WO2020200132A1 - Electronic apparatus of microphone array and application method thereof - Google Patents

Electronic apparatus of microphone array and application method thereof Download PDF

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Publication number
WO2020200132A1
WO2020200132A1 PCT/CN2020/081914 CN2020081914W WO2020200132A1 WO 2020200132 A1 WO2020200132 A1 WO 2020200132A1 CN 2020081914 W CN2020081914 W CN 2020081914W WO 2020200132 A1 WO2020200132 A1 WO 2020200132A1
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microphone
microphone array
electronic device
performance parameters
chip
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PCT/CN2020/081914
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French (fr)
Chinese (zh)
Inventor
于强
安春璐
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潍坊歌尔微电子有限公司
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Publication of WO2020200132A1 publication Critical patent/WO2020200132A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R29/00—Monitoring arrangements; Testing arrangements
    • H04R29/004—Monitoring arrangements; Testing arrangements for microphones
    • H04R29/005—Microphone arrays
    • 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
    • H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor

Definitions

  • the present invention relates to the field of microphone technology, and more specifically, to an electronic device and an application method of a microphone array.
  • voice algorithms such as beamforming and sound source localization require more than two microphones to be paired in terms of performance.
  • the current practice separate the microphones through the test to ensure that the microphones to be paired are in the same position.
  • the manufacturing cost of the microphone array formed by this method is relatively high; on the other hand, the performance of the microphone elements of the microphone array formed by this method will drift after reflow, resulting in lower product yield, and the higher the number of microphones, the yield rate The lower.
  • the present invention urgently needs a new electronic device with a microphone array and its application method.
  • the purpose of the present invention is to provide an electronic device of a microphone array and an application method thereof, so as to solve the problems of high manufacturing cost and low yield of the existing microphone array.
  • the present invention provides an electronic device with a microphone array, including a housing and a microphone array arranged in the housing, wherein:
  • It also includes an EEPROM storage chip and a DSP chip arranged in the housing; wherein,
  • the microphone array includes at least two microphone monomers
  • the EEPROM storage chip is used to store the performance parameters of each microphone unit of the microphone array
  • the DSP chip is used to process the sound signal picked up by the microphone array to obtain the position of the sound source.
  • a preferred solution is to write the performance parameters of each microphone monomer into the EEPROM memory chip through an I2C or SPI bus.
  • the microphone array is uniformly arranged in the housing in a circular or rectangular shape.
  • each microphone unit includes sensitivity, frequency response, and phase.
  • the present invention also provides an application method of the electronic device of the microphone array, wherein the electronic device of the microphone array is the above-mentioned electronic device of the microphone array, and the specific method is as follows:
  • the DSP processes the sound signal picked up by the microphone array to obtain the position of the sound source.
  • a preferred solution is to store the sensitivity, frequency response, and phase parameters of each microphone monomer to the EEPROM memory chip through the I2C or SPI bus.
  • a sound source localization algorithm based on the sound time difference processes the sound signal picked up by the microphone array to obtain the position of the sound source.
  • the electronic device of the microphone array and its application method provided by the present invention set an EEPROM memory chip in the electronic device of the microphone array, and write the sensitivity, frequency response, phase and other data of each microphone unit In the EEPROM memory chip, when the product is used, the performance data of each microphone unit is transmitted to the DSP chip.
  • the DSP chip performs algorithm processing according to the performance parameters of each microphone unit and the sound signal picked up by the microphone array to determine The precise location of the sound source.
  • the application method of the electronic device of the microphone array makes the position method of the sound source more accurate; and the microphone unit of the electronic device of the microphone array does not need to be controlled in stages, thereby saving the manufacturing cost, even if the microphone The increase in quantity will not have much impact on the product yield.
  • Fig. 1 is a schematic structural diagram of an electronic device of a microphone array according to an embodiment of the present invention
  • Fig. 2 is an application method of an electronic device of a microphone array according to an embodiment of the present invention.
  • the reference signs include: 1. Microphone array, 2. EEPROM memory chip, 3. Shell.
  • the present invention provides a new microphone array device and an application method thereof, so that the obtained sound source location method is more accurate; and this microphone
  • the microphone monomers of the electronic device of the array will not need to be controlled in stages, thereby saving manufacturing costs. Even if the number of microphones increases, it will not have much impact on the product yield.
  • FIG. 1 shows the structure of the electronic device of the microphone array according to an embodiment of the present invention.
  • the electronic device of the microphone array includes: a housing 3, a microphone array 1 arranged in the housing 3, and an EEPROM (Electrically Erasable Programmable Read-Only Memory) Memory chip 2 and DSP (Digital Signal Process, digital signal processing technology) chip.
  • EEPROM Electrically Erasable Programmable Read-Only Memory
  • DSP Digital Signal Process, digital signal processing technology
  • the microphone array 1 includes at least two microphone units; an EEPROM storage chip 2 is used to store the performance parameters of each microphone unit of the microphone array 1; and a DSP chip is used to process the sound signals picked up by the microphone array 1 To get the location of the sound source.
  • the performance parameters of each microphone unit are written into the EEPROM memory chip 2 through an I2C (Inter-Integrated Circuit) bus or an SPI (Serial Peripheral Interface) bus.
  • the performance parameters of each microphone unit include sensitivity, frequency response and phase; before the electronic device product of the microphone array is tested, the sensitivity, frequency response, phase and other data of each microphone unit obtained from the test are written through the I2C bus.
  • the EEPROM memory chip Into the EEPROM memory chip.
  • the microphone array 1 is uniformly arranged in the housing 3 in a circular or rectangular shape.
  • N microphone units are uniformly distributed in the housing 3 in a circular shape, and the sensitivity, frequency response and phase performance parameters of the N microphone units are stored in the EEPROM memory chip 2. in.
  • the performance parameters such as the sensitivity, frequency response and phase of these N microphone units are transmitted to the DSP chip.
  • the DSP chip can know the difference between the N microphone units in advance, so that the sound signal picked up by the microphone array can be obtained. After taking into account the difference of each microphone when calculating, more accurate results can be obtained.
  • the present invention also provides an application method of an electronic device with a microphone array.
  • FIG. 2 shows a flow of an application method of an electronic device with a microphone array according to an embodiment of the present invention.
  • the application method of the electronic device of the microphone array provided by the present invention specifically includes the following steps:
  • S220 Write the performance parameters of each microphone unit of the microphone array into the EEPROM memory chip
  • the DSP processes the sound signal picked up by the microphone array to obtain the position of the sound source.
  • the above is the detailed process of the application method of the electronic device of the microphone array of the present invention.
  • the sensitivity, frequency response and phase parameters of each microphone unit are stored in the EEPROM memory chip through the I2C or SPI bus.
  • the sound source localization algorithm based on the sound time difference processes the sound signal picked up by the microphone array to obtain the position of the sound source.
  • the sound source localization algorithm based on the sound time difference of the present invention is one of the sound source localization algorithms of the microphone array.
  • the sound source localization algorithm of the microphone array may also include: Control beamforming algorithm and estimation algorithm based on high-resolution spectrogram.
  • the above three methods included in the sound source localization algorithm of the microphone array are already relatively mature algorithms in the field, and will not be described in detail in the present invention.
  • each microphone unit Assuming that all the parameters of each microphone unit are the same, when the distance from the sound source to each microphone unit is the same, the signal given by each microphone is also the same. When the sound source deviates from the center value, the microphone gives The signal also produced a difference. The deviation angle of the sound source can be calculated based on this difference. However, because the same microphone (microphone with the same sensitivity, frequency response and phase parameters) does not exist, the traditional method The difference between each microphone unit can only be minimized by dividing the microphone unit, but the difference will definitely exist.
  • the present invention adjusts the sensitivity, frequency response and phase parameters of each microphone unit in advance.
  • the performance parameters are input to the EEPROM memory chip.
  • the EEPROM memory chip transmits the performance parameters of the microphone unit to the DSP chip.
  • the DSP chip can determine the performance parameter difference of each microphone unit, so that the sound signal picked up by the microphone array is based on the sound time difference.
  • the present invention inputs the sensitivity, frequency response and phase parameters of each microphone unit in advance.
  • the EEPROM memory chip transmits the performance parameters of the microphone unit to the DSP chip.
  • the DSP chip processes the sound signal picked up by the microphone array to obtain the sound source Position, not only can obtain a more accurate sound source position, but also no longer make specific requirements for the consistency of the microphone monomer performance parameters, thereby saving manufacturing costs.
  • the electronic device of the microphone array and the application method thereof provided by the present invention are equipped with an EEPROM memory chip in the electronic device of the microphone array, and the sensitivity, frequency response, phase and other data of each microphone unit Write it into the EEPROM memory chip.
  • the DSP chip performs algorithm processing according to the performance parameters of each microphone unit and the sound signal picked up by the microphone array. Determine the precise location of the sound source.
  • the application method of the electronic device of the microphone array makes the position method of the sound source more accurate; and the microphone unit of the electronic device of the microphone array does not need to be controlled in stages, thereby saving the manufacturing cost, even if the microphone The increase in quantity will not have much impact on the product yield.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Manufacturing & Machinery (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)

Abstract

Provided in the present invention are an electronic apparatus of a microphone array and an application method thereof, the method comprising: arranging an EEPROM storage chip in an electronic apparatus of a microphone array; writing performance parameters of each microphone unit in the microphone array to the EEPROM storage chip; by means of the EEPROM storage chip, transmitting the performance parameters of each microphone unit to a DSP chip; and, on the basis of the performance parameters of each microphone unit, the DSP chip processes the audio signals picked up the microphone array to acquire the position of an audio source. Using the present invention can solve the problem of the high manufacturing costs and low product yield of existing microphone arrays.

Description

麦克风阵列的电子装置及其应用方法Microphone array electronic device and application method thereof 技术领域Technical field
本发明涉及麦克风技术领域，更为具体地，涉及一种麦克风阵列的电子装置以及应用方法。The present invention relates to the field of microphone technology, and more specifically, to an electronic device and an application method of a microphone array.
背景技术Background technique
在麦克风阵列的应用中，波束成型、声源定位等语音算法要求两颗以上麦克风在性能上进行配对，当前的做法：将麦克风单体通过测试分档，保证需要配对的麦克风是同一档位，这种方式的形成的麦克风阵列制造成本较高；另一方面这种方法形成的麦克风阵列的麦克风元件在回流后性能会出现漂移，从而造成产品成品率较低，且麦克风数量越多此成品率越低。In the application of microphone arrays, voice algorithms such as beamforming and sound source localization require more than two microphones to be paired in terms of performance. The current practice: separate the microphones through the test to ensure that the microphones to be paired are in the same position. The manufacturing cost of the microphone array formed by this method is relatively high; on the other hand, the performance of the microphone elements of the microphone array formed by this method will drift after reflow, resulting in lower product yield, and the higher the number of microphones, the yield rate The lower.
为解决上述问题，本发明亟需一种新的麦克风阵列的电子装置及其应用方法。In order to solve the above problems, the present invention urgently needs a new electronic device with a microphone array and its application method.
发明内容Summary of the invention
鉴于上述问题，本发明的目的是提供一种麦克风阵列的电子装置及其应用方法，以解决现有的麦克风阵列制造成本高、成品率低等问题。In view of the above-mentioned problems, the purpose of the present invention is to provide an electronic device of a microphone array and an application method thereof, so as to solve the problems of high manufacturing cost and low yield of the existing microphone array.
本发明提供一种麦克风阵列的电子装置，包括外壳、设置在所述外壳内的麦克风阵列，其中，The present invention provides an electronic device with a microphone array, including a housing and a microphone array arranged in the housing, wherein:
还包括设置在所述外壳内的EEPROM存储芯片和DSP芯片；其中，It also includes an EEPROM storage chip and a DSP chip arranged in the housing; wherein,
所述麦克风阵列包括至少两个麦克风单体；The microphone array includes at least two microphone monomers;
所述EEPROM存储芯片，用于存储所述麦克风阵列的每个麦克风单体的性能参数；The EEPROM storage chip is used to store the performance parameters of each microphone unit of the microphone array;
所述DSP芯片，用于对所述麦克风阵列的拾取的声音信号进行处理，获取声源的位置。The DSP chip is used to process the sound signal picked up by the microphone array to obtain the position of the sound source.
此外，优选的方案是，通过I2C或者SPI总线将所述每个麦克风单体的性能参数写入所述EEPROM存储芯片中。In addition, a preferred solution is to write the performance parameters of each microphone monomer into the EEPROM memory chip through an I2C or SPI bus.
此外，优选的方案是，所述麦克风阵列呈圆形或者矩形均匀设置在所述外壳内。In addition, a preferred solution is that the microphone array is uniformly arranged in the housing in a circular or rectangular shape.
此外，优选的方案是，所述每个麦克风单体的性能参数包括灵敏度、频响和相位。In addition, a preferred solution is that the performance parameters of each microphone unit include sensitivity, frequency response, and phase.
本发明还提供一种麦克风阵列的电子装置的应用方法，其中的麦克风阵列的电子装置为上述的麦克风阵列的电子装置，具体方法如下：The present invention also provides an application method of the electronic device of the microphone array, wherein the electronic device of the microphone array is the above-mentioned electronic device of the microphone array, and the specific method is as follows:
将EEPROM存储芯片设置在麦克风阵列的电子装置中；Set the EEPROM memory chip in the electronic device of the microphone array;
将麦克风阵列的每个麦克风单体的性能参数写入到所述EEPROM存储芯片中；Writing the performance parameters of each microphone monomer of the microphone array into the EEPROM memory chip;
通过所述EEPROM存储芯片将每个麦克风单体的性能参数传输至DSP芯片；Transmitting the performance parameters of each microphone monomer to the DSP chip through the EEPROM storage chip;
根据所述每个麦克风单体的性能参数，所述DSP对所述麦克风阵列的拾取的声音信号进行处理，获取声源的位置。According to the performance parameters of each microphone unit, the DSP processes the sound signal picked up by the microphone array to obtain the position of the sound source.
此外，优选的方案是，将每个麦克风单体的灵敏度、频响和相位参数通过I2C或者SPI总线存储到所述EEPROM存储芯片。In addition, a preferred solution is to store the sensitivity, frequency response, and phase parameters of each microphone monomer to the EEPROM memory chip through the I2C or SPI bus.
此外，优选的方案是，基于声音时间差的声源定位算法对所述麦克风阵列的拾取的声音信号进行处理，获取声源的位置。In addition, a preferred solution is that a sound source localization algorithm based on the sound time difference processes the sound signal picked up by the microphone array to obtain the position of the sound source.
从上面的技术方案可知，本发明提供的麦克风阵列的电子装置及其应用方法，在麦克风阵列的电子装置中设置EEPROM存储芯片，并将每个麦克风单体的灵敏度、频响、相位等数据写入EEPROM存储芯片中，在应用该产品时通过将每个麦克风单体的性能数据传输至DSP芯片，DSP芯片根据每个麦克风单体的性能参数与麦克风阵列拾取到的声音信号进行算法处理，确定声源的精确位置。本发明提供的麦克风阵列的电子装置的应用方法，使得得出的声源的位置法更加准确；并且此麦克风阵列的电子装置的麦克风单体将不需要分档管控，从而节省制造成本，即使麦克风数量增加，也不会对产品成品率造成太大的影响。It can be seen from the above technical solutions that the electronic device of the microphone array and its application method provided by the present invention set an EEPROM memory chip in the electronic device of the microphone array, and write the sensitivity, frequency response, phase and other data of each microphone unit In the EEPROM memory chip, when the product is used, the performance data of each microphone unit is transmitted to the DSP chip. The DSP chip performs algorithm processing according to the performance parameters of each microphone unit and the sound signal picked up by the microphone array to determine The precise location of the sound source. The application method of the electronic device of the microphone array provided by the present invention makes the position method of the sound source more accurate; and the microphone unit of the electronic device of the microphone array does not need to be controlled in stages, thereby saving the manufacturing cost, even if the microphone The increase in quantity will not have much impact on the product yield.
为了实现上述以及相关目的，本发明的一个或多个方面包括后面将详细说明的特征。下面的说明以及附图详细说明了本发明的某些示例性方面。然而，这些方面指示的仅仅是可使用本发明的原理的各种方式中的一些方式。此外，本发明旨在包括所有这些方面以及它们的等同物。In order to achieve the above and related objects, one or more aspects of the present invention include features that will be described in detail later. The following description and the accompanying drawings detail certain exemplary aspects of the present invention. However, these aspects indicate only some of the various ways in which the principles of the present invention can be used. Furthermore, the present invention is intended to include all these aspects and their equivalents.
附图说明Description of the drawings
通过参考以下结合附图的说明，并且随着对本发明的更全面理解，本发明的其它目的及结果将更加明白及易于理解。在附图中：By referring to the following description in conjunction with the accompanying drawings, and with a more comprehensive understanding of the present invention, other objectives and results of the present invention will be more clear and easier to understand. In the attached picture:
图1为根据本发明实施例的麦克风阵列的电子装置结构示意图；Fig. 1 is a schematic structural diagram of an electronic device of a microphone array according to an embodiment of the present invention;
图2为根据本发明实施例的麦克风阵列的电子装置的应用方法。Fig. 2 is an application method of an electronic device of a microphone array according to an embodiment of the present invention.
其中的附图标记包括：1、麦克风阵列，2、EEPROM存储芯片，3、外壳。The reference signs include: 1. Microphone array, 2. EEPROM memory chip, 3. Shell.
在所有附图中相同的标号指示相似或相应的特征或功能。The same reference numerals in all drawings indicate similar or corresponding features or functions.
具体实施方式detailed description
在下面的描述中，出于说明的目的，为了提供对一个或多个实施例的全面理解，阐述了许多具体细节。然而，很明显，也可以在没有这些具体细节的情况下实现这些实施例。In the following description, for illustrative purposes, in order to provide a comprehensive understanding of one or more embodiments, many specific details are set forth. However, it is obvious that these embodiments can also be implemented without these specific details.
针对前述提出的现有的麦克风阵列制造成本高、成品率低等问题，本发明提供了一种新的麦克风阵列装置及其应用方法，使得得出的声源的位置法更加准确；并且此麦克风阵列的电子装置的麦克风单体将不需要分档管控，从而节省制造成本，即使麦克风数量增加，也不会对产品成品率造成太大的影响。In view of the aforementioned problems of high manufacturing cost and low yield of existing microphone arrays, the present invention provides a new microphone array device and an application method thereof, so that the obtained sound source location method is more accurate; and this microphone The microphone monomers of the electronic device of the array will not need to be controlled in stages, thereby saving manufacturing costs. Even if the number of microphones increases, it will not have much impact on the product yield.
以下将结合附图对本发明的具体实施例进行详细描述。The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
为了说明本发明提供的麦克风阵列的电子装置的结构，图1示出了根据本发明实施例的麦克风阵列的电子装置结构。To illustrate the structure of the electronic device of the microphone array provided by the present invention, FIG. 1 shows the structure of the electronic device of the microphone array according to an embodiment of the present invention.
如图1所示，本发明提供的麦克风阵列的电子装置，包括：外壳3、设置在外壳3内的麦克风阵列1、EEPROM(Electrically Erasable Programmable Read-Only Memory，带电可擦可编程只读存储器)存储芯片2和DSP(Digital Signal Process，数字信号处理技术)芯片。As shown in Figure 1, the electronic device of the microphone array provided by the present invention includes: a housing 3, a microphone array 1 arranged in the housing 3, and an EEPROM (Electrically Erasable Programmable Read-Only Memory) Memory chip 2 and DSP (Digital Signal Process, digital signal processing technology) chip.
其中，麦克风阵列1包括至少两个麦克风单体形成；EEPROM存储芯片 2，用于存储麦克风阵列1的每个麦克风单体的性能参数；DSP芯片，用于对麦克风阵列1拾取的声音信号进行处理，获取声源的位置。Among them, the microphone array 1 includes at least two microphone units; an EEPROM storage chip 2 is used to store the performance parameters of each microphone unit of the microphone array 1; and a DSP chip is used to process the sound signals picked up by the microphone array 1 To get the location of the sound source.
在本发明的实施例中，通过I2C(Inter－Integrated Circuit)总线或者SPI(Serial Peripheral Interface，串行外设接口)总线将每个麦克风单体的性能参数写入EEPROM存储芯片2中。其中，每个麦克风单体的性能参数包括灵敏度、频响和相位等；麦克风阵列的电子装置产品出厂测试前，将测试所得每颗麦克风单体的灵敏度、频响、相位等数据通过I2C总线写入EEPROM存储芯片中。In the embodiment of the present invention, the performance parameters of each microphone unit are written into the EEPROM memory chip 2 through an I2C (Inter-Integrated Circuit) bus or an SPI (Serial Peripheral Interface) bus. Among them, the performance parameters of each microphone unit include sensitivity, frequency response and phase; before the electronic device product of the microphone array is tested, the sensitivity, frequency response, phase and other data of each microphone unit obtained from the test are written through the I2C bus. Into the EEPROM memory chip.
其中，麦克风阵列1呈圆形或者矩形均匀设置在外壳3内。如图1所示的实施例中，N个麦克风单体呈圆形均匀分布在外壳3内，并且这N个麦克风单体的灵敏度、频响和相位等的性能参数均存储在EEPROM存储芯片2中。同时，将这些N个麦克风单体的灵敏度、频响和相位等的性能参数传输到DSP芯片中，DSP芯片可以提前知道N个麦克风单体之间的差异，这样在得到麦克风阵列拾取的声音信号后进行计算时把每个麦克风的差异考虑进去，就可以得到更加精确的结果。The microphone array 1 is uniformly arranged in the housing 3 in a circular or rectangular shape. In the embodiment shown in Figure 1, N microphone units are uniformly distributed in the housing 3 in a circular shape, and the sensitivity, frequency response and phase performance parameters of the N microphone units are stored in the EEPROM memory chip 2. in. At the same time, the performance parameters such as the sensitivity, frequency response and phase of these N microphone units are transmitted to the DSP chip. The DSP chip can know the difference between the N microphone units in advance, so that the sound signal picked up by the microphone array can be obtained. After taking into account the difference of each microphone when calculating, more accurate results can be obtained.
与上述装置相对应，本发明还提供一种麦克风阵列的电子装置的应用方法，图2示出了根据本发明实施例的麦克风阵列的电子装置的应用方法流程。Corresponding to the above-mentioned device, the present invention also provides an application method of an electronic device with a microphone array. FIG. 2 shows a flow of an application method of an electronic device with a microphone array according to an embodiment of the present invention.
如图2所示，本发明提供的麦克风阵列的电子装置的应用方法，具体包括如下步骤：As shown in FIG. 2, the application method of the electronic device of the microphone array provided by the present invention specifically includes the following steps:
S210：将EEPROM存储芯片设置在麦克风阵列的电子装置中；S210: Set the EEPROM storage chip in the electronic device of the microphone array;
S220：将麦克风阵列的每个麦克风单体的性能参数写入到EEPROM存储芯片中；S220: Write the performance parameters of each microphone unit of the microphone array into the EEPROM memory chip;
S230：通过EEPROM存储芯片将每个麦克风单体的性能参数传输至DSP芯片；S230: Transmit the performance parameters of each microphone monomer to the DSP chip through the EEPROM memory chip;
S240：根据每个麦克风单体的性能参数，DSP对所述麦克风阵列的拾取的声音信号进行处理，获取声源的位置。S240: According to the performance parameters of each microphone unit, the DSP processes the sound signal picked up by the microphone array to obtain the position of the sound source.
上述为本发明的麦克风阵列的电子装置的应用方法详细流程，在此过程中，将每个麦克风单体的灵敏度、频响和相位参数通过I2C或者SPI总线存储到EEPROM存储芯片。The above is the detailed process of the application method of the electronic device of the microphone array of the present invention. In this process, the sensitivity, frequency response and phase parameters of each microphone unit are stored in the EEPROM memory chip through the I2C or SPI bus.
在本发明的实施例中，基于声音时间差的声源定位算法对麦克风阵列的 拾取的声音信号进行处理，获取声源的位置。In the embodiment of the present invention, the sound source localization algorithm based on the sound time difference processes the sound signal picked up by the microphone array to obtain the position of the sound source.
其中，本发明的基于声音时间差的声源定位算法是麦克风阵列的声源定位算法中的其中一种算法，在实际应用中，麦克风阵列的声源定位算法还可以包括：基于最大输出功率的可控波束形成算法以及基于高分辨率谱图的估计算法。其中，麦克风阵列的声源定位算法包括的上述三种方法，已经是本领域的比较成熟的算法，在本发明中不在做详细赘述。Among them, the sound source localization algorithm based on the sound time difference of the present invention is one of the sound source localization algorithms of the microphone array. In practical applications, the sound source localization algorithm of the microphone array may also include: Control beamforming algorithm and estimation algorithm based on high-resolution spectrogram. Among them, the above three methods included in the sound source localization algorithm of the microphone array are already relatively mature algorithms in the field, and will not be described in detail in the present invention.
假设每个麦克风单体的所有参数都是一致的，那么当声源到每个麦克风单体的距离相同时，每个麦克风给出的信号也是一致的，当声源偏离中心值，麦克风给出的信号也就产生了差异，可以根据这种差异来计算声源的偏离角度，但是由于完全相同的麦克风(完全相同的灵敏度、频响和相位参数的麦克风)是不存在的，所以传统的方法只能通过麦克风单体分档来尽量减少每个麦克风单体之间的差异，但差异一定还会存在。Assuming that all the parameters of each microphone unit are the same, when the distance from the sound source to each microphone unit is the same, the signal given by each microphone is also the same. When the sound source deviates from the center value, the microphone gives The signal also produced a difference. The deviation angle of the sound source can be calculated based on this difference. However, because the same microphone (microphone with the same sensitivity, frequency response and phase parameters) does not exist, the traditional method The difference between each microphone unit can only be minimized by dividing the microphone unit, but the difference will definitely exist.
由于在实际应用中灵敏度、频响和相位参数等性能参数完全相同的麦克风是不存在，本发明为了获取更精确的声源位置，通过提前将每个麦克风单体的灵敏度、频响和相位参数等性能参数输入到EEPROM存储芯片，EEPROM存储芯片将麦克风单体的性能参数传输到DSP芯片，DSP芯片可以确定每个麦克风单体的性能参数差异，这样在麦克风阵列拾取的声音信号后基于声音时间差的声源定位算法进行计算时，将每个麦克风单体性能参数之间的差异考虑进去，就可以得到更加精确的结果，同时对麦克风性能参数一致性的要求也随之降低。Since there are no microphones with the same performance parameters as sensitivity, frequency response and phase parameters in practical applications, in order to obtain a more accurate sound source position, the present invention adjusts the sensitivity, frequency response and phase parameters of each microphone unit in advance. The performance parameters are input to the EEPROM memory chip. The EEPROM memory chip transmits the performance parameters of the microphone unit to the DSP chip. The DSP chip can determine the performance parameter difference of each microphone unit, so that the sound signal picked up by the microphone array is based on the sound time difference When calculating the sound source localization algorithm, taking into account the difference between the performance parameters of each microphone, more accurate results can be obtained, and the requirements for the consistency of microphone performance parameters are also reduced.
也就是说，本发明为了解决传统的通过麦克风单体分档来尽量减少每个麦克风单体之间的差异的问题，提前将每个麦克风单体的灵敏度、频响和相位参数等性能参数输入到EEPROM存储芯片中，EEPROM存储芯片将麦克风单体的性能参数传输到DSP芯片，根据每个麦克风单体的不同的性能参数，DSP芯片对麦克风阵列的拾取的声音信号进行处理，获取声源的位置，这样做不但能够获取更为精确的声源位置，同时还能对麦克风单体性能参数的一致性不再做具体要求，从而节省制造成本。In other words, in order to solve the traditional problem of minimizing the difference between each microphone unit by dividing the microphone units, the present invention inputs the sensitivity, frequency response and phase parameters of each microphone unit in advance. In the EEPROM memory chip, the EEPROM memory chip transmits the performance parameters of the microphone unit to the DSP chip. According to the different performance parameters of each microphone unit, the DSP chip processes the sound signal picked up by the microphone array to obtain the sound source Position, not only can obtain a more accurate sound source position, but also no longer make specific requirements for the consistency of the microphone monomer performance parameters, thereby saving manufacturing costs.
通过上述实施方式可以看出，本发明提供的麦克风阵列的电子装置及其应用方法，在麦克风阵列的电子装置中设置EEPROM存储芯片，并将每个麦 克风单体的灵敏度、频响、相位等数据写入EEPROM存储芯片中，在应用该产品时通过将每个麦克风单体的性能数据传输至DSP芯片，DSP芯片根据每个麦克风单体的性能参数与麦克风阵列拾取到的声音信号进行算法处理，确定声源的精确位置。本发明提供的麦克风阵列的电子装置的应用方法，使得得出的声源的位置法更加准确；并且此麦克风阵列的电子装置的麦克风单体将不需要分档管控，从而节省制造成本，即使麦克风数量增加，也不会对产品成品率造成太大的影响。It can be seen from the above embodiments that the electronic device of the microphone array and the application method thereof provided by the present invention are equipped with an EEPROM memory chip in the electronic device of the microphone array, and the sensitivity, frequency response, phase and other data of each microphone unit Write it into the EEPROM memory chip. When using this product, by transmitting the performance data of each microphone unit to the DSP chip, the DSP chip performs algorithm processing according to the performance parameters of each microphone unit and the sound signal picked up by the microphone array. Determine the precise location of the sound source. The application method of the electronic device of the microphone array provided by the present invention makes the position method of the sound source more accurate; and the microphone unit of the electronic device of the microphone array does not need to be controlled in stages, thereby saving the manufacturing cost, even if the microphone The increase in quantity will not have much impact on the product yield.
如上参照附图以示例的方式描述了根据本发明提出的麦克风阵列的电子装置及其应用方法。但是，本领域技术人员应当理解，对于上述本发明所提出的麦克风阵列的电子装置及其应用方法，还可以在不脱离本发明内容的基础上做出各种改进。因此，本发明的保护范围应当由所附的权利要求书的内容确定。As above, the electronic device of the microphone array and the application method thereof according to the present invention are described by way of example with reference to the accompanying drawings. However, those skilled in the art should understand that various improvements can be made without departing from the content of the present invention on the electronic device of the microphone array and its application method proposed by the present invention. Therefore, the protection scope of the present invention should be determined by the content of the appended claims.

Claims (7)

  1. 一种麦克风阵列的电子装置，包括外壳、设置在所述外壳内的麦克风阵列，其特征在于，An electronic device with a microphone array, comprising a casing and a microphone array arranged in the casing, characterized in that:
    还包括设置在所述外壳内的EEPROM存储芯片和DSP芯片；其中，It also includes an EEPROM storage chip and a DSP chip arranged in the housing; wherein,
    所述麦克风阵列包括至少两个麦克风单体；The microphone array includes at least two microphone monomers;
    所述EEPROM存储芯片，用于存储所述麦克风阵列的每个麦克风单体的性能参数；The EEPROM storage chip is used to store the performance parameters of each microphone unit of the microphone array;
    所述DSP芯片，用于对所述麦克风阵列的拾取的声音信号进行处理，获取声源的位置。The DSP chip is used to process the sound signal picked up by the microphone array to obtain the position of the sound source.
  2. 如权利要求1所述的麦克风阵列的电子装置，其特征在于，The electronic device of the microphone array according to claim 1, wherein:
    通过I2C或者SPI总线将所述每个麦克风单体的性能参数写入所述EEPROM存储芯片中。The performance parameters of each microphone monomer are written into the EEPROM storage chip through the I2C or SPI bus.
  3. 如权利要求1所述的麦克风阵列的电子装置，其特征在于，The electronic device of the microphone array according to claim 1, wherein:
    所述麦克风阵列呈圆形或者矩形均匀设置在所述外壳内。The microphone array is uniformly arranged in the housing in a circular or rectangular shape.
  4. 如权利要求1所述的麦克风阵列的电子装置，其特征在于，The electronic device of the microphone array according to claim 1, wherein:
    所述每个麦克风单体的性能参数包括灵敏度、频响和相位。The performance parameters of each microphone unit include sensitivity, frequency response and phase.
  5. 一种麦克风阵列的电子装置的应用方法，所述麦克风阵列的电子装置为如权利要求1-4任一项所述的麦克风阵列的电子装置，具体方法如下：An application method of an electronic device of a microphone array, wherein the electronic device of the microphone array is the electronic device of the microphone array according to any one of claims 1-4, and the specific method is as follows:
    将EEPROM存储芯片设置在麦克风阵列的电子装置中；Set the EEPROM memory chip in the electronic device of the microphone array;
    将麦克风阵列的每个麦克风单体的性能参数写入到所述EEPROM存储芯片中；Writing the performance parameters of each microphone monomer of the microphone array into the EEPROM memory chip;
    通过所述EEPROM存储芯片将每个麦克风单体的性能参数传输至DSP芯片；Transmitting the performance parameters of each microphone monomer to the DSP chip through the EEPROM storage chip;
    根据所述每个麦克风单体的性能参数，所述DSP芯片对所述麦克风阵列的拾取的声音信号进行处理，获取声源的位置。According to the performance parameters of each microphone unit, the DSP chip processes the sound signal picked up by the microphone array to obtain the position of the sound source.
  6. 如权利要求5所述的麦克风阵列的电子装置的应用方法，其特征在于，The application method of the electronic device of the microphone array according to claim 5, wherein:
    将每个麦克风单体的灵敏度、频响和相位参数通过I2C或者SPI总线存储到所述EEPROM存储芯片。The sensitivity, frequency response and phase parameters of each microphone unit are stored in the EEPROM memory chip through the I2C or SPI bus.
  7. 如权利要求5所述的麦克风阵列的电子装置的应用方法，其特征在于，The application method of the electronic device of the microphone array according to claim 5, wherein:
    基于声音时间差的声源定位算法对所述麦克风阵列的拾取的声音信号进行处理，获取声源的位置。The sound source localization algorithm based on the sound time difference processes the sound signal picked up by the microphone array to obtain the position of the sound source.
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