WO2014071537A1 - 一种耳声发射仿真测试*** - Google Patents

一种耳声发射仿真测试*** Download PDF

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Publication number
WO2014071537A1
WO2014071537A1 PCT/CN2012/001495 CN2012001495W WO2014071537A1 WO 2014071537 A1 WO2014071537 A1 WO 2014071537A1 CN 2012001495 W CN2012001495 W CN 2012001495W WO 2014071537 A1 WO2014071537 A1 WO 2014071537A1
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WIPO (PCT)
Prior art keywords
interface
otoacoustic emission
test system
bracket
simulation test
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PCT/CN2012/001495
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English (en)
French (fr)
Inventor
胡秉谊
白璐
钟波
吴彤
邰婉婷
Original Assignee
北京交通大学
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Application filed by 北京交通大学 filed Critical 北京交通大学
Priority to PCT/CN2012/001495 priority Critical patent/WO2014071537A1/zh
Priority to CN201210507161.0A priority patent/CN103027688B/zh
Publication of WO2014071537A1 publication Critical patent/WO2014071537A1/zh

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/12—Audiometering
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/0093—Detecting, measuring or recording by applying one single type of energy and measuring its conversion into another type of energy
    • A61B5/0095—Detecting, measuring or recording by applying one single type of energy and measuring its conversion into another type of energy by applying light and detecting acoustic waves, i.e. photoacoustic measurements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/30—Monitoring or testing of hearing aids, e.g. functioning, settings, battery power

Definitions

  • the invention belongs to the technical field of medical audiology detection systems, and particularly relates to an otoacoustic emission simulation test system.
  • Otoacoustic emissions are actively generated by the cochlea (which can also be induced by the instrument, induced by hearing) with very weak acoustic energy.
  • Otoacoustic emission detection is an objective hearing test method from infants and young children. After a weak stimulus signal is given to the cochlea, the weak acoustic energy is detected by a probe, a transceiver, etc., to achieve the purpose of hearing detection.
  • the acoustic signal of the ear sound is very weak, it is easy to be immersed in the environmental noise, and the signal detected by the ear sound emission detector is also small.
  • the ordinary calibration instrument is mainly divided into two parts: the sensitivity and accuracy of the detection instrument amplifier, and the sound pressure level of the otoacoustic stimulation signal. calibration. Without the detection of the signal detection capability, it cannot directly indicate that the system can accurately detect the weak acoustic signal of the ear sound, and usually relies on the statistics of the clinical test results to be corrected.
  • the present invention provides an otoacoustic emission simulation test system, in which the simulated electronic cochlea simulates the environmental noise and periodicity after detecting the stimulation sound signal emitted by the otoacoustic emission detector by electronic means.
  • the otoacoustic emission signal is outputted, and the otoacoustic emission detector is detected by comparing the signal collected by the otoacoustic emission detector with the signal from the simulated electronic cochlea to verify whether the otoacoustic emission detector can detect the otoacoustic emission signal.
  • the purpose of the calibration is described in which the simulated electronic cochlea simulates the environmental noise and periodicity after detecting the stimulation sound signal emitted by the otoacoustic emission detector by electronic means.
  • the otoacoustic emission signal is outputted, and the otoacoustic emission detector is detected by comparing the signal collected by the otoacoustic emission detector with the signal from the simulated electronic cochlea
  • An otoacoustic emission simulation test system wherein an acoustic input fixing buckle is connected with an input end of a 2 cm 3 coupling cavity, and the two form a cavity, and the earphone bracket is fixedly mounted in the cavity; 2 cm 3 coupling cavity
  • the output end interface is sealed with one end of the interface bracket through an O-ring; the other end of the interface bracket is connected to the acoustic receiving and outputting portion of the simulated electronic cochlear; the acoustic receiving and outputting portion of the simulated electronic cochlear is connected to the electrical interface portion of the simulated electronic cochlea, Simulate the electronic cochlea.
  • the 2 cm 3 coupling cavity is a simulated ear according to the IEC 60318-5 standard for calibration.
  • the portion of the simulated electronic cochlear sound receiving and outputting portion connected to the interface bracket is the same size as the measuring 1/2 inch standard microphone, and the simulated electronic cochlear sound receiving and outputting portion is combined with the simulated electronic cochlear electrical interface portion.
  • the artificial ear it is interchanged with the measurement 1/2 inch standard microphone to achieve the purpose of calibration of the otoacoustic emission detector.
  • the 2 cm 3 coupling cavity has an output interface that is 1 inch in size and is interchangeable with a 1-inch standard microphone for measurement.
  • the interface bracket is not installed, and the otoacoustic emission detector is calibrated.
  • a 1-inch standard microphone is used, that is, the system is applicable to both 1/2-inch and 1-inch standard microphones, and is versatile.
  • the input interface of the 2 cm 3 coupling cavity is 1/2 inch in size.
  • the system uses a 1/2-inch standard microphone to calibrate the part of the simulated electronic cochlear sound receiving and output part combined with the simulated electronic cochlear electronic control part.
  • the 2 cm 3 coupling cavity, the interface bracket and the simulated electronic cochlear sounding part are combined and fixedly mounted in the system bracket.
  • the invention can effectively utilize the sound source simulation to generate weak periodic otoacoustic emission signals and environmental noise.
  • the acoustic signal restores the basic functions of the human cochlea and simulates the actual otoacoustic emission effect.
  • the present invention provides a synchronous detection signal of a periodic otoacoustic emission signal, synchronizing the weak periodic otoacoustic emission signals under ambient noise to ensure the integrity and validity of the output otoacoustic emission signal, For calibration of an otoacoustic emission detector;
  • the simulated electronic cochlear probe of the present invention is the same size as the standard 1/2 inch standard microphone, and can be directly replaced without destroying the simulated ear characteristics as needed.
  • Figure 1 is an external view of the present invention
  • Figure 2 is a cross-sectional view of the present invention
  • Figure 3 is an exploded perspective view of the present invention
  • FIG. 4 is a working flow chart of the present invention.
  • the present invention provides an otoacoustic emission simulation test system, and the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
  • An ear acoustic emission simulation test system wherein the sound input port fixing buckle 1 is connected to the input end interface 3 of the 2 cm 3 coupling cavity 4, and the two form a cavity, and the earphone bracket 2 is fixedly mounted in the cavity;
  • the output interface 5 of the 2 cm 3 coupling cavity 4 is sealed with one end of the interface bracket 6 through an O-ring; the other end of the interface bracket 6 is connected to the simulated electronic cochlear sound receiving and outputting portion 8; the simulated electronic cochlear sound receiving and transmitting
  • the output portion 8 is connected to the simulated electronic cochlear electrical interface portion 9 to form a simulated electronic cochlea.
  • the 2 cm 3 coupling cavity 4 is a simulated ear according to the IEC 60318-5 standard for calibration.
  • the portion of the simulated electronic cochlear acoustic receiving and outputting portion 8 connected to the interface bracket 6 is the same size as the measuring 1/2 inch standard microphone, and the simulated electronic cochlear acoustic receiving and outputting portion 8 and the simulated electronic cochlear electrical interface portion are 9 combined, in the artificial ear, and the measurement with a 1/2-inch standard microphone interchange, to achieve the purpose of calibration of the otoacoustic emission detector.
  • the output interface 5 of the 2 cm 3 coupling cavity 4 is 1 inch in size and is interchangeable with a 1 inch standard microphone for measurement.
  • the interface bracket 6 is not installed, and the otoacoustic emission detector is calibrated, and a 1-inch standard microphone is used, that is, the system is applicable to both 1/2-inch and 1-inch standard microphones, and has versatility.
  • the input interface 3 of the 2 cm 3 coupling cavity 4 is 1/2 inch in size.
  • the system uses a 1/2 inch standard microphone to calibrate the portion of the simulated electronic cochlear sound receiving and outputting portion 8 combined with the simulated electronic cochlear electrical interface portion 9.
  • the 2 cm 3 coupling cavity 4, the interface bracket 6 and the simulated electronic cochlear sounding portion 8 are combined and fixedly mounted in the system bracket 7.
  • the sound input port fixing buckle 1 of the present invention is connected with the input end interface 3 of the 2 cm 3 coupling cavity 4 to achieve the function of fixing the earphone bracket 2 in the cavity formed by the two; the earphone bracket 2 can be different according to the actual earphone model used. Replace it for inputting the click sound of the Otoacoustic Emission Tester for the next test.
  • the 2 cm 3 coupling cavity 4 used in the present invention is an artificial ear conforming to the IEC 60318-5 standard.
  • the size of the interface bracket 6 conforms to the size of the standard measuring microphone, and can be simulated without damage after connecting the simulated electronic cochlea. The measurement is done with the ear characteristics.
  • the output interface 5 of the 2 cm 3 coupling cavity 4 is connected to the interface bracket 6; the simulated electronic cochlear is connected to the interface bracket 6 and sealed by an O-ring for detecting the stimuli of the simulated electronic cochlea.
  • the input terminal 3 through 2 cm of the coupling cavity 4 during the operation of the output terminal 3 and 2 cm 3 chamber 4 coupled to an interface 5 is attached to the bracket 6 on the interface, the interface to facilitate the measurement.
  • the otoacoustic emission detector After the otoacoustic emission detector emits a stimulating sound signal, it is received into the 2 cm 3 coupling cavity 4 through the in-ear earphone, and is received by the probe of the simulated electronic cochlear to drive the simulated electronic cochlear sound.
  • the receiving and outputting portion 8 generates a weak signal of the vocal echo echo and a white acoustic mixed acoustic signal simulating the ambient noise.
  • the periodic ear emitted by the electronic cochlear acoustic receiving and outputting portion 8 is simulated. Acoustic emission signals can be transmitted and recorded.
  • the electronic ear cochlear sound receiving and outputting portion 8 generates an ear sound periodic signal, and a synchronous detecting signal is generated.
  • the synchronous accumulator starts to detect the ear sound periodic signal emitted by the simulated electronic cochlea, and each detected
  • the ear sound periodic signal is collected once by a synchronous detection signal, and the ear sound periodic signal is processed into a synchronous signal by the sensor and the modem, and the ear sound emitted by the simulated electronic cochlea is output after the synchronous accumulation processing.
  • the processed signal can effectively remove white noise in the environment, ensure the integrity and validity of the output signal, and be used for system calibration.

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Abstract

一种耳声发射仿真测试***，属于医学听力学检测***的技术领域。所述耳声发射仿真测试***包括：声输入口固定扣（1）与2cm3耦合腔（4）的输入端接口（3）相连，二者形成一个腔体，耳机支架（2）固定安装在所述腔体中；2cm3耦合腔（4）的输出端接口（5）与接口支架（6）的一端通过O型圈密封连接；接口支架（6）的另一端与仿真电子耳蜗声接收与输出部分（8）相连；仿真电子耳蜗声接收与输出部分（8）与仿真电子耳蜗电气接口部分（9）相连，构成仿真电子耳蜗。所述耳声发射仿真测试***可以还原人类耳蜗的基础功能，模拟实际耳声发射效果，同时保证输出的耳声发射信号的完整性与有效性。此外，仿真电子耳蜗探头与测量用标准传声器尺寸相同，可在不破坏仿真耳特性的情况下直接进行替换。

Description

一种耳声发射仿真测试***
技术领域
本发明属于医学听力学检测***技术领域， 特别涉及一种耳声发射仿真测 试***。
背景技术
耳声发射是耳蜗主动产生 （也可以由仪器给声诱导， 用听觉诱发） 非常微 弱的声能量。 耳声发射检测是从婴幼儿开始的客观听力检査方法， 通过给耳蜗 一个微弱的刺激信号后， 用探头、 收发器等检测这种微弱声能量， 达到听力检 查的目的。
目前的耳声检测中， 由于耳声的声信号非常微弱， 容易湮没在环境噪声中， 耳声发射检测仪检测的信号也较小。 对耳声发射检测仪检测与校准时， 难以模 拟人耳发出的耳声， 普通的校准仪器主要分为两部分： 检测仪器放大器的灵敏 度和准确度， 发出的耳声刺激信号的声压级的校准。 没有对信号检测能力的检 测， 不能直接说明***可以准确的检测到耳声的微弱声信号， 通常依靠临床测 试结果的统计予以校订。
发明内容
本发明为克服现有技术的不足， 提供了一种耳声发射仿真测试***， 该系 统内仿真电子耳蜗通过电子手段检测到耳声发射检测仪发出的刺激声信号后， 模拟环境噪声和周期性耳声发射信号进行输出， 通过比较耳声发射检测仪采集 到的信号和仿真电子耳蜗发出的信号， 从而验证耳声发射检测仪是否能够检测 到耳声发射信号， 达到对耳声发射检测仪检测校准的目的。 一种耳声发射仿真测试***，其声输入口固定扣与 2 cm3耦合腔的输入端接 口相连， 二者形成一个腔体， 耳机支架固定安装在所述腔体中； 2 cm3耦合腔的 输出端接口与接口支架的一端通过 O型圈密封连接； 接口支架的另一端与仿真 电子耳蜗声接收与输出部分相连； 仿真电子耳蜗声接收与输出部分与仿真电子 耳蜗电气接口部分相连， 构成仿真电子耳蜗。
所述 2 cm3耦合腔为符合 IEC 60318-5标准的仿真耳， 用来定标。
所述仿真电子耳蜗声接收与输出部分与接口支架连接的部分， 其尺寸与测 量用 1/2英寸标准传声器的尺寸相同，仿真电子耳蜗声接收与输出部分与仿真电 子耳蜗电气接口部分结合起来，在仿真耳中，与测量用 1/2英寸标准传声器互换， 实现对耳声发射检测仪定标的目的。
所述的 2 cm3耦合腔的输出端接口的尺寸为 1英寸，与测量用 1英寸标准传 声器互换。 测试时， 不安装接口支架， 对耳声发射检测仪进行标定， 则采用 1 英寸的标准传声器， 即***对于 1/2英寸和 1英寸标准传声器二者均适用， 具有 通用性。
所述 2 cm3耦合腔的输入端接口的尺寸为 1/2英寸。***不安装耳机支架时， ***用 1/2 英寸标准传声器来标定仿真电子耳蜗声接收与输出部分与仿真电子 耳蜗电控部分结合起来的部分。
所述 2 cm3耦合腔、接口支架和仿真电子耳蜗发声部分组合后固定安装在系 统支架内。
本发明的有益效果是：
1. 本发明可以有效利用声源模拟产生微弱的周期性耳声发射信号和环境噪 声信号， 还原人类耳蜗的基础功能， 模拟实际耳声发射效果。 与此同时， 本发 明提供周期性耳声发射信号的同步检测信号， 对环境噪音下的微弱的周期性耳 声发射信号进行同步累计， 保证输出的耳声发射信号的完整性与有效性， 以用 于对耳声发射检测仪的校准；
2. 本发明的仿真电子耳蜗探头与测量用 1/2英寸的标准传声器尺寸相同， 需要时可在不破坏仿真耳特性的情况下直接进行替换。
附图说明
图 1为本发明的外观图；
图 2为本发明的剖面图；
图 3为本发明的部件分解透视图；
图 4为本发明的工作流程图；
图中标号： 1-声输入口固定扣； 2-耳机支架； 3-输入端接口； 4-2cm3耦合腔; 5-输出端接口； 6-接口支架； 7-***支架； 8-仿真电子耳蜗声接收与输出部分； 9-仿真电子耳蜗电气接口部分。
具体实施方式
本发明提供了一种耳声发射仿真测试***， 下面结合附图和具体实施方式 对本发明做进一步说明。
一种耳声发射仿真测试***，其声输入口固定扣 1与 2 cm3耦合腔 4的输入 端接口 3相连， 二者形成 1个腔体， 耳机支架 2固定安装在所述腔体中； 2 cm3 耦合腔 4的输出端接口 5与接口支架 6的一端通过 O型圈密封连接； 接口支架 6的另一端与仿真电子耳蜗声接收与输出部分 8相连；仿真电子耳蜗声接收与输 出部分 8与仿真电子耳蜗电气接口部分 9相连， 构成仿真电子耳蜗。 所述 2 cm3耦合腔 4为符合 IEC 60318-5标准的仿真耳， 用来定标。
所述仿真电子耳蜗声接收与输出部分 8与接口支架 6连接的部分， 其尺寸 与测量用 1/2英寸标准传声器的尺寸相同，仿真电子耳蜗声接收与输出部分 8与 仿真电子耳蜗电气接口部分 9结合起来，在仿真耳中， 与测量用 1/2英寸标准传 声器互换， 实现对耳声发射检测仪定标的目的。
所述的 2 cm3耦合腔 4的输出端接口 5的尺寸为 1英寸，与测量用 1英寸标 准传声器互换。 测试时， 不安装接口支架 6， 对耳声发射检测仪进行标定， 则采 用 1英寸的标准传声器， 即***对于 1/2英寸和 1英寸标准传声器二者均适用， 具有通用性。
所述 2 cm3耦合腔 4的输入端接口 3的尺寸为 1/2英寸。 ***不安装耳机支 架 2时，***用 1/2英寸标准传声器来标定仿真电子耳蜗声接收与输出部分 8与 仿真电子耳蜗电气接口部分 9结合起来的部分。
所述 2 cm3耦合腔 4、 接口支架 6和仿真电子耳蜗发声部分 8组合后固定安 装在***支架 7内。
本发明声输入口固定扣 1与 2 cm3耦合腔 4的输入端接口 3连接， 以达到固 定两者所构成的腔体内包含耳机支架 2的作用； 耳机支架 2可根据实际采用的 耳机型号不同进行更换， 用于输入耳声发射检测仪的剌激声， 以进行下一步检 测工作。
本发明中采用的 2 cm3耦合腔 4是符合 IEC 60318-5标准的仿真耳， 接口支 架 6尺寸符合标准测量用传声器的尺寸， 连接仿真电子耳蜗后可在不破坏仿真 耳特性的情况下完成测量。
2 cm3耦合腔 4的输出端接口 5与接口支架 6连接； 仿真电子耳蜗与接口支 架 6连接， 并通过 O型圈实现密封， 用于检测仿真电子耳蜗发出的刺激声回声。
***各部分组合完成后， 通过 2 cm3耦合腔 4的输入端接口 3和 2 cm3耦合 腔 4的输出端接口 5安装于接口支架 6上， 方便测量时的操作。
图 3是本发明的工作流程图， 耳声发射检测仪发出刺激声信号后， 通过入 耳式耳机传入到 2 cm3耦合腔 4内后由仿真电子耳蜗的探头接收到，驱动仿真电 子耳蜗声接收与输出部分 8产生刺激声耳声回声的弱小信号以及模拟环境噪声 的白噪的混合声信号， 为进行耳声发射检测仪的校准， 仿真电子耳蜗声接收与 输出部分 8发出的周期性耳声发射信号可传出并记录下来。
仿真电子耳蜗声接收与输出部分 8产出耳声周期信号的同时， 会产生同步 检测信号， 同步累计器检测到该同步检测信号后开始检测仿真电子耳蜗发出的 耳声周期性信号， 每检测到一次同步检测信号就采集一次耳声周期性信号， 耳 声周期性信号经过传感器、 调制解调器处理后变成电信号传入到同步累计器中， 经同步累积处理后输出仿真电子耳蜗发出的耳声， 经过处理的信号可有效去除 环境中的白噪声， 保证输出信号的完整性和有效性， 用来进行***的校准。

Claims

权 利 要 求 书
1.一种耳声发射仿真测试***，其特征在于： 声输入口固定扣（1 )与 2 cm3 耦合腔 （4) 的输入端接口 （3 ) 相连， 二者形成一个腔体， 耳机支架 （2) 固定 安装在所述腔体中； 2 cm 3耦合腔 （4 ) 的输出端接口 （5 ) 与接口支架 （6) 的 一端通过 O型圈密封连接； 接口支架（6)的另一端与仿真电子耳蜗声接收与输 出部分 （8) 相连； 仿真电子耳蜗声接收与输出部分 （8) 与仿真电子耳蜗电气 接口部分 （9) 相连， 构成仿真电子耳蜗。
2.根据权利要求 1所述的一种耳声发射仿真测试***， 其特征在于： 所述 2 cm3耦合腔 （4) 为符合 IEC 60318-5标准的仿真耳， 用来定标。
3.根据权利要求 1所述的一种耳声发射仿真测试***， 其特征在于： 所述 仿真电子耳蜗声接收与输出部分 （8) 与接口支架 （6) 连接的部分， 其尺寸与 测量用 1/2英寸标准传声器的尺寸相同， 仿真电子耳蜗声接收与输出部分 （8) 与仿真电子耳蜗电气接口部分 （9) 结合起来， 在仿真耳中， 与测量用 1/2英寸 标准传声器互换， 实现对耳声发射检测仪定标的目的。
4. 根据权利要求 1所述的一种耳声发射仿真测试***， 其特征在于： 所述 的 2 cm3耦合腔（4) 的输出端接口 （5) 的尺寸为 1英寸， 与测量用 1英寸标准 传声器互换。
5. 根据权利要求 1所述的一种耳声发射仿真测试***， 其特征在于： 所述 2 cm3耦合腔 （4) 的输入端接口 （3 ) 的尺寸为 1/2英寸。
6. 根据权利要求 1所述的一种耳声发射仿真测试***， 其特征在于： 所述 2 cm3耦合腔 （4)、 接口支架 （6) 和仿真电子耳蜗发声部分 （8) 组合后固定安 装在***支架 （7) 内。
PCT/CN2012/001495 2012-11-06 2012-11-06 一种耳声发射仿真测试*** WO2014071537A1 (zh)

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