WO2020200132A1 - Appareil électronique d'un réseau de microphones et son procédé d'application - Google Patents

Appareil électronique d'un réseau de microphones et son procédé d'application 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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WO
WIPO (PCT)
Prior art keywords
microphone
microphone array
electronic device
performance parameters
chip
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Application number
PCT/CN2020/081914
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English (en)
Chinese (zh)
Inventor
于强
安春璐
Original Assignee
潍坊歌尔微电子有限公司
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Publication date
Application filed by 潍坊歌尔微电子有限公司 filed Critical 潍坊歌尔微电子有限公司
Publication of WO2020200132A1 publication Critical patent/WO2020200132A1/fr

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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

La présente invention porte sur un appareil électronique d'un réseau de microphones et sur son procédé d'application, le procédé consistant : à agencer une puce de stockage EEPROM dans un appareil électronique d'un réseau de microphones ; à écrire des paramètres de performance de chaque unité de microphone dans le réseau de microphones dans la puce de stockage EEPROM ; au moyen de la puce de stockage EEPROM, à transmettre les paramètres de performance de chaque unité de microphone à une puce DSP ; et, sur la base des paramètres de performance de chaque unité de microphone, la puce DSP traite les signaux audio captés par le réseau de microphones pour acquérir la position d'une source audio. L'utilisation de la présente invention peut résoudre le problème des coûts de fabrication élevés et du rendement de production réduit de réseaux de microphones existants.
PCT/CN2020/081914 2019-04-01 2020-03-28 Appareil électronique d'un réseau de microphones et son procédé d'application WO2020200132A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910257280.7 2019-04-01
CN201910257280.7A CN110121132A (zh) 2019-04-01 2019-04-01 麦克风阵列的电子装置及其应用方法

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WO2020200132A1 true WO2020200132A1 (fr) 2020-10-08

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CN110121132A (zh) * 2019-04-01 2019-08-13 歌尔股份有限公司 麦克风阵列的电子装置及其应用方法
UA144189U (uk) * 2020-04-06 2020-09-10 Ферон (Фзс) Фрі Зоне Ко. Віз Лімітед Ліабіліті Система повідомлень в готелях
CN111757237A (zh) * 2020-06-22 2020-10-09 潍坊歌尔微电子有限公司 麦克风性能参数处理方法、装置及存储介质
CN114089141A (zh) * 2022-01-24 2022-02-25 杭州兆华电子股份有限公司 一种局部放电检测方法及局部放电检测装置

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