tweeter.
  • the shape of the speaker array 34 and the number of speaker units are set according to actual needs.
  • the speaker array does not include the subwoofer unit, considering the diffusion effect of the subwoofer. If you have heavy bass demand, such as multimedia home theater, game hall, etc., consider installing a subwoofer in the center of the speaker array or configuring a subwoofer.
  • the subwoofer unit is not required to be audible, it can be turned off by the controller 2; when the subwoofer unit is required to be turned on, it is turned on normally.
  • the operation method of the beam-controlled ceiling type acoustic device is as follows:
  • the audio product transmits the sound source file to be played to the wireless module of the sounding module;
  • the user enters the expected information into the controller and confirms the submission, and the controller uploads the user desired information to the beam control module of the sounding module;
  • the signal processor of the controller queries and specifies the division manner of the sub-speaker array matching the expected information of the user in the memory;
  • the signal processor again queries from the memory and specifies the control parameters of the sub-speaker array that match the division manner of the sub-speaker array specified in step d;
  • the signal processor updates the control parameters of each sub-speaker array, and the power amplifier module drives the sub-speaker array to sound.

Abstract

提供一种基于波束控制的吊顶式音响装置，该装置包括：一音频产品，其具有与控制器相交互连接的第一端以及与无线模块相无线交互连接的第二端；控制器，其与音频产品的第一端相交互连接，当音频产品发出指令信息后，控制器完成发声模块与音频产品的配对，控制器还可接收或生成用户的期望信息；发声模块，其包括：无线模块，其与音频产品的第二端相交互连接；以及波束控制模块，与控制器和无线模块相电连接；功放模块，其输入端与波束控制模块的输出端相连接，功放模块的输出端与所述扬声器阵列相电连接；扬声器阵列，其包括多个扬声器单元，每个扬声器单元用于实现电声转换。

Description

基于波束控制的吊顶式音响装置
技术领域
本发明涉及一种音响装置，特别涉及一种基于波束控制的吊顶式音响装置。
背景技术
随着超大规模集成电路及电池蓄电技术的快速发展，便携式消费类音频产品——掌上电脑、智能手机、数字摄像机、电子图书阅读器、个人声频视频播放器等的应用日益广泛，为人们日常的工作生活提供了极大的便利性。这些音频产品通常都带有NFC、蓝牙、Wi-Fi等无线接口，能够灵活快捷的与其他带有同样无线接口的音频产品建立无线连接并进行数据交换。基于这些无线接口技术，目前市场上也出现了基于蓝牙或者Wi-Fi的无线音响产品，这些音响产品通常都是作为智能手机的外置配件使用，为智能手机提供外置的声场重放。这些无线音响产品通常配备双通道立体声扬声器，能够获得立体声重放效果，适合于营造空旷环境下仅供个人使用的小区域覆盖范围的个人声场，由于仅有两个声道的输出，无法获得更高层次的环绕声效果。由于声场扩散的限制，这些无线音响产品仅适合家居或户外空旷场所的个人视听应用，并不适合于推广到公众场所——餐馆、酒吧、商场、机场、火车站、停车场、医院、图书馆、银行等进行个人私密视听应用。
在公众场合营造私密的个性化声场，在个人欣赏音视频作品的同时，也不妨碍其他人的视听，这一应用场景涉及到扬声器阵列的局部声场控制课题，而该课题一直是许多学者长期关注并致力解决的关键问题。目前，国际上最为代表性的两个研究机构——英国南安普顿大学声与振动研究所(Institute of Sound and Vibration Research，ISVR)和韩国科学技术院（Korea Advanced Institute of Science and Technology，KAIST）都针对这一课题开展了长期广泛的研究，并取得了一系列的研究成果。ISVR 研究所的S. J. Elliott教授研究了线性扬声器阵列的声聚焦效果，并测试了单波束情况下的聚焦性能，在语言声重放情况下得到了较为满意的效果。KAIST 研究所的Y. -H. Kim教授也一直致力于个性化声场的控制课题研究，通过明暗对比控制算法，将阵列声场控制在局部区域内。这些局部声场控制的研究成果，为虚拟环绕声场的实现提供了理论支撑。
现有无线音响产品都使用较少的扬声器通道，并没有考虑扬声器组阵进行虚拟环绕声场的重放应用。在公众场所，这些产品在为个人提供声场重放的同时会对周围其他人的视听造成干扰，产生一定程度的声污染。现有的局部声场控制算法，都集中在单阵列和单波束的局部声场控制工作，还没有开展多阵列和多波束的应用研究。
针对现有无线音响在私密性个人声场重建方面所存在的缺陷性，同时结合局部声场控制算法的进展和公众场所私密性声场重建的应用需求，因此需要寻找一种具有多波束生成功能的无线吊顶音响，基于波束控制功能为局部区域内提供多个声束的交叉覆盖，从而营造出具有3D环绕声效的个人声场，同时也不干扰覆盖区域之外他人的工作生活。
发明内容
针对上述问题，本发明的目的是提供一种基于波束控制的吊顶式音响装置，其能营造出具有3D环绕声效的个人声场，同时也不干扰覆盖区域之外他人的工作生活。
为解决上述技术问题，本发明一方面提供一种基于波束控制的吊顶式音响装置，该吊顶式音响装置包括：具有第一端以及第二端的音频产品、与音频产品的第一端相交互连接的控制器、发声模块，发声模块包括无线模块、波束控制模块、功放模块以及扬声器阵列。当音频产品发出指令信息后，控制器完成发声模块与音频产品的配对。控制器还可接收或生成用户期望的信息。无线模块与音频产品的第二端相交互连接，用于接收由所述音频产品发出的无线数据。波束控制模块与控制器和无线模块相电连，其对通过无线模块接收到的无线数据与通过控制器接收到的用户期望的信息进行处理，生成与用户期望的信息相匹配的波束方向图，并根据波束方向图对功放模块进行调节。功放模块的输入端与波束控制模块的输出端相连接，功放模块的输出端与扬声器阵列相电连，用于在波束控制模块的控制下驱动扬声器阵列中的各扬声器单元。扬声器阵列包括多个扬声器单元，每个扬声器单元用于实现电声转换。
具体地，用户期望的信息包括听者人数、听者位置以及声道数。
优选地，音频产品为掌上电脑、智能手机、数字摄像机、电子图书阅读器、声频播放器、视频播放器中的一种。
优选地，控制器包括输入装置、响应装置及微处理器。输入装置用于输入配对指令、听者人数及声道数。响应装置用于提示用户输入的命令是否成功响应。微处理器用于应答用户输入的指令。
优选地，无线模块为蓝牙模块，或者为wifi模块。
优选地，波束控制模块包括存储器、数据缓存器及信号处理器。存储器用于存储扬声器阵列的划分类型和对应的各划分类型下的子扬声器阵列的控制参数。信号处理器用于搜索适配用户输入信息、更新各子扬声器阵列的控制参数、执行波束控制。数据缓存器用于缓存信号处理器从存储器调入的各种数据。
优选地，扬声器阵列包括低音单元、中音单元、高音单元。
更优选地，扬声器阵列包括低音单元、中音单元、高音单元及重低音单元。并且，重低音单元设置在传声器阵列的中央。
本发明另一方面提供一种上述基于波束控制的吊顶式音响装置的的操作方法，其包括如下步骤：
a、通过控制器将音频产品与发声模块配对；
b、配对成功后，音频产品将待播放的声源文件传输到发声模块的无线模块；
c、用户将期望信息录入到控制器中并确认提交，控制器上传用户期望信息到发声模块的波束控制模块内；
d、根据无线模块接收到的无线数据与通过控制器接收到的用户的期望信息，控制器的信号处理器在存储器中查询并指定与用户期望信息相匹配的子扬声器阵列的划分方式；
e、基于用户期望信息和子扬声器阵列的划分方式，信号处理器再次从存储器中查询并指定与步骤d中指定的子扬声器阵列的划分方式相匹配的子扬声器阵列的控制参数；
f、信号处理器更新各子扬声器阵列的控制参数，功放模块驱动子扬声器阵列发声。
本发明采用以上技术方案，相比现有技术具有如下优点：
能够灵活便捷的与现有便携式消费类音频产品——掌上电脑、智能手机、数字摄像机、电子图书阅读器、个人声频 / 视频播放器等进行无线连接，并为这些音频产品提供高品质的声重放；
能够通过控制阵列的辐射波束，将声场覆盖在用户所指定区域内，并衰减阵列在其他区域的声辐射，有效减少了声场的扩散和污染，适合应用于公众场合的个人私密声场重建，避免了对周围其他人员的声干扰，也提高了阵列向指定区域的声辐射效率；
能够产生多个声波束，并在用户指定位置形成多个波束的交叉区域，从而提供了多声道的环绕声效，增加了音乐及影视作品的临场感、包围感和沉浸感，提高了重放声场的品质水平；
通过吊顶安装，既保持室内装饰的美观大方，也节省了对室内地面空间的占用，同时适合于兼容所有配备蓝牙或Wi-Fi的音频产品，实用性强。
附图说明
图1为根据本发明的吊顶式音响装置的示意图；
图2为根据本发明的吊顶式音响装置的信号处理流程图；
图3为根据本发明的一实施例中的控制器的组成结构框图；
图4为根据本发明的一实施例中的波束控制模块的组成结构框图；
图5为根据本发明的一实施例中的波束控制模块的工作流程图；
图6为根据本发明的一实施例中的波束控制模块在单通道波束生成情况下，其阵列划分示意图；
图7为根据本发明的一实施例中的波束控制模块在单通道波束生成情况下，其波束交叉情况示意图；
图8为根据本发明的一实施例中的波束控制模块在两通道波束生成情况下，其阵列划分示意图；
图9为根据本发明的一实施例中的波束控制模块在两通道波束生成情况下，其波束交叉情况示意图；
图10为根据本发明的一实施例中的波束控制模块在五通道波束生成情况下，其阵列划分示意图；
图11为根据本发明的一实施例中的波束控制模块在五通道波束生成情况下，其波束交叉情况示意图；
图12为根据本发明的一实施例中的波束控制模块在七通道波束生成情况下，其阵列划分示意图；
图13为根据本发明的一实施例中的波束控制模块在七通道波束生成情况下，其波束交叉情况示意图；
图14为根据本发明的一实施例中的用户定制声场的重建示意图；
图15为根据本发明的一实施例中的用户定制声场的波束控制模块的扬声器阵列划分示意图；
图16为根据本发明的一实施例中的用户定制声场的座位一的波束控制模块的多波束交叉区域示意图；
图17为根据本发明的一实施例中的用户定制声场的座位二的波束控制模块的多波束交叉区域示意图。
其中：1、智能手机；
2、控制器；21、触摸屏；22、按键；23、状态指示模块；24、声音提示模块；25、微处理器；
3、发声模块；31、无线模块；32、波束控制模块；321、存储器；322、数据缓存器；323、信号处理器；33、功放模块；34、扬声器阵列；340、扬声器单元；341、子扬声器阵列；
4、天花板；
5、波束覆盖区域。
具体实施方式
下面结合附图对本发明的较佳实施例进行详细阐述，以使本发明的优点和特征能更易于被本领域的技术人员理解，从而对本发明控制器的保护范围作出更为清楚明确的界定。
实施例
参照附图1所示，一种基于波束控制的吊顶式音响装置，发声模块3悬挂设置在天花板4下方，发声模块3包括无线模块31、波束控制模块32、功放模块33以及扬声器阵列34。附图1中虚线所示范围为该基于波束控制的吊顶式音响装置的波束覆盖区域5，控制器2以及听者均处于该波束覆盖区域5内。
参照附图2所示，一种基于波束控制的吊顶式音响装置，包括：
一智能手机1，其具有与控制器2相交互连接的第一端以及与无线模块31相无线交互连接的第二端；
控制器2，其与智能手机1的第一端相交互连接，当智能手机1发出指令信息后，控制器2完成发声模块3与智能手机1的配对，控制器2还可接收或生成用户的期望信息；
发声模块3，其包括：
无线模块31，其与所述音频产品的第二端相交互连接，用于接收由音频产品发出的无线数据；以及
波束控制模块32，与所述控制器和所述无线模块31相电连，其对通过无线模块31接收到的无线数据与通过控制器2接收到的用户的期望信息进行处理，生成与用户的期望信息相匹配的波束方向图，并根据波束方向图对功放模块33进行调节；
功放模块33，其输入端与所述波束控制模块32的输出端相连接，所述功放模块33的输出端与所述扬声器阵列34相电连，在波束控制模块32的控制下驱动所述扬声器阵列34中的各扬声器单元340；
扬声器阵列34，其包括多个扬声器单元340，每个扬声器单元340用于实现电声转换。
其工作原理如下：带有蓝牙功能的智能手机1能够与吊顶式音响3纸件通过帐号密码的蓝牙配对方式建立无线连接，通过蓝牙连接将智能手机1中的待播放的声源文件实时传输到吊顶式音响3以实现声重放操作；控制器2为智能手机1与吊顶式音箱3之间提供蓝牙配对服务，同时为用户输入听者人数、听者位置、声道数等信息提供输入界面，待用户完成声场信息的录入及确认提交后，控制器2上传用户所定制的声场的信息到波束控制模块32内；无线模块31接收由智能手机1发来的无线数据和指令，同时也向智能手机1提供应答信息；波束控制模块32根据用户所定制的声场信息，调入与该声场信息相匹配的扬声器阵列34的各扬声器单元340所需的控制参数，并下载更新该控制参数，从而生成与用户定制声场需求相匹配的波束方向图。
参照附图3所示，所述控制器2包括输入装置、响应装置及微处理器25，输入装置为触摸屏21、按键22，响应装置为状态指示模块23、声音提示模块24及，所述触摸屏21、按键22用于输入配对指令、听者人数、听者位置及声道数，所述状态指示模块23、声音提示模块24用于提示用户输入的命令是否成功响应，所述微处理器25用于应答用户输入的指令。
控制器2为智能手机等便携式音频产品和吊顶式音响3之间的无线连接提供配对，配对的实现方式可以为两种：手动配对和自动配对。手动配对通过启动音频产品的配对功能，搜索发声模块，设置用户名与密码，完成配对工作并成功建立无线网络连接。自动配对适用于带有NFC（Near Field Communication）功能的音频产品，可以通过与控制器2进行近距离靠近或碰触，基于NFC通信模式自动完成配对功能。
参照附图4所示，所述波束控制模块32包括存储器321、数据缓存器322及信号处理器323，所述存储器321用于存储所述扬声器阵列34的划分类型和对应的各划分类型下的子扬声器阵列的控制参数，所述信号处理器323用于搜索适配用户输入信息，在指定扬声器阵列的划分类型及子扬声器阵列的控制参数后，更新各子扬声器阵列的控制参数并执行各子扬声器阵列的波束控制，所述数据缓存器322用于缓存所述信号处理器323从存储器321调入的各种数据。
参照附图5所示，一种基于波束控制的吊顶式音响装置的波束控制模块32的操作方法，包括以下步骤：
(1)、根据用户输入的听者人数、听着位置及输出声道数等信息，所述信号处理器323在所述存储器321中查询并指定与用户输入信息相匹配的扬声器阵列的划分方式；
(2)、基于用户输入信息和子扬声器阵列的划分方式，所述信号处理器323再次从所述存储器321中查询并指定与步骤a中指定的扬声器阵列的划分方式相匹配的子扬声器阵列的控制参数；
(3)、信号处理器323更新各子扬声器阵列的控制参数，启动子扬声器阵列进入正常工作状态。
波束控制模块32根据用户输入的听者人数和所需要播放的声道数，建立与用户需求相匹配的重放声场。波束控制模块32根据所生成的波束数量对各扬声器单元进行划分。
参照附图6、附图7所示，在单波束输出情况下，波束控制模块32仅选择扬声器阵列34中的部分扬声器单元340组成一个子扬声器阵列。由这单个子扬声器阵列产生单个波束，形成单通道的声场重建。
参照附图8、附图9所示，在双波束输出情况下，波束控制模块32可以选择扬声器阵列34中的部分扬声器单元340组成两个子扬声器阵列。由这两个子扬声器阵列产生两个波束，在两个波束的交叉区域形成立体声效的声场重建。
参照附图10、附图11所示，在五波束输出情况下，波束控制模块32可以选择扬声器阵列34的扬声器单元340分别组成五个子扬声器阵列，将扬声器阵列34划分为五个子扬声器阵列。由这五个子扬声器阵列产生五个波束，在五个波束的交叉区域形成具有5.1环绕声效的声场重建。
参照附图12、附图13所示，在七波束输出情况下，波束控制模块32可以选择扬声器阵列34的扬声器单元340分别组成七个子扬声器阵列，将扬声器阵列34划分为七个子扬声器阵列。由这七个子扬声器阵列产生七个波束，在七个波束的交叉区域形成具有7.1环绕声效的声场重建。
在听者人数增加的情况下，发声模块的扬声器单元340的数量也需要相应增加，波束控制模块32也会对扬声器阵列34进行更为复杂的子扬声器阵列划分，从而才能形成更多的波束交叉区域，满足更多听者的视听需求。
参照附图14所示，用户定制声场的信息为：听者人数为2，两个听者左右对坐，期望的声道数为5。在波束控制模块32获取用户输入的这些声场信息后，查询存储器321内部与用户定制的声场信息相匹配的扬声器阵列划分方式；完成查询后，按照这一指定的扬声器阵列划分方式和用户定制声场信息，查询相匹配的各子扬声器阵列的控制参数；完成控制参数查询后,将这些指定的各子扬声器阵列控制参数经过数据缓存器322读取到信号处理器323内部。
参照附图15至附图17所示，信号处理器323将扬声器阵列34划分为十个子扬声器阵列，对应于座位一有五个子扬声器阵列，对应于座位二有五个子扬声器阵列。对应于座位一的五个子扬声器阵列，根据这五个子扬声器阵列的波束控制参数，产生相应的五个波束，该五个波束在座位一处产生交叉区域，形成五个声道的环绕声效果。同样，对应于座位二的五个子扬声器阵列也在座位二处产生波束交叉区域，也形成五个声道的环绕声效果。
扬声器阵列34需要根据实际应用需求，选择扬声器单元进行组阵。扬声器阵列可以包括低音单元、中音单元、高音单元。扬声器阵列34的形状和扬声器单元的数量根据实际需求进行设置。在公共场合使用该吊顶式音响时，考虑到重低音单元所带来的生扩散效果，扬声器阵列不包括重低音单元。如果在有重低音需求的情况下，如多媒体家庭影院、游戏厅等，可以考虑在扬声器阵列中央安装重低音单元或者另外配置低音炮。而当不需要重低音单元发声时，可以通过控制器2将其关闭；在需要重低音单元发生时，将其开启正常工作。
该基于波束控制的吊顶式音响装置的操作方法如下：
a、通过控制器将音频产品与发声模块配对；
b、配对成功后，音频产品将待播放的声源文件传输到发声模块的无线模块；
c、用户将期望信息录入到控制器中并确认提交，控制器上传用户期望信息到发声模块的波束控制模块内；
d、根据无线模块接收到的无线数据与通过控制器接收到的用户的期望信息，控制器的信号处理器在存储器中查询并指定与用户期望信息相匹配的子扬声器阵列的划分方式；
e、基于用户期望信息和子扬声器阵列的划分方式，信号处理器再次从存储器中查询并指定与步骤d中指定的子扬声器阵列的划分方式相匹配的子扬声器阵列的控制参数；
f、信号处理器更新各子扬声器阵列的控制参数，功放模块驱动子扬声器阵列发声。
上述实施例只为说明本发明的技术构思及特点，是一种优选的实施例，其目的在于让熟悉此项技术的人士能够了解本发明的内容并据以实施，并不能以此限制本发明的保护范围。凡根据本发明的精神实质所作的等效变化或修饰，都应涵盖在本发明的保护范围之内。

Claims (10)

1．一种基于波束控制的吊顶式音响装置，其特征在于，所述的吊顶式音响装置包括：
一音频产品，其具有第一端以及第二端；
一控制器，其与音频产品的第一端相交互连接，当音频产品发出指令信息后，控制器完成一发声模块与音频产品的配对，所述控制器还能够接收或生成用户期望的信息；
一发声模块，其包括：
一扬声器阵列，其包括多个扬声器单元，每个扬声器单元用于实现电声转换；以及
一无线模块，其与所述音频产品的第二端相交互连接，用于接收由所述音频产品发出的无线数据；
一波束控制模块，与所述控制器和所述无线模块相电连，其对无线模块接收到的无线数据与控制器接收到的用户期望的信息进行处理，生成与用户期望的信息相匹配的波束方向图；
功放模块，其输入端与所述波束控制模块的输出端相连接，波束控制模块根据波束方向图对功放模块进行调节，所述功放模块的输出端与所述扬声器阵列相电连，功放模块在波束控制模块的控制下驱动所述扬声器阵列中的各扬声器单元。
2．根据权利要求1所述的基于波束控制的吊顶式音响装置，其特征在于：音频产品为掌上电脑、智能手机、数字摄像机、电子图书阅读器、声频播放器、视频播放器中的一种。
3．根据权利要求1所述的基于波束控制的吊顶式音响装置，其特征在于：控制器包括输入装置、响应装置及微处理器，所述输入装置用于输入配对指令、听者人数及声道数，所述响应装置用于提示用户输入的命令是否成功响应，所述微处理器用于应答用户输入的指令。
4．根据权利要求1所述的基于波束控制的吊顶式音响装置，其特征在于：无线模块为蓝牙模块。
5．根据权利要求1所述的基于波束控制的吊顶式音响装置，其特征在于：无线模块为wifi模块。
6．根据权利要求1所述的基于波束控制的吊顶式音响装置，其特征在于：波束控制模块包括存储器、数据缓存器及信号处理器，所述存储器用于存储扬声器阵列的划分类型和对应的各划分类型下的子扬声器阵列的控制参数，所述信号处理器用于搜索适配用户输入信息、更新各子扬声器阵列的控制参数、执行波束控制，所述数据缓存器用于缓存信号处理器从存储器调入的各种数据。
7．根据权利要求1所述的基于波束控制的吊顶式音响装置，其特征在于：扬声器阵列包括低音单元、中音单元、高音单元。
8．根据权利要求1所述的基于波束控制的吊顶式音响装置，其特征在于：扬声器阵列包括低音单元、中音单元、高音单元及重低音单元。
9．根据权利要求8所述的基于波束控制的吊顶式音响装置，其特征在于：重低音单元设置在扬声器阵列的中央。
10．一种根据权利要求1至9中任一项所述的基于波束控制的吊顶式音响装置的操作方法，其特征在于，包括如下步骤：
a、通过控制器将音频产品与发声模块配对；
b、配对成功后，音频产品将待播放的声源文件传输到发声模块的无线模块；
c、用户将期望信息录入到控制器中并确认提交，控制器上传用户期望信息到发声模块的波束控制模块内；d、根据无线模块接收到的无线数据与通过控制器接收到的用户期望的信息，控制器的信号处理器在存储器中查询并指定与用户期望信息相匹配的子扬声器阵列的划分方式；
e、基于用户期望信息和子扬声器阵列的划分方式，信号处理器再次从存储器中查询并指定与步骤d中指定的子扬声器阵列的划分方式相匹配的子扬声器阵列的控制参数；
f、信号处理器更新各子扬声器阵列的控制参数，功放模块驱动子扬声器阵列发声。
PCT/CN2013/084636 2013-03-29 2013-09-29 基于波束控制的吊顶式音响装置 WO2014153938A1 (zh)

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