WO1999046955A1 - Ecouteur-microphone place dans l'oreille a capteur de vibrations - Google Patents

Ecouteur-microphone place dans l'oreille a capteur de vibrations Download PDF

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Publication number
WO1999046955A1
WO1999046955A1 PCT/CN1999/000033 CN9900033W WO9946955A1 WO 1999046955 A1 WO1999046955 A1 WO 1999046955A1 CN 9900033 W CN9900033 W CN 9900033W WO 9946955 A1 WO9946955 A1 WO 9946955A1
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WO
WIPO (PCT)
Prior art keywords
vibration
ear canal
sound
vibration pickup
receiver
Prior art date
Application number
PCT/CN1999/000033
Other languages
English (en)
French (fr)
Inventor
Hao Chen
Xinli Qi
Original Assignee
Hao Chen
Xinli Qi
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 Hao Chen, Xinli Qi filed Critical Hao Chen
Priority to AU27103/99A priority Critical patent/AU2710399A/en
Publication of WO1999046955A1 publication Critical patent/WO1999046955A1/zh

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/19—Arrangements of transmitters, receivers, or complete sets to prevent eavesdropping, to attenuate local noise or to prevent undesired transmission; Mouthpieces or receivers specially adapted therefor
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/04—Supports for telephone transmitters or receivers
    • H04M1/05—Supports for telephone transmitters or receivers specially adapted for use on head, throat or breast
    • 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
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1016—Earpieces of the intra-aural type
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
    • H04R2201/10—Details of earpieces, attachments therefor, earphones or monophonic headphones covered by H04R1/10 but not provided for in any of its subgroups
    • H04R2201/107—Monophonic and stereophonic headphones with microphone for two-way hands free communication

Definitions

  • the present invention relates to a telephone communication device, and more particularly, to an integrated ear canal transmitter and receiver with a vibration pickup for mobile communication, which is free from hand-held.
  • the working principle of a pick-up microphone is that when a person speaks, the vocal cords vibrate to emit sound and cause the vibration of human tissues.
  • the pick-up sensor picks up these vibrations as a sound signal source. Since the vibration pick-up sensor is not sensitive to the sound waves in the surrounding air medium, but only sensitive to the vibrations of the human tissues that it contacts, the vibration-sensing microphone has better resistance to environmental noise, while also avoiding ordinary microphones. Howling sounds when the surrounding air is flowing fast, a problem called "wind cut sound".
  • Common pick-up microphones are overhead, laryngeal, and ear canal.
  • the overhead type is to place the vibration pick-up sensor on a helmet or other place and contact the top of a person's head to pick up the vibration signal.
  • Various inconveniences have led to the design of the throat knot microphone, which presses the vibration sensor on the throat knot with an elastic collar to pick up the vibration signal.
  • the obvious disadvantage of the laryngeal knot microphone is that it is unsightly to wear, and the neck is pressed against the neck blood vessels for a long time, which may cause discomfort to the user.
  • people have developed an ear canal microphone, which solves the above problems better, and can thus integrate the microphone and the receiver, so that it can be placed in the ear canal.
  • the shell of the product is made of hard material to facilitate the transmission of vibration and facilitate the pickup of vibration signals.
  • the microphone is equipped with a complete sound processing circuit and comes with its own power supply. One of the functions of the circuit is to filter to solve the problem of poor voice recognition; the second is to amplify to solve the problem that the output signal of the sensor is too weak.
  • the speaker's sound hole is lined with a hose.
  • the present invention provides an integrated ear canal type transmitter and receiver with a vibration pickup, which includes a housing with a detachable front sleeve adapted to the shape of the ear canal, a sound processing circuit, and a
  • the housing is provided with a vibration pickup of a vibration sensor connected to a signal line, a speaker, a sound transmission cavity and a wire connected to the speaker, wherein: a.
  • a weight is provided on the sensor to increase the amplitude, and There is a convex vibration pickup block for picking up sound and vibration signals on the outside;
  • an anti-resonance structure is provided on the inner wall of the sound transmitting cavity
  • the shell is made of soft material.
  • the counterweight is preferably fixed on the strip sensor near the end.
  • the vibration pickup block may be made integral with the casing, or may be fixed on the casing and contact the casing.
  • the sound processing circuit preferably uses a field effect tube to perform impedance conversion on the signal input through the pickup and outputs the signal.
  • the front cover is preferably snap-fitted to the housing.
  • the soft material used for the casing is preferably silicone and similar materials, and most preferably silicone.
  • the anti-resonance structure is preferably provided with a plurality of protrusions or vibration absorption holes on an inner wall of the sound transmission cavity.
  • the casing is preferably made of a hard material that is not easily deformed.
  • the invention can be widely applied to mobile communication devices such as handheld mobile phones, vehicle-mounted mobile phones and walkie-talkies. It can be known from the foregoing invention solution that the present invention uses the human body vibration pickup as a signal source, and does not feel the sound wave vibration in the air, and the entire housing is made of a soft material.
  • the vibration sensor only obtains signals from the ear canal wall through the vibration pickup block, and All other contacts with the ear canal are made of soft material. Because the soft material has vibration isolation, the obtained signal itself does not produce mixing, there is no phase difference, so no circuit processing is needed, so the distortion is small. , The sound quality is high, it feels kind, and there is no huge auxiliary circuit, which makes the entire device compact and has a good ability to resist environmental noise.
  • the original resonant cavity eliminates the resonance point that originally caused self-excitation, so it can talk freely under duplex conditions without self-excitation.
  • the present invention integrates the transmitter and the receiver and can be placed in the ear canal, so the structure is simple and easy to carry, and the electrical characteristics interchangeable with the electret microphone can be achieved without any auxiliary circuit.
  • the soft shell makes it comfortable to wear and has good adaptability to different size ear canals.
  • Fig. 1 is a perspective view of the overall structure of an integrated ear canal type transmitter and receiver with a vibration pickup according to the present invention.
  • Fig. 2 is a structural diagram of a vibration pickup of the present invention.
  • 3 is a structural diagram of a vibration sensor of the present invention.
  • Fig. 4 is a schematic diagram of the structure of a sound transmitting cavity of the present invention.
  • Fig. 5 is a side sectional view of a preferred embodiment of the present invention.
  • Fig. 6 is a top sectional view of a preferred embodiment of the present invention.
  • the preferred embodiments of the present invention are given below with reference to the drawings. Examples
  • the structure of the integrated ear canal transmitter and receiver with a vibration pickup is shown in FIG. 5 and FIG. 6.
  • the present invention includes a housing 1 , A sound processing circuit 2, a vibration pickup 3, a speaker 4, a sound transmitting cavity 5 and a lead 6.
  • the shell 1 is made of silicone with excellent flexibility and strength, and its shape matches the shape of the human ear canal. It is composed of the shell body 1 and the front cover 11.
  • the housing body is used to place various components.
  • the front cover is It is curved so as to catch the ear canal, so that the entire receiver is not easy to fall off.
  • the front cover has an acoustic hole 111 at the end, and the front cover is connected to the casing by a buckle 12, so that the jacket can be easily removed for cleaning. After wearing, the front sleeve is blocked by ear secretions.
  • the sound processing circuit 2, the pickup 3, and the speaker 4 are arranged in the housing in the longitudinal direction.
  • Hard rubber encapsulates and fixes each of the above components in a housing. The casing after the above components are fixed is adhered at the casing adhesive surface 13.
  • the sound processing circuit 2 uses only one field-effect tube to connect to the pickup 3 through the signal line 33, and performs impedance conversion on the sound signal inputted through the pickup 3, and then outputs the sound signal through the wire 6.
  • the vibration pickup 3 is a core component of the present invention, and its structure is shown in FIG. 2.
  • the vibration sensor 32 is fixed in a casing 31 by a plastic fixing sleeve 34.
  • the casing 3 1 is made of a hard material that is not easily deformed.
  • the housing 31 is made of a metal tube, and the structure of the sensor 32 is shown in FIG. 3. It uses a commercially available bi-piezoelectric ceramic vibration sensor, and its shape is long.
  • weights 321 that can increase the amplitude are adhered.
  • the weights can be made of metal materials such as copper and steel.
  • the other end portion of the sensor 32 is connected to a signal line 33.
  • a convex pick-up block 322 for picking up sound and vibration signals is welded near the end of the case 31, and the pick-up block ⁇ is made of the same material as the case 31 described above.
  • Speaker 4 It is connected to the mobile communication terminal via a wire, and a sound transmitting cavity 5 is connected to the sound output hole 41 of the speaker.
  • a plurality of irregularly distributed protrusions 51 are provided on the inner wall of the sound transmitting cavity 5, so that the resonance of the sound wave is artificially disturbed and eliminated. Its principle and structure are shown in Figure 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Telephone Set Structure (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Headphones And Earphones (AREA)

Description

带有振动拾音器的一体化耳道式送、 受话器 本发明领域
本发明涉及一种电话通讯装置，更具体地说是涉及一种移动通讯用 的， 使其免于手提的带有振动拾音器的一体化耳道式送、 受话器。 本发明背景技术
在通讯用的高抗噪声送话器中，常见的有指向性麦克风及拾振式麦 克风等几类。其中拾振式麦克风的工作原理是:当人说话时，在声带振动 发出声音的同时， 引起人体组织的振动， 拾振传感器拾取这些振动作为 声音信号源。 由于拾振式传感器对周围空气介质中的声波不敏感， 而只 对与其接触的人体组织的振动敏感， 因此， 振动传感式麦克风就具有更 优良的抗环境噪声能力， 同时也避免了普通麦克风在周围空气快速流动 时发出啸叫声， 即所谓 "风切音" 的问题。 常见的拾振式麦克风有头顶 式、 喉结式、 耳道式等。 头顶式是把拾振传感器放在头盔上等地方， 与 人头顶接触来拾取振动信号。 其种种不便促使人们设计出喉结式麦克 风， 它是把振动传感器用一个弹性项圈压在喉结上以拾取振动信号。 喉 结式麦克风的明显不足则是佩戴不美观， 而且项圈长期压迫颈部血管会 引起使用者不适。 为了克服上述拾振式麦克风的不足， 人们研究出了耳道式麦克风， 它较好地解决了上述问题， 并由此可以把送话器与受话器合为一体， 使 其可放入耳道中去， 以避免送受话器尺寸太大， 不宜携带等问题。 耳道 式送受话器在出现后的近十年中一直未得到广泛应用， 其主要原因是未 能解决好声音的识别问题， 声音中有很重的混音。 直到近年， 才有国外 的实用性产品面世。 该产品的外壳采用硬质材料， 以利于振动的传导， 便于拾取振动信号。 拾振送话器附带有完全的声音处理电路， 并自带电 源。 电路的作用一是滤波， 以解决声音识别性不好的问题;二是放大， 以 解决传感器输出信号太弱的问题。 在其扬声器的传声孔中衬有软管， 用 于减振以解决双工时的自激问题。 该产品的出现虽然是个很大的进步， 但它仍有一些不足。 由于其整个外壳都采用硬质材料， 因此耳道内不同 方向的振动都会传到传感器上， 而不同方向的振动相位是有差别的， 于 是就会产生混音， 使得到的声音识别性不好。 为解决此问题， 现有产品 采用了电路处理的办法， 把中低频混音较厉害的频段用高通滤波器滤 掉， 只留下声音识别性较好的中高频段信号。 这样做需要有较完整的处 理电路， 而且不可避免地要产生失真， 使音质发尖， 不亲切。 同时， 为 了克服双工时会引起系统自激的问题， 现有产品采用嵌套软管以减振， 但还是常常能听到回声， 严重时会产生啸叫声。 本发明概述
本发明的目的在于克服现有技术的上述不足，而提供一种性能更加 优良的耳道式送、 受话器。 为实现上述目的，本发明提供了一种带有振动拾音器的一体化耳道 式送、 受话器， 它包括一个与耳道形状相适应的具有可拆卸前套的外 壳， 一个声音处理电路， 一个在壳体内装有与信号线相连的振动式传感 器的振动式拾音器， 扬声器， 与扬声器相连的传声腔和导线， 其中： a、 在传感器上设有一个可使振幅增加的配重， 并且在壳体外部设 有一个用于拾取声音振动信号的凸状拾振块；
b、 在传声腔的内壁上具有防谐振结构；
c、 所述的外壳由软体材料制成。 所述的配重优选固定于条状传感器上靠近端部处。 所述拾振块可以与壳体制成一体， 也可以固定于外壳上， 且与壳体 相接触。 所述声音处理电路优选用一个场效应管将通过拾音器输入的信号 进行阻抗转换后输出。 所述前套优选与外壳为卡扣式连接。 所述外壳所用的软体材料优选为硅胶以及类似的材料，最好选用硅 胶。 所述防谐振结构优选是在传声腔内壁上设有多个凸起或吸振孔。 所述壳体优选由不易变形的硬质材料制成。 本发明可广泛适用于手持式移动电话，车载移动电话以及对讲机等 移动通讯装置。 由上述发明方案可知， 本发明由于利用人体振动拾取作为信号源， 而不感受空气中的声波振动， 且整个外壳由软体材料制成， 振动传感器 只通过拾振块从耳道壁取得信号， 而其它所有与耳道接触处都是软性材 料， 由于软性材料具有隔振作用， 因而所取得的信号本身就不产生混 音， 没有相位差别， 因此也就不需要电路处理， 所以失真很小， 音质还 原度高， 给人感觉亲切， 更无庞大的辅助电路， 使整个装置结构紧凑， 并具有很好的抗环境噪声能力;由于在传声腔中设置了多个凸起，有意识 地破坏了原来的谐振腔， 消除了原来引起自激的谐振点， 因而可在双工 条件下自由通话， 而无自激现象。 本发明将送、 受话器制成一体， 且可 置于耳道中， 因此结构简单， 便于携带， 无需任何辅助电路便可达到与 驻极体麦克风互换的电特性。 柔软的外壳使佩戴舒适， 对不同大小耳道 有较好的适应性。 附图的简要说明
图 1是本发明的带有振动拾音器的一体化耳道式送、受话器的整体 结构透视图。
图 2是本发明的振动式拾音器结构图。 3是本发明的振动式传感器结构图。
图 4是本发明的传声腔结构原理图。
图 5是本发明的优选实施例侧剖视图。
图 6是本发明的优选实施例俯视剖视图。 下面结合附图给出本发明的优选实施例。 实施例
在本发明的优选实施例中， 带有振动拾音器的一体化耳道式送、受 话器结构如附图 5、 附图 6所示， 结合图 1所显示的整体结构图可知， 本发明包括外壳 1， 声音处理电路 2， 振动式拾音器 3， 扬声器 4， 传 声腔 5和导线 6。 外壳 1选用柔软性及强度倶佳的硅胶注塑而成， 其外 形与人的耳道形状相适应， 它由外壳主体 1和前套 11两部分组成， 外 壳主体内用于放置各部件， 前套呈弯曲状， 以便勾住耳道， 使整个送受 话器不易脱落， 前套端部有一个出声孔 111 ， 前套与外壳由卡扣 12相 连， 使得外套可以很容易地取下， 以便清洗由于长期佩戴后被耳内分泌 物堵塞的前套出声孔。 如附图 1所示， 声音处理电路 2、 拾音器 3、 扬 声器 4沿纵向设置于外壳内， 为使各部件能相对固定， 并使得外壳不致 于因受压而变形， 在优选实施例中， 采用硬橡胶将上述各部件封装固定 在外壳内。 固定好上述部件后的外壳在外壳粘合面 13处粘合。 本例中， 声音处理电路 2仅采用一只场效应管通过信号线 33与拾音器 3相连， 由其对经拾音器 3输入的声音信号进行阻抗变换后再经导线 6输出。 振 动式拾音器 3是本发明的核心部件， 其结构如图 2所示， 它是在壳体 31 内通过塑料固定套 34固定有振动传感器 32， 壳体 3 1 由不易变形的硬 质材料制成， 以更有效地传导振动， 在优选实施例中， 壳体 31 是由金 属管制成， 传感器 32结构如图 3所示， 它采用市售的双压电陶瓷振动 传感器， 其外形呈长条状， 在其端部两侧粘接有可使振幅增加的配重 321， 该配重可采用铜、 钢等金属材料， 传感器 32的另一端端部连接有 信号线 33。 壳体 31外靠近端部焊接有一个用于拾取声音振动信号的凸 状拾振块 322， 该拾振块釆用与上述壳体 31相同的材料。上述扬声器 4 经导线与移动通讯终端相连， 在扬声器的出声孔 41处连接有传声腔 5 。 为消除声音通过传声腔时所产生的自激， 在传声腔 5的内壁上设有多个 不规则分布的凸起 51 ， 使得声波的谐振被人为打乱并消除。 其原理及 结构如图 4所示。

Claims

权利要求
1. 一种用于移动通讯的带有振动拾音器的一体化耳道式送、 受话 器， 包括一个与耳道形状相适应的具有可拆卸前套 (11)的外壳 (1)， 一个 声音处理电路 (2)， 一个在壳体 (31)内装有与信号线 (33)相连的振动式传 感器 (32)的振动式拾音器 (3)， 扬声器 (4)， 与扬声器相连的传声腔 (5)和导 线 (6)， 其特征在于：
a、 所述的传感器 (32)上设有一个可使振幅增加的配重 (321)， 并且 在壳体 (31)外部设有一个用于拾取声音振动信号的凸状拾振块 (322); b、 在所述传声腔 (5)的内壁上具有防谐振结构；
c、 所述的外壳 (1)由软体材料制成。
2. 根据权利要求 1 所述的带有振动拾音器的一体化耳道式送、 受 话器， 其特征在于， 所述的配重 (321)固定于条状传感器 (32)上靠近端部 处。
3. 根据权利要求 1 所述的带有振动拾音器的一体化耳道式送、 受 话器， 其特征在于所述的拾振块 (322)可以与壳体 (31)制成一体， 也可以 固定于外壳 (1)上， 且与壳体 (31)相接触。
4. 根据权利要求 1 所述的带有振动拾音器的一体化耳道式送、 受 话器，其特征在于，所述的声音处理电路 (2)用一个场效应管将拾音器 (3) 输入的信号进行阻抗转换后输出。
5. 根据权利要求 1 所述的带有振动拾音器的一体化耳道式送、 受 话器， 其特征在于， 所述的前套 (11)与外壳 (1)为卡扣式连接。
6. 根据权利要求 1 所述的带有振动拾音器的一体化耳道式送、 受 话器， 其特征在于， 所述的外壳用的软体材料为硅胶以及类似的材料。
7. 根据权利要求 1 所述的带有振动拾音器的一体化耳道式送、 受 话器， 其特征在于， 所述的防谐振结构是在传声腔内壁上设有多个凸起 (51)或吸振孔。
PCT/CN1999/000033 1998-03-10 1999-03-10 Ecouteur-microphone place dans l'oreille a capteur de vibrations WO1999046955A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU27103/99A AU2710399A (en) 1998-03-10 1999-03-10 Ear-integrated earphone-microphone with a vibration sensor

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CN1142671C (zh) * 2001-08-11 2004-03-17 陈皞 高抑制反馈的耳道式一体化送、受话器
CN101217828B (zh) * 2007-01-04 2011-10-12 财团法人工业技术研究院 噪音抑制装置与方法
CN102045627B (zh) * 2009-10-09 2012-11-28 岳凡恩 收音装置及使用其的电子装置
CN103347225A (zh) * 2013-05-15 2013-10-09 重庆帅能科技有限公司 耳道麦克风
CN104581467A (zh) * 2013-10-11 2015-04-29 孙文宗 耳机麦克风、应用其的语音撷取方法与通讯方法
CN103686498B (zh) * 2013-11-28 2017-12-19 青岛歌尔声学科技有限公司 一种降噪通话装置
CN105979445B (zh) * 2016-06-29 2021-05-07 歌尔股份有限公司 扬声器
CN108305610B (zh) * 2018-03-23 2024-02-20 苏州登堡电子科技有限公司 分体式振壁传声装置
CN112511948B (zh) * 2021-02-08 2021-06-11 江西联创宏声电子股份有限公司 耳机
CN113275225A (zh) * 2021-05-19 2021-08-20 王勇 一种彩色声管加工方法

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JPH0993153A (ja) * 1995-09-26 1997-04-04 Sanyo:Kk 携帯電話機用のイヤーマイクロホン

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CN1061197C (zh) 2001-01-24
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