WO2003015465A1 - Emetteur et recepteur telephoniques auriculaires a retroaction elevee supprimee - Google Patents

Emetteur et recepteur telephoniques auriculaires a retroaction elevee supprimee Download PDF

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Publication number
WO2003015465A1
WO2003015465A1 PCT/CN2002/000556 CN0200556W WO03015465A1 WO 2003015465 A1 WO2003015465 A1 WO 2003015465A1 CN 0200556 W CN0200556 W CN 0200556W WO 03015465 A1 WO03015465 A1 WO 03015465A1
Authority
WO
WIPO (PCT)
Prior art keywords
receiver
microphone
damping material
vibration
transmitter
Prior art date
Application number
PCT/CN2002/000556
Other languages
English (en)
Chinese (zh)
Inventor
Hao Chen
Original Assignee
Hao Chen
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 filed Critical Hao Chen
Publication of WO2003015465A1 publication Critical patent/WO2003015465A1/fr

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Classifications

    • 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
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/45—Prevention of acoustic reaction, i.e. acoustic oscillatory feedback
    • H04R25/456—Prevention of acoustic reaction, i.e. acoustic oscillatory feedback mechanically

Definitions

  • the present invention relates to communication transmitters and receivers, and in particular to an ear canal-type integrated transmitter and receiver with high suppression feedback for duplex communication. Background technique
  • Pick-up microphones are also called bone-conducting microphones. Their working principle is: When a person speaks, when the vocal cords vibrate and emit sound waves, they also cause vibrations in human tissues. The vibration pickup sensor picks up these vibrations as a source of acoustic signals. Since the vibration pick-up sensor is not sensitive to the sound waves in the surrounding air medium, but is more sensitive to the vibration of the human tissues in contact with it, the vibration pickup microphone has better resistance to environmental noise. According to the difference of human body parts picked up by vibration, the pick-up microphone type is further divided into the head type, the throat type, and the ear canal type.
  • Overhead and laryngeal knots are often used in military and police departments. Their main disadvantage is that they are neither beautiful nor convenient to wear. Among them, the laryngeal knot microphone is pressed against a person's neck, so wearing it for a long time will cause users Overhead microphones are infrequently used because of the need to wear a helmet.
  • ear canal microphones which better solve the above problems.
  • the vibration pickup point of the ear canal microphone is in the human ear canal, and thus the microphone and the receiver can be integrated into the ear canal and thus have both functions of listening and speaking.
  • the applicant disclosed in the Chinese invention patent 98106573 an above-mentioned ear canal transmitter and receiver.
  • the subject matter of the invention is "integral ear canal transmitter and receiver with vibration pickup".
  • the shell made of adaptable soft material and the vibration type microphone and receiver connected with the wire Among them, the vibrating microphone uses piezoelectric ceramics as a sensor, and a cantilever beam structure is used to fix the fixed end on the rear end of the sensor.
  • a mass block (weight) is provided on the front end of the sensor to amplify the signal, and the sensor converts the vibration signal
  • An electrical signal is output and processed by an impedance matching circuit.
  • the exterior of the sensor is a housing, and a vibration confirmation notebook is provided on the housing.
  • the biggest feature of the above-mentioned transmitter and receiver is that the signal is mechanically processed, which greatly improves the sound quality. Because when people talk, the vibration of the human tissue caused by the vocal cord vibration will propagate in all directions, and thus reach different parts of the ear canal in different directions, and the vibration phase is also different. If all of them are received, a mixing will occur, making the The sound quality and recognition are not good.
  • the convex vibration pickup block is made of hard material, so that the vibration signal of the vibration pickup part in the ear canal can be transmitted as much as possible, and the shell is made of soft material. Since the soft material has the effect of reducing vibration, it can make other parts The incoming signal is weakened as much as possible, so that the sound quality of the sound is high and the distortion is small.
  • the vibration pickup and the receiver are put together, in the state of Chinese workers who are talking and listening at the same time, the vibration emitted by the receiver when it is uttered will be picked up by the vibration pickup, which will generate feedback, resulting in echo or even howling during a call
  • the ability of the shell made of soft material to dampen vibration can also play a role in suppressing feedback.
  • the shell made of soft material has better adaptability to people's ear canals of different sizes, and can also make it comfortable to wear.
  • the elasticity of the shell made of soft material is limited. When the ear canal of the user is small, it cannot fully adapt, and it will make the user uncomfortable.
  • the present invention is to solve many problems existing in the existing ear canal type transmitter and receiver, and provides an ear canal type integrated transmitter and receiver having high suppression feedback ability.
  • the ear canal type integrated microphone and receiver with high suppression feedback of the present invention includes a microphone component composed of a sensor, a convex vibration pickup and a sound processing circuit, and a microphone component composed of a speaker and a sound tube connected to the microphone component.
  • the high-damping material uses foam plastic or foam rubber
  • the shell is a thin shell made of a silicon-based polymer material.
  • the contribution of the present invention is that, because the highly damping material is used as the filling material, it not only plays a role of fixing the components of the transmitter and the receiver, but also more importantly, isolates the components from each other by the highly damping material, and through its good vibration reduction The performance reduces the vibration signals from the receiver and the sound pipe as much as possible, effectively suppressing the feedback during the duplex operation, so that howling and echo can be better eliminated. Because the microphone is isolated from the housing with a high-damping material, the transmission of interference signals can be minimized to improve the sound quality. Also, because the high-damping material used has a good deformation ability, the protruding height of the convex vibration pickup can be adaptively adjusted according to the shape of the ear canal, making it more comfortable to wear. In addition, since the shell is made of silicone and similar materials, the shape is determined, the surface of the shell is smooth, and the affinity with human tissue is good, so it is comfortable to carry. BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a schematic diagram of the present invention.
  • Fig. 2 is a sectional view of a structure of the present invention.
  • FIG. 3 is a schematic structural diagram of a microphone component of the present invention.
  • FIG. 4 is a schematic structural diagram of a receiver assembly according to the present invention.
  • Fig. 5 is a perspective view showing the structure of the present invention. detailed description
  • the ear canal integrated receiver and receiver with high suppression feedback of the present invention includes The microphone assembly 10, the microphone assembly 20, the housing 30, and the wire 40, wherein the microphone assembly 10 is composed of a sensor 11, a convex vibration pickup block 12, and a sound processing circuit 13.
  • the sensor is a piezoelectric ceramic sensor, which is longitudinally disposed on the Inside the casing, one end is fixed, and is connected to the lead wire 40 after the sound processing circuit 13, and the other end is a free end, forming a cantilever beam structure.
  • a mass (weight) can be provided at the cantilever end 14, so that the amplitude can be increased to amplify the signal .
  • the front end of the convex vibration pickup block 12 protrudes from the hole 31 on the casing 30, and directly contacts the ear canal to pick up the vibration signal.
  • the vibration pickup is made of a hard material to effectively transmit vibration.
  • the sound processing circuit 13 is an impedance matching circuit. One end of the sound processing circuit 13 is connected to a fixed end of the sensor, and the other end is connected to an external device through a wire 40. It is output via the lead 40.
  • the receiver assembly is composed of a field speaker 21 and a sound guide tube 22 connected thereto.
  • the speaker 21 is a miniature speaker, which is arranged laterally at the top end of the casing and is connected to external equipment through a wire 40.
  • a sound guide tube 22 is connected to the loudspeaker, which extends to the front outlet of the transmitter and receiver, and can export the voice received from the loudspeaker to the ear canal of the user.
  • Said shell 30 is a thin shell made of a silicon-based polymer material, such as silica gel, and the shape is adapted to the shape of the human ear canal.
  • the shell made of such materials has a smooth surface and affinity with human tissues. Good sex, non-toxic, strong material and so on.
  • a hole is provided at the end of the casing for the wire to pass through, and the other end is also provided with a hole for transmitting the sound sent by the sound guide tube.
  • a lateral middle portion of the casing is provided with a protrusion for the convex vibration pickup block 12 to protrude. ⁇ 31 ⁇ Hole 31.
  • One end of the wire 40 is connected to the microphone component and the receiver component, and the other end is connected to an external device for transmitting signals.
  • the above structure is basically the same as the prior art, and the gist of the present invention is to overcome the problem that in a duplex state in which speaking and listening are performed at the same time, the vibration emitted by the receiver when it is sounded is picked up by the vibration pickup, so that feedback is generated, resulting in There is a problem of echo or even howling.
  • the microphone assembly 10 and the microphone assembly 20 are separated by a high damping material 50.
  • the microphone and the housing are also completely separated by the high damping material 50.
  • the receiver assembly may or may not be separated from the housing by a highly damping material.
  • the high damping material is the key to solving the problem, it should have good vibration damping performance and deformation ability, and it should also have slow rebound characteristics to adapt to different ear canals and extend its service life.
  • This high-damping material can be selected from foam plastics, such as polyvinyl chloride foam, polystyrene foam, and urea foam Polyfoam, polyurethane foam, etc. are preferred in this example.
  • Foam rubber which is a vulcanized rubber with a sponge-like porous structure, can also be selected. You can choose the right commercially available product according to your needs.
  • the above-mentioned high damping material may be filled between the microphone component and the microphone component, and between the microphone component and the casing, so as to reduce vibration and fix components.
  • the convex portion of the convex vibration pickup block protrudes from the hole 31 on the housing 30.
  • noise may be generated. It is kept away from the wall of the hole.
  • the measure is to make the diameter of the hole 31 in the housing 30 larger than the external size of the convex pickup block, and also use a high damping material between the edge of the hole 31 and the convex pickup block. Separated.
  • the ear canal transmitter and receiver have better sound quality, are more convenient and comfortable to wear, and the most important thing is that there is basically no echo, which can meet the requirements of civil duplex communication.

Abstract

L'invention concerne un émetteur et un récepteur auriculaires utilisés lors d'une communication et dotés d'une rétroaction élevée supprimée . Ils se composent d'une unité de transmission (10) comprenant un transducteur (11), un élément capteur similaire à une protubérance (12) et un circuit de traitement sonore (12), d'une unité de réception (20) comportant un haut-parleur (21) et un tube de transfert sonore (22) connecté au haut-parleur, d'un boîtier (30) logé dans un conduit auriculaire et d'un fil (40) connecté aux unités de transmission et de réception. L'émetteur et le récepteur de cette invention sont caractérisés en ce que l'unité de transmission (10) et le récepteur sont isolés par le biais d'une matière d'atténuation sonore élevée, et au moins l'émetteur et le boîtier sont isolés par l'intermédiaire d'une matière d'atténuation sonore élevée, une portion de l'élément capteur similaire à une protubérance ressort du trou (31) du logement (30) et ledit élément étant isolé par une paroi du trou. On peut ainsi diminuer le signal de vibration émanant de l'unité de réception, comme l'atténuation des vibrations repose sur une matière d'atténuation sonore élevée, et réduire considérablement la rétroaction du duplexage. On peut alors éliminer les sifflements et l'écho, réduire les signaux de bruit, améliorer la qualité sonore et apporter un certain confort.
PCT/CN2002/000556 2001-08-11 2002-08-09 Emetteur et recepteur telephoniques auriculaires a retroaction elevee supprimee WO2003015465A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNB01125615XA CN1142671C (zh) 2001-08-11 2001-08-11 高抑制反馈的耳道式一体化送、受话器
CN01125615.X 2001-08-11

Publications (1)

Publication Number Publication Date
WO2003015465A1 true WO2003015465A1 (fr) 2003-02-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2002/000556 WO2003015465A1 (fr) 2001-08-11 2002-08-09 Emetteur et recepteur telephoniques auriculaires a retroaction elevee supprimee

Country Status (2)

Country Link
CN (1) CN1142671C (fr)
WO (1) WO2003015465A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8194875B2 (en) 2002-09-11 2012-06-05 Innotech Pty Ltd Communication apparatus and helmet
WO2014039243A1 (fr) * 2012-09-10 2014-03-13 Apple Inc. Transducteur de capture par conduction osseuse pour applications microphoniques

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102045627B (zh) * 2009-10-09 2012-11-28 岳凡恩 收音装置及使用其的电子装置
CN105308939B (zh) * 2013-05-07 2019-04-26 诺基亚技术有限公司 减小的声学耦合
CN115314822B (zh) * 2022-07-25 2023-05-16 杭州爱听科技有限公司 一种抑制数字传输助听器产生啸叫装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04172794A (ja) * 1990-11-07 1992-06-19 Hiroshi Ono 外耳道で骨伝導音声をピックアップする装置及び通話装置
JPH09331591A (ja) * 1996-06-11 1997-12-22 Mitsubishi Electric Corp 骨伝導型イヤホンマイク
CN1193236A (zh) * 1998-03-10 1998-09-16 陈皞 带有振动拾音器的一体化耳道式送、受话器

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04172794A (ja) * 1990-11-07 1992-06-19 Hiroshi Ono 外耳道で骨伝導音声をピックアップする装置及び通話装置
JPH09331591A (ja) * 1996-06-11 1997-12-22 Mitsubishi Electric Corp 骨伝導型イヤホンマイク
CN1193236A (zh) * 1998-03-10 1998-09-16 陈皞 带有振动拾音器的一体化耳道式送、受话器

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8194875B2 (en) 2002-09-11 2012-06-05 Innotech Pty Ltd Communication apparatus and helmet
WO2014039243A1 (fr) * 2012-09-10 2014-03-13 Apple Inc. Transducteur de capture par conduction osseuse pour applications microphoniques
US8983096B2 (en) 2012-09-10 2015-03-17 Apple Inc. Bone-conduction pickup transducer for microphonic applications

Also Published As

Publication number Publication date
CN1333623A (zh) 2002-01-30
CN1142671C (zh) 2004-03-17

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