WO2014153943A1 - 车内声场均衡装置 - Google Patents

车内声场均衡装置 Download PDF

Info

Publication number
WO2014153943A1
WO2014153943A1 PCT/CN2013/084782 CN2013084782W WO2014153943A1 WO 2014153943 A1 WO2014153943 A1 WO 2014153943A1 CN 2013084782 W CN2013084782 W CN 2013084782W WO 2014153943 A1 WO2014153943 A1 WO 2014153943A1
Authority
WO
WIPO (PCT)
Prior art keywords
sound field
microphone
processor
equalization
unit
Prior art date
Application number
PCT/CN2013/084782
Other languages
English (en)
French (fr)
Inventor
马登永
Original Assignee
苏州上声电子有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 苏州上声电子有限公司 filed Critical 苏州上声电子有限公司
Publication of WO2014153943A1 publication Critical patent/WO2014153943A1/zh

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04S—STEREOPHONIC SYSTEMS 
    • H04S7/00—Indicating arrangements; Control arrangements, e.g. balance control
    • H04S7/30—Control circuits for electronic adaptation of the sound field
    • H04S7/301—Automatic calibration of stereophonic sound system, e.g. with test microphone
    • 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
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/227—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only  using transducers reproducing the same frequency band
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/13—Acoustic transducers and sound field adaptation in vehicles
    • 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
    • H04R3/005—Circuits for transducers, loudspeakers or microphones for combining the signals of two or more microphones
    • 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

Definitions

  • the object of the present invention is to overcome the existing room sound field automatic equalization algorithm and the defects of the product in the case where the reflected sound is dominant and the number of speaker channels is large, and an intelligent sound suitable for the in-vehicle sound reproduction environment is provided.
  • the sound field equalization device in the car is to overcome the existing room sound field automatic equalization algorithm and the defects of the product in the case where the reflected sound is dominant and the number of speaker channels is large, and an intelligent sound suitable for the in-vehicle sound reproduction environment.
  • the technical solution adopted by the present invention is:
  • a sound field equalization device in a vehicle comprising:
  • the speaker array includes a plurality of speaker units disposed at a plurality of position points in the vehicle, the speaker unit being configured to emit acoustic information to the interior space of the vehicle;
  • a microphone array comprising at least one microphone unit, the microphone unit being disposed in an area to be equalized for picking up sound field information formed by superposition of the plurality of speaker units and converting the sound field information into an electrical signal;
  • a sound field equalization processor having an input end corresponding to an output end of the microphone unit for processing and calculating an electrical signal output by the microphone to obtain an optimal equalization processor parameter of any one of the speaker units;
  • a multi-channel power amplifier having an input coupled to an output of the sound field equalization processor, an output of the multi-channel power amplifier being coupled to the speaker array, the multi-channel power amplifier being The optimal equalization processor parameters drive the plurality of speaker units for electroacoustic conversion.
  • the number of microphone units is one
  • the interior space has a plurality of areas to be equalized, and in each area to be equalized, the microphone unit is detachably coupled to the vehicle.
  • the microphone unit is a wired microphone.
  • the microphone unit is a wireless microphone.
  • the placement of the microphone unit is on either side of the interior seat.
  • the plurality of microphone units are plural, and the plurality of microphone units constitute an array of microphones.
  • the plurality of microphones are disposed on either side of the in-vehicle seat.
  • the microphone unit is a wired microphone unit
  • the wired microphone unit includes a microphone, a signal transmission cable, and a microphone driver.
  • the sound field equalization processor includes an analog input interface, an analog to digital converter, a data buffer, a second digital signal processor, an input device, and a parameter download interface, the analog input interface Inputting an electrical signal picked up by the microphone array into the sound field equalization processor, the input device for inputting a value desired by a user, the second digital signal processor for combining a user inputting a desired value with the An equalization processor parameter of each speaker unit is obtained by an electrical signal picked up by each of the microphone units, the data buffer is configured to buffer an input value, and the parameter download interface is configured to download the calculated equalization processor parameter to the plurality of Inside the channel power amplifier.
  • the microphone unit is a wireless microphone unit
  • the wireless microphone unit includes a microphone, a signal transmission cable, a microphone driver, a data buffer, a data processor, a wireless transceiver, and a power supply module.
  • the microphone, the signal transmission cable, and the microphone driver are used for picking up sound field information of the area to be equalized, and the data buffer is used for buffering the collected sound field information, and the data processor is used for processing the sound field information, adjusting the encoding format, and compressing the data.
  • the wireless transceiver includes a modem, a data buffer, a digital-to-analog, and an analog-to-digital converter, and the wireless transceiver is configured to upload sound field information to the sound field equalization processor, receive a control instruction issued by the sound field equalization processor, The wireless microphone driver is notified to pick up sound field information, and the power supply module is configured to provide power.
  • the sound field equalization processor includes a digital input interface, a data buffer, a second digital signal processor, an input device, and a parameter download interface, the digital input interface for using the microphone An electrical signal picked up by the array is input to the sound field equalization processor, the data buffer is for buffering of input values, the input device is for inputting a value desired by a user, and the second digital signal processor is for combining user input Calculating equalization processor parameters of each speaker unit by using a desired value and an electrical signal picked up by each of the microphone units, the parameter download interface for downloading the calculated equalization processor parameters to the multi-channel Inside the power amplifier.
  • the multi-channel power amplifier includes a parameter download port, a first digital signal processor, a power amplifier, and a digital to analog converter, the first digital signal processor responsive to the sound field equalization Optimizing equalization processor parameters of the respective speaker unit channels input by the processor, and performing optimal equalization processing on the channels of the speaker units, wherein the parameter download port is used to input the calculated equalization processor parameters to
  • the first digital signal processor is configured to convert a digital signal into an analog signal and output the signal to the power amplifier, the power amplifier for power amplification of the signal, and driving the speaker unit to emit sound.
  • the speaker array includes a woofer, a midrange unit, a tweeter, and a subwoofer.
  • the intelligent equalization device of the sound field in the vehicle can automatically complete the sound field equalization task of each desired position in the vehicle, and store the equalizer parameters corresponding to the respective speaker channels, by loading the equalization processor parameters to Inside the digital signal processor of the multi-channel power amplifier, the equalization task of the sound field in the vehicle can be conveniently performed.
  • the intelligent equalization device of the sound field in the vehicle can automatically complete the sound field equalization task of each desired position in the vehicle, and store the equalizer parameters corresponding to the respective speaker channels, by loading the equalization processor parameters to Inside the digital signal processor of the multi-channel power amplifier, the equalization task of the sound field in the vehicle can be conveniently performed.
  • This kind of automatic and intelligent in-vehicle sound field equalization technology simplifies the debugging task of the sound field in the car, shortens the debugging time, saves many repeated tests and listening work, and facilitates the debugging of the sound field in the car;
  • the sound field equalization device in the car Due to the development and design of the sound reproduction environment in which the reflected sound of the car is the main component and the practical operation of multiple speaker channels, the sound field equalization device in the car has the best in the automatic equalization process of the sound field in the car. The sound field equalization effect.
  • Embodiment 1 is a flow chart of signal processing according to Embodiment 1 of the present invention.
  • Embodiment 1 of the present invention is a schematic diagram of Embodiment 1 of the present invention.
  • FIG. 3 is a block diagram showing the structure of a microphone unit according to Embodiment 1 of the present invention.
  • FIG. 4 is a block diagram showing the internal structure of a sound field equalization processor according to Embodiment 1 of the present invention.
  • FIG. 5 is a block diagram showing the internal structure of a multi-channel power amplifier according to Embodiment 1 of the present invention.
  • FIG. 6 is a flow chart showing the steps of using the in-vehicle sound field equalization device of the present invention.
  • FIG. 7 is a block diagram showing the structure of a microphone unit according to Embodiment 2 of the present invention.
  • FIG. 8 is a block diagram showing the internal structure of a sound field equalization processor according to Embodiment 2 of the present invention.
  • speaker array 40, woofer; 41, midrange unit; 42, tweeter; 43, subwoofer;
  • an in-vehicle sound field equalization apparatus includes:
  • the speaker array 4 includes a plurality of speaker units disposed at a plurality of position points in the vehicle, the speaker unit being configured to emit acoustic information to the interior space of the vehicle;
  • the microphone array 1 includes at least one microphone unit 10, and the vehicle has a plurality of areas to be equalized.
  • the area to be equalized is generally an area that the listener may have in the vehicle, and the microphone unit 10 is disposed in the area to be equalized for picking up. Sound field information formed by superimposing the plurality of speaker units and converting the sound field information into an electrical signal;
  • a sound field equalization processor 2 having an input terminal corresponding to an output end of the microphone unit 10 for processing and calculating an electrical signal outputted by the microphone array 1 to obtain an optimal balance of any one of the speaker units Processor parameter
  • the multi-channel power amplifier 3 has an input terminal connected to an output end of the sound field equalization processor 2, and an output end connected to the speaker array 4 for driving the plurality of speaker units for electroacoustic conversion.
  • the microphone array 1 comprises eight microphone units 10, which are wireless microphone units, with two microphone units 10 placed on each side of the top of each seat 5, each microphone unit 11 being used for each
  • the sound field information at the position corresponding to both ears of the listener is picked up on both sides of the seat 5.
  • the speaker array 4 includes two woofers 40, one midrange unit 41, two tweeters 42 and two subwoofers 43.
  • the sound field equalization processor 2 has eight inputs that are connected to the outputs of the eight microphone units 10.
  • the microphone unit 10 includes a microphone 11, a signal transmission cable 12, a microphone driver 13, a data buffer 14, a data processor 15, a wireless transceiver 16, and a power supply module 17, the microphone 11,
  • the signal transmission cable 12 and the microphone driver 13 are used for picking up sound field information at a point of desired equalization position
  • the data buffer 14 is for buffering and storing the picked sound field information
  • the data processor 15 is for processing the sound field information and adjusting Encoding format, compressed data
  • the wireless transceiver 16 includes a modem, a data buffer, a digital to analog, and an analog to digital converter
  • the wireless transceiver 16 for transmitting sound field data to the sound field equalization processor 2, receiving the The sound field equalization processor 2 issues a control command to notify the microphone driver 13 to pick up sound field information
  • the power supply module 17 is configured to supply power to each of the modules.
  • the sound field equalization processor 2 includes a digital input interface 20, a data buffer 21, a second digital signal processor 23, an input device 22, and a parameter download interface 24, which is used for the digital input interface 20
  • the sound field information picked up by the microphone array 1 is input to the data buffer 21, and the data buffer 21 is used for inputting a buffer of data.
  • the input device 22 is a keyboard or a touch screen for inputting a frequency desired by the user.
  • the impulse response curve is equivalent, the second digital signal processor 23 is configured to determine an equalization processor parameter on each speaker unit channel in combination with a user input desired value and a value measured by the microphone array 1.
  • the parameter download interface 24 is for downloading the calculated equalization processor parameters into the multi-channel power amplifier 3.
  • the optimized equalization processor parameter design is performed by the intelligent sound field equalization algorithm, and the optimized equalization processing corresponding to each speaker unit is calculated. Parameters.
  • the intelligent sound field equalization algorithm first analyzes the time domain and the frequency domain of the sound field information of the location of each microphone unit, and obtains the actual time domain impulse response and frequency domain response characteristics at each desired position; The time domain impulse response and the frequency domain response characteristic of each predetermined position point are preset, and an optimized response fitting algorithm is used to calculate that the desired position point needs to be applied to the user's predetermined time domain impulse response and frequency domain response characteristics. Optimize equalization of processor parameters for each speaker unit.
  • the multi-channel power amplifier 3 includes a parameter download port 30, a first digital signal processor 31, a power amplifier 33, and a digital-to-analog converter, and the parameter download port 30 is used to download the sound field.
  • the first digital signal processor 31 is configured to complete the most equal channel parameters of the speaker units in response to the optimal equalization processor parameters of the speaker units input by the sound field equalization processor 2
  • the digital-to-analog converter 32 is simply referred to as a DAC for converting a digital signal into an analog signal and outputting it to the power amplifier 33, the power amplifier 33 for power amplification of the signal, driving the speaker load to sound .
  • Each of the power amplifier 33 channels can drive a single of the speaker units, as well as a plurality of the speaker units.
  • the sound field equalization processor 2 sends a pickup instruction to each of the microphone units 10, informing each of the microphone units 10 to complete the sound field information collection, data entry and processing operations, and after the microphone unit 10 completes the data acquisition, the data is acquired. Uploaded to the sound field equalization processor 2;
  • the sound field equalization processor 2 performs the optimized equalization processor parameter design according to the user-specified expected curve and the response data uploaded by the microphone according to the intelligent in-vehicle sound field equalization algorithm;
  • the parameter download interface 24 and the parameter download port 30 between the sound field equalization processor 2 and the multi-channel power amplifier 3 are connected, and the equalization processor parameters corresponding to the channels of the respective speaker units are calculated by the sound field equalization processor 2 through the user interface. Downloaded into the ROM unit of the first digital signal processor 31 inside the multi-channel power amplifier 3, the first digital signal processor 31 inside the multi-channel power amplifier 3 will update the equalization processor parameters of each channel to complete each speaker. The response of the channel is balanced.
  • the microphone array 1 is removed and the sound field equalization processor 2 is turned off, and the multi-channel power amplifier 3 is mounted to a designated position to complete intelligent equalization processing of the sound field in the vehicle.
  • the intelligent equalization device of the sound field in the car relieves the heavy test and listening work of the tuning engineer through the automation and intelligent sound field equalization processing, which makes the balance of the sound field in the car simple and fast, and shortens the debugging time.
  • the sound field balance in the car provides great convenience.
  • Figure 7 and Figure 8 show another embodiment of the present invention.
  • the microphone array 1 is a wired microphone array composed of a plurality of wired microphone units
  • the microphone unit 10 is a wired microphone unit.
  • the wired microphone unit is simple to implement, and mainly includes a microphone 11, a signal transmission cable 12, and a microphone driver 13.
  • the sound field equalization processor 2 includes an analog input interface 25 of a wired microphone array, an analog to digital converter 26, a data buffer 21, a second digital signal processor 23, an input device 22, and a parameter download interface.
  • the input device 22 is used to input a frequency response and an impulse response curve desired by the user
  • the second digital signal processor 23 is configured to combine the expected curve input by the user with the curve measured by the microphone array 1 to obtain Equalization processor parameters on each speaker channel
  • the data buffer 21 is used for buffering of input data
  • the parameter download interface 24 is for downloading the calculated equalization processor parameters into the multi-channel power amplifier 3 .
  • the microphone array 1 may also be a virtual microphone unit formed by sequentially changing the placement position of the single microphone unit.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Circuit For Audible Band Transducer (AREA)

Abstract

一种车内声场的智能化均衡装置，包括：扬声器阵列（4），包括设置在车内多个位置点处的多个扬声器单元，所述扬声器单元用于向车内空间发出声信息；传声器阵列（1），包括至少一个传声器单元（10），所述传声器单元（10）设置在待均衡区域内，用于拾取由所述多个扬声器单元叠加形成的声场信息并将声场信息转化为电信号；声场均衡处理器（2），其具有与所述传声器单元（10）的输出端相对应连接的输入端，用于求取任一个扬声器单元的最优均衡处理器参数；多声道功率放大器（3），其输入端与所述声场均衡处理器（2）的输出端相连接，所述多声道功率放大器（3）的输出端与所述扬声器阵列（4）相连接，所述多声道功率放大器（3）驱动所述多个扬声器单元（10）进行电声转换。

Description

车内声场均衡装置
发明内容
针对上述问题，本发明的目的是克服现有房间声场自动均衡算法及产品在反射声占主导并且扬声器通道数较多情况下所存在的缺陷，提供一种适合于车内声重放环境的智能化的车内声场均衡装置。
为解决上述技术问题，本发明采用的技术方案为：
一种车内声场均衡装置，包括：
扬声器阵列，包括设置在车内多个位置点处的多个扬声器单元，所述扬声器单元用于向车内空间发出声信息；
传声器阵列，包括至少一个传声器单元，所述传声器单元设置在待均衡区域内，用于拾取由所述多个扬声器单元叠加形成的声场信息并将声场信息转化为电信号；
声场均衡处理器，其具有与所述传声器单元的输出端相对应连接的输入端，用于对所述传声器输出的电信号进行处理计算，求取任一个扬声器单元的最优均衡处理器参数；
多声道功率放大器，其输入端与所述声场均衡处理器的输出端相连接，所述多声道功率放大器的输出端与所述扬声器阵列相连接，所述多声道功率放大器根据求解出的最优均衡处理器参数驱动所述多个扬声器单元进行电声转换。
在某些特定的实施例中，所述传声器单元的数量为一个，该车内空间具有多个待均衡区域，在每个待均衡区域内，所述传声器单元与车可拆卸连接。
在某些优选的实施例中，所述传声器单元为有线传声器。
在某些优选的实施例中，所述传声器单元为无线传声器。
在某些优选的实施例中，所述传声器单元的布放位置为车内座椅的两侧。
在某些特定的实施例中，所述传声器单元为多个，所述多个传声器单元构成传声器阵列。
在某些优选的实施例中，所述多个传声器设置在车内座椅的两侧。
在某些优选的实施例中，所述传声器单元为有线传声器单元，所述有线传声器单元包括传声器、信号传输线缆和传声器驱动器。
在某些更优选的实施例中，所述声场均衡处理器包括模拟输入接口、模数转换器、数据缓冲器、第二数字信号处理器、输入设备和参数下载接口，所述模拟输入接口用于将所述传声器阵列拾取的电信号输入到所述声场均衡处理器中，所述输入设备用于输入用户期望的值，所述第二数字信号处理器用于结合用户输入期望的值和所述各传声器单元所拾取的电信号，求取各扬声器单元的均衡处理器参数，所述数据缓冲器用于缓存输入值，所述参数下载接口用于将计算好的均衡处理器参数下载到所述多声道功率放大器内。
在某些优选的实施例中，所述传声器单元为无线传声器单元，所述无线传声器单元包括传声器、信号传输线缆、传声器驱动器、数据缓存器、数据处理器、无线收发器和供电模块，所述传声器、信号传输线缆、传声器驱动器用于拾取待均衡区域的声场信息，所述数据缓存器用于缓冲存储所拾取的声场信息，所述数据处理器用于处理声场信息、调整编码格式、压缩数据，所述无线收发器包括调制解调器、数据缓冲器、数模和模数转换器，所述无线收发器用于向所述声场均衡处理器上传声场信息、接收所述声场均衡处理器下达的控制指令、通知所述无线传声器驱动器拾取声场信息，所述供电模块用于提供电源。
在某些更优选的实施例中，所述声场均衡处理器包括数字输入接口、数据缓冲器、第二数字信号处理器、输入设备和参数下载接口，所述数字输入接口用于将所述传声器阵列拾取的电信号输入到所述声场均衡处理器中，所述数据缓冲器用于输入值的缓存，所述输入设备用于输入用户期望的值，所述第二数字信号处理器用于结合用户输入期望的值和所述各传声器单元所拾取的电信号，求取各扬声器单元的均衡处理器参数，所述参数下载接口用于将计算好的均衡处理器参数下载到所述所述多声道功率放大器内。
在某些特定的实施例中，所述多声道功率放大器包括参数下载端口、第一数字信号处理器、功率放大器、数模转换器，所述第一数字信号处理器用于响应所述声场均衡处理器所输入的所述各扬声器单元通道的最优均衡处理器参数，完成对所述各扬声器单元通道的最优化均衡处理，所述参数下载端口用于将计算好的均衡处理器参数输入到所述第一数字信号处理器上，所述数模转换器用于将数字信号转换为模拟信号，并输出给所述功率放大器，所述功率放大器用于信号的功率放大、驱动扬声器单元发声。
在某些特定的实施例中，所述扬声器阵列包括低音单元、中音单元、高音单元和重低音单元。
本发明采用以上技术方案，车内声场的智能化均衡装置,能够自动完成车内各期望位置点的声场均衡任务,并存储对应于各扬声器通道的均衡器参数,通过加载这些均衡处理器参数到多声道功率放大器的数字信号处理器内部,就可以方便的完成车内声场的均衡任务。相比现有技术具有如下优点：
1、这种自动化和智能化的车内声场均衡技术，简化了车内声场的调试任务，缩短了调试时间，省去了多次反复的测试及听音工作，方便了车内声场的调试；
2、由于针对车内反射声占主要成份的声重放环境和多个扬声器通道同时工作的实用情况进行开发设计，因此车内声场均衡装置，在车内声场的自动均衡过程中，具有最优的声场均衡效果。
附图说明
图1为本发明实施例一的信号处理流程图；
图2为本发明实施例一的示意图；
图3为本发明实施例一的传声器单元的组成结构框图；
图4本发明实施例一的声场均衡处理器的内部组成结构框图；
图5为本发明实施一的多声道功率放大器的内部组成结构框图；
图6为本发明的车内声场均衡装置的使用步骤流程图；
图7为本发明实施例二的传声器单元的组成结构框图；
图8为本发明实施例二的声场均衡处理器的内部组成结构框图。
其中：1、传声器阵列；10、传声器单元；11、传声器；12、信号传输线缆；13、传声器驱动器；14、数据缓存器；15、数据处理器；16、无线收发器；17、供电模块；
2、声场均衡处理器；20、数字输入接口；21、数据缓冲器；22、输入设备；23、第二数字信号处理器；24、参数下载接口；25、模拟输入接口；26、ADC；
3、多声道功率放大器；30、参数下载端口；31、第一数字信号处理器；32、DAC；33、功率放大器；
4、扬声器阵列；40、低音单元；41、中音单元；42、高音单元；43、重低音单元；
8、座椅。
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，从而对本发明的保护范围作出更为清楚明确的界定。
实施例1
参照附图1所示，一种车内声场均衡装置，包括：
扬声器阵列4，包括设置在车内多个位置点处的多个扬声器单元，所述扬声器单元用于向车内空间发出声信息；
传声器阵列1，包括至少一个传声器单元10，车内具有多个待均衡区域，待均衡区域一般为听者在车内可能存在的区域，所述传声器单元10设置在待均衡区域内，用于拾取由所述多个扬声器单元叠加形成的声场信息并将声场信息转化为电信号；
声场均衡处理器2，其具有与所述传声器单元10的输出端相对应连接的输入端，用于对所述传声器阵列1输出的电信号进行处理计算，求取任一个扬声器单元的最优均衡处理器参数；
多声道功率放大器3，其输入端与所述声场均衡处理器2的输出端连接，其输出端与所述扬声器阵列4相连接，用于驱动所述多个扬声器单元进行电声转换。
参照附图2所示，传声器阵列1包括八个传声器单元10，所述传声器单元10为无线传声器单元，每个座椅5的顶部两侧分别放置两个传声器单元10，各传声器单元11用于拾取座椅5两侧与听者双耳相对应位置处的声场信息。所述扬声器阵列4包括两个低音单元40、一个中音单元41、两个高音单元42和两个重低音单元43。所述声场均衡处理器2具有八个与所述八个传声器单元10的输出端相对应连接的输入端。
参照附图3所示，所述传声器单元10包括传声器11、信号传输线缆12、传声器驱动器13、数据缓存器14、数据处理器15、无线收发器16和供电模块17，所述传声器11、信号传输线缆12、传声器驱动器13用于拾取期望均衡位置点处的声场信息，所述数据缓存器14用于缓冲存储所拾取的声场信息，所述数据处理器15用于处理声场信息、调整编码格式、压缩数据，所述无线收发器16包括调制解调器、数据缓冲器、数模和模数转换器，所述无线收发器16用于向所述声场均衡处理器2上传声场数据、接收所述声场均衡处理器2下达的控制指令、通知所述传声器驱动器13拾取声场信息，所述供电模块17用于向上述各模块提供电源。
参照附图4所示，所述声场均衡处理器2包括数字输入接口20、数据缓冲器21、第二数字信号处理器23、输入设备22和参数下载接口24，所述数字输入接口20用于将传声器阵列1所拾取的声场信息输入给数据缓冲器21，所述数据缓冲器21用于输入数据的缓存，所述输入设备22为键盘，也可以为触摸屏，用于输入用户所期望的频响和脉冲响应曲线等值，所述第二数字信号处理器23用于结合用户输入期望的值和所述传声器阵列1测量的值，求取各扬声器单元通道上的均衡处理器参数，所述参数下载接口24用于将计算好的均衡处理器参数下载到所述多声道功率放大器3内。
结合传声器阵列1上传的车内各期望位置点的声场信息和用户期望的值，通过智能化的声场均衡算法进行最优化的均衡处理器参数设计，计算出对应于各扬声器单元的最优化均衡处理器参数。智能化的声场均衡算法，首先对各传声器单元上传的所在位置点声场信息进行时域和频域的分析，获得各期望位置点处的实际时域脉冲响应和频域响应特性；然后结合用户所预先设定的各期望位置点的时域脉冲响应和频域响应特性，通过最优化的响应拟合算法，计算出使得各期望位置点达到用户预定时域脉冲响应和频域响应特性所需要施加于各扬声器单元的最优化均衡处理器参数。
参照附图5所示，所述多声道功率放大器3包括参数下载端口30、第一数字信号处理器31、功率放大器33、数模转换器，所述参数下载端口30用于下载所述声场均衡处理器2传入的所述各扬声器单元通道的均衡处理器参数、更新所述各扬声器单元通道的均衡处理器参数，将已计算的最优均衡处理器参数输入到所述第一数字信号处理器31上，所述第一数字信号处理器31用于响应所述声场均衡处理器2所输入的所述各扬声器单元的最优均衡处理器参数，完成对所述各扬声器单元通道的最优化均衡处理，所述数模转换器32简称为DAC，用于将数字信号转换为模拟信号，并输出给所述功率放大器33，所述功率放大器33用于信号的功率放大、驱动扬声器负载发声。
所述每个功率放大器33通道可以驱动单个所述扬声器单元，也可以驱动多个所述扬声器单元。
参照附图6所示，车内声场均衡装置的使用步骤如下：
1. 将无线传声器阵列1布置到指定的位置，通常将各传声器单元10固定在各座椅的顶端两侧处，将多声道功率放大器3打开，保证其能够正常驱动扬声器阵列4；
2. 开启声场均衡处理器2，由用户通过触摸屏和键盘等输入设备22设定所期望的各位置点处的响应曲线；
3. 在期望曲线设置完成后，由声场均衡处理器2向各传声器单元10发送拾取指令，通知各传声器单元10完成声场信息的采集、数据录入及处理操作，在传声器单元10完成数据采集后，将数据上传给声场均衡处理器2；
4.声场均衡处理器2根据用户指定的期望曲线和传声器上传的响应数据，按照智能化车内声场均衡算法，完成最优化的均衡处理器参数设计；
5. 连接声场均衡处理器2和多声道功率放大器3之间的参数下载接口24和参数下载端口30，通过用户界面，将声场均衡处理器2计算的对应于各扬声器单元10通道的均衡处理器参数下载到多声道功率放大器3内部的第一数字信号处理器31的ROM单元内，多声道功率放大器3内部的第一数字信号处理器31将更新各通道的均衡处理器参数，完成各扬声器通道的响应均衡操作。
6. 移除传声器阵列1并关闭声场均衡处理器2，将多声道功率放大器3安装到指定位置，完成车内声场的智能化均衡处理。
车内声场的智能化均衡装置，通过自动化和智能化的声场均衡处理，解除了调音工程师繁重的测试和听音工作，使得车内声场的均衡工作变得简捷快速，缩短了调试时间，为车内声场均衡提供了非常可观的便利性。
实施例2
附图7、附图8所示为本发明的另一种实施例。与实施例一的不同之处在于：所述传声器阵列1为由多个有线传声器单元所组成的有线传声器阵列，传声器单元10为有线传声器单元。
参照附图7所示，有线传声器单元实现简单，主要包括传声器11、信号传输线缆12和传声器驱动器13三个部分组成。
参照附图8所示，所述声场均衡处理器2包括有线传声器阵列的模拟输入接口25、模数转换器26、数据缓冲器21、第二数字信号处理器23、输入设备22和参数下载接口24，所述输入设备22用于输入用户所期望的频响和脉冲响应曲线，所述第二数字信号处理器23用于结合用户输入的期望曲线和所述传声器阵列1测量的曲线，求取各扬声器通道上的均衡处理器参数，所述数据缓冲器21用于输入数据的缓存，所述参数下载接口24用于将计算好的均衡处理器参数下载到所述多声道功率放大器3内。
除上述两种实施例所记载的车内声场均衡装置外，所述传声器阵列1还可以为单个传声器单元通过依次改变布放位置所形成的虚拟传声器阵列。
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 (13)

1．一种车内声场均衡装置，其特征在于，包括：
扬声器阵列，包括设置在车内多个位置点处的多个扬声器单元，所述扬声器单元用于向车内空间发出声信息；
传声器阵列，包括至少一个传声器单元，所述传声器单元设置在待均衡区域内，用于拾取由所述多个扬声器单元叠加形成的声场信息并将声场信息转化为电信号；
声场均衡处理器，其具有与所述传声器单元的输出端相对应连接的输入端，用于结合所述传声器阵列输出的电信号给出任一个扬声器单元的最优均衡处理器参数；
多声道功率放大器，其输入端与所述声场均衡处理器的输出端相连接，所述多声道功率放大器的输出端与所述扬声器阵列相连接，所述多声道功率放大器根据给出的最优均衡处理器参数驱动所述多个扬声器单元进行电声转换。
2．根据权利要求1所述的车内声场均衡装置，其特征在于：所述传声器单元的数量为一个，该车内空间具有多个待均衡区域，在每个待均衡区域内，所述传声器单元与车可拆卸连接。
3．根据权利要求2所述的车内声场均衡装置，其特征在于：所述传声器单元为有线传声器。
4．根据权利要求2所述的车内声场均衡装置，其特征在于：所述传声器单元为无线传声器。
5．根据权利要求2所述的车内声场均衡装置，其特征在于：所述传声器单元的布放位置为车内座椅的两侧。
6．根据权利要求1所述的车内声场均衡装置，其特征在于：所述传声器单元为多个，所述多个传声器单元构成传声器阵列。
7．根据权利要求6所述的车内声场均衡装置，其特征在于：所述多个传声器设置在车内座椅的两侧。
8．根据权利要求6所述的车内声场均衡装置，其特征在于：所述传声器单元为有线传声器单元，所述有线传声器单元包括传声器、信号传输线缆和传声器驱动器。
9．根据权利要求8所述的车内声场均衡装置，其特征在于：所述声场均衡处理器包括模拟输入接口、模数转换器、数据缓冲器、第二数字信号处理器、输入设备和参数下载接口，所述模拟输入接口用于将所述传声器阵列拾取的电信号输入到所述声场均衡处理器中，所述输入设备用于输入用户期望的值，所述第二数字信号处理器用于结合用户输入期望的值和所述各传声器单元所拾取的电信号，给出扬声器单元的均衡处理器参数，所述数据缓冲器用于缓存输入值，所述参数下载接口用于将均衡处理器参数下载到所述多声道功率放大器内。
10．根据权利要求6所述的车内声场均衡装置，其特征在于：所述传声器单元为无线传声器单元，所述无线传声器单元包括传声器、信号传输线缆、传声器驱动器、数据缓存器、数据处理器、无线收发器和供电模块，所述传声器、信号传输线缆、传声器驱动器用于拾取待均衡区域的声场信息，所述数据缓存器用于缓冲存储所拾取的声场信息，所述数据处理器用于处理声场信息，所述无线收发器包括调制解调器、数据缓冲器、数模和模数转换器，所述无线收发器用于向所述声场均衡处理器上传声场信息、接收所述声场均衡处理器下达的控制指令、通知所述无线传声器驱动器拾取声场信息，所述供电模块用于提供电源。
11．根据权利要求10所述的车内声场均衡装置，其特征在于：所述声场均衡处理器包括数字输入接口、数据缓冲器、第二数字信号处理器、输入设备和参数下载接口，所述数字输入接口用于将所述传声器阵列拾取的电信号输入到所述声场均衡处理器中，所述数据缓冲器用于输入值的缓存，所述输入设备用于输入用户期望的值，所述第二数字信号处理器用于结合用户输入期望的值和所述各传声器单元所拾取的电信号，给出各扬声器单元的均衡处理器参数，所述参数下载接口用于均衡处理器参数下载到所述多声道功率放大器内。
12．根据权利要求1所述的车内声场均衡装置，其特征在于：所述多声道功率放大器包括参数下载端口、第一数字信号处理器、功率放大器、数模转换器，所述第一数字信号处理器用于响应所述声场均衡处理器所输入的所述各扬声器单元通道的均衡处理器参数，完成对所述各扬声器单元通道的最优化均衡处理，所述参数下载端口用于将计算好的均衡处理器参数输入到所述第一数字信号处理器上，所述数模转换器用于将数字信号转换为模拟信号，并输出给所述功率放大器，所述功率放大器用于信号的功率放大、驱动扬声器单元发声。
13．根据权利要求1所述车内声场均衡装置，其特征在于，所述扬声器阵列包括低音单元、中音单元、高音单元和重低音单元。
PCT/CN2013/084782 2013-03-29 2013-09-30 车内声场均衡装置 WO2014153943A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201310106476.9 2013-03-29
CN201310106476.9A CN103220597B (zh) 2013-03-29 2013-03-29 车内声场均衡装置

Publications (1)

Publication Number Publication Date
WO2014153943A1 true WO2014153943A1 (zh) 2014-10-02

Family

ID=48817986

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2013/084782 WO2014153943A1 (zh) 2013-03-29 2013-09-30 车内声场均衡装置

Country Status (2)

Country Link
CN (1) CN103220597B (zh)
WO (1) WO2014153943A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113596705A (zh) * 2021-06-30 2021-11-02 华为技术有限公司 一种发声装置的控制方法、发声系统以及车辆

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103220597B (zh) * 2013-03-29 2014-07-23 苏州上声电子有限公司 车内声场均衡装置
CN104581498B (zh) * 2013-10-22 2018-01-12 菁音电子科技（上海）有限公司 模拟目标音箱放音效果的方法及系统
CN106454616B (zh) * 2016-08-29 2019-10-08 陈立康 全息立体音响系统
CN106231503B (zh) * 2016-09-19 2018-05-29 清华大学 一种用于车内分区域控制的音频系统及控制方法
CN107396274A (zh) * 2017-07-07 2017-11-24 广州飞达音响股份有限公司 有源线阵音响声场调校的方法、装置及系统
CN109803218B (zh) * 2019-01-22 2020-12-11 北京雷石天地电子技术有限公司 扬声器声场均衡自动校准方法及装置
CN111628838B (zh) * 2019-02-28 2021-06-08 中国科学院声学研究所 一种分布式应急广播的声场均匀化方法
CN112235691B (zh) * 2020-10-14 2022-09-16 南京南大电子智慧型服务机器人研究院有限公司 一种混合式的小空间声重放品质提升方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4888808A (en) * 1987-03-23 1989-12-19 Matsushita Electric Industrial Co., Ltd. Digital equalizer apparatus enabling separate phase and amplitude characteristic modification
CN201995115U (zh) * 2011-01-28 2011-09-28 比亚迪股份有限公司 一种车内降噪系统
CN102883243A (zh) * 2012-10-15 2013-01-16 苏州上声电子有限公司 在线迭代的声重放系统频响均衡方法和装置
CN103220597A (zh) * 2013-03-29 2013-07-24 苏州上声电子有限公司 车内声场均衡装置
CN203167229U (zh) * 2013-03-29 2013-08-28 苏州上声电子有限公司 车内声场均衡装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1843635B1 (en) * 2006-04-05 2010-12-08 Harman Becker Automotive Systems GmbH Method for automatically equalizing a sound system
JP5535325B2 (ja) * 2009-10-05 2014-07-02 ハーマン インターナショナル インダストリーズ インコーポレイテッド オーディオチャネル補償を有するマルチチャネルオーディオシステム

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4888808A (en) * 1987-03-23 1989-12-19 Matsushita Electric Industrial Co., Ltd. Digital equalizer apparatus enabling separate phase and amplitude characteristic modification
CN201995115U (zh) * 2011-01-28 2011-09-28 比亚迪股份有限公司 一种车内降噪系统
CN102883243A (zh) * 2012-10-15 2013-01-16 苏州上声电子有限公司 在线迭代的声重放系统频响均衡方法和装置
CN103220597A (zh) * 2013-03-29 2013-07-24 苏州上声电子有限公司 车内声场均衡装置
CN203167229U (zh) * 2013-03-29 2013-08-28 苏州上声电子有限公司 车内声场均衡装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113596705A (zh) * 2021-06-30 2021-11-02 华为技术有限公司 一种发声装置的控制方法、发声系统以及车辆
CN113596705B (zh) * 2021-06-30 2023-05-16 华为技术有限公司 一种发声装置的控制方法、发声系统以及车辆

Also Published As

Publication number Publication date
CN103220597A (zh) 2013-07-24
CN103220597B (zh) 2014-07-23

Similar Documents

Publication Publication Date Title
WO2014153943A1 (zh) 车内声场均衡装置
KR102266080B1 (ko) 주파수 의존 측음 교정
US10013965B2 (en) Calibration system for active noise cancellation and speaker apparatus
KR101365388B1 (ko) 효율 최적화된 오디오 시스템
US9432761B2 (en) Signal processor
US9318096B2 (en) Method and system for active noise cancellation based on remote noise measurement and supersonic transport
CN110073676A (zh) 用于主动噪声消去音频设备的终端用户调谐的方法和系统
TWI822662B (zh) 耳機充電器節點
CN108391196B (zh) 一种音频信号处理装置及音箱
CN101449595A (zh) 声压监视器
CN113711303A (zh) 用于调谐支持噪声消除的音频系统的方法和支持噪声消除的音频系统
KR102374789B1 (ko) 차지 펌프 잡음을 감소시키기 위한 신호 경로의 잡음 전달 함수의 제어
CN108156546A (zh) 主动降噪校正系统与扬声装置
US20180322859A1 (en) Realisation of controller transfer function for active noise cancellation
US20230171539A1 (en) Audio output device, method for eliminating sound leakage, and storage medium (as amended)
US10558424B1 (en) Speaker device with equalization control
CN205142478U (zh) 一种多功能功放系统
US10356519B2 (en) Audio monitor signal interception device
WO2020040541A1 (ko) 전자장치, 그 제어방법 및 기록매체
KR101623562B1 (ko) 분리형 마이크모듈을 구비한 휴대형 음향 증폭 장치
JP6737597B2 (ja) オーディオ用のデジタル信号処理装置ならびにそれを用いた車載オーディオ装置および電子機器
WO2018173131A1 (ja) 信号処理装置
WO2016029461A1 (zh) 一种前馈与反馈结合式消除噪声的耳机及其驱动电路
CN104822109B (zh) 一种自适应均衡降噪电路和耳机
JP3223325U (ja) 調整可能なカスタマイズｅｑカーブを有するブルートゥースヘッドセット

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 13880332

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 13880332

Country of ref document: EP

Kind code of ref document: A1