CN115134732A - Narrow-band communication simulation mastoid for bone vibration test - Google Patents
Narrow-band communication simulation mastoid for bone vibration test Download PDFInfo
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- CN115134732A CN115134732A CN202210844052.1A CN202210844052A CN115134732A CN 115134732 A CN115134732 A CN 115134732A CN 202210844052 A CN202210844052 A CN 202210844052A CN 115134732 A CN115134732 A CN 115134732A
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- 210000000988 bone and bone Anatomy 0.000 title claims abstract description 68
- 210000001595 mastoid Anatomy 0.000 title claims abstract description 50
- 238000004088 simulation Methods 0.000 title claims abstract description 50
- 238000012360 testing method Methods 0.000 title claims abstract description 45
- 238000004891 communication Methods 0.000 title claims abstract description 22
- 238000003825 pressing Methods 0.000 claims abstract description 17
- 210000003625 skull Anatomy 0.000 claims abstract description 11
- 230000005540 biological transmission Effects 0.000 claims description 6
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- 239000000523 sample Substances 0.000 description 15
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- 238000013016 damping Methods 0.000 description 5
- 210000003128 head Anatomy 0.000 description 4
- 238000000034 method Methods 0.000 description 4
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- 229910000838 Al alloy Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
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- 208000031481 Pathologic Constriction Diseases 0.000 description 1
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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
- 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
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- General Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Neurosurgery (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
The invention relates to a narrow-band communication simulation mastoid for bone vibration test, which comprises a force application module, a base and a force coupler, wherein the force application module is connected with the base through a force coupler; the force application module comprises a lifting bracket and a pressing arm; the pressure arm is horizontally arranged; the pressure arm comprises a first end and a second end, the first end is fixedly connected with the lifting bracket, and the second end is used for fixing a sample to be detected; the force coupler comprises a coupler body, and a skin simulation element, a mastoid simulation element and a force sensor which are arranged in the coupler body; the skin simulation element is arranged at the top of the coupler body and fixes a sample to be detected together with the second end of the pressure arm; the force sensor and the mastoid simulation element are sequentially arranged below the skin simulation element, and the mass of the mastoid simulation element is consistent with that of the human skull; the base is fixed to the bottom of force coupler and lifting support. The device can accurately simulate the force impedance characteristic of the mastoid part of a human body, and can replace the real human body to finish bone vibration tests of a bone conduction hearing aid finished product, a bone conduction earphone finished product and a vibrator unit.
Description
Technical Field
The invention relates to the field of bone vibration tests, in particular to a narrow-band communication simulation mastoid for bone vibration tests.
Background
Hearing loss is a very common problem, and this phenomenon is more pronounced in the elderly population. Air conduction hearing aids are typically selected to improve hearing ability. However, some patients with otitis media sequelae, otosclerosis, external auditory canal stenosis caused by trauma and other patients who are not suitable for air conduction hearing aids exist, and the people in the category can only use the bone conduction hearing aids.
The principle of the bone conduction hearing aid is that sound signals are transmitted to mastoid parts of a human body in a vibration mode through a vibrator and are directly transmitted to inner ears through skull bones without passing through outer ears and middle ears.
At present, a whole set of test equipment for a bone conduction hearing aid consists of a closed sound insulation box (containing a sound production loudspeaker), a force coupler, a data processor and a display screen, wherein the bone conduction hearing aid is required to be arranged in the sound insulation box during testing, the sound production loudspeaker in the sound insulation box emits sound with certain frequency to be used as sound input of the bone conduction hearing aid, and the bone conduction hearing aid acquires sound signals through a microphone and then converts the sound signals into mechanical motion through a bone vibrator after amplification. The bone oscillator exerts certain dynamic force to the probe of force coupler, and the two compresses tightly the laminating, and the mechanical vibration of bone oscillator is received to the force coupler, converts vibration signal into voltage signal transmission for data processor again, and data processor carries out data analysis, shows the sound performance index of bone conduction hearing aid through the display screen display.
However, the existing force coupler cannot simulate the force impedance characteristics of the mastoid part of the skull, and the effect and the accuracy of the output of the test index are directly influenced.
In addition, sometimes it is necessary to implement some special test requirements, for example, a large number of sound performance indexes of the bone conduction hearing aid are required to be tested under the action of dynamic forces of different magnitudes, and the design parameters of the head clamping force of the bone conduction hearing aid are researched, which are difficult to implement by the conventional method at present.
Disclosure of Invention
The invention discloses a narrow-band communication simulation mastoid for bone vibration testing, and aims to solve the technical problems in the prior art.
The invention adopts the following technical scheme:
the application provides a narrow-band communication simulation mastoid for bone vibration testing, which comprises a force application module, a base and a force coupler;
the force application module comprises a lifting bracket and a pressing arm; the pressure arm is horizontally arranged and used for mounting weights and providing pressure in the vertical direction; the pressure arm comprises a first end and a second end, the first end is fixedly connected with the lifting bracket, and the second end is used for fixing a sample to be detected;
the force coupler comprises a coupler body, and a skin simulation element, a mastoid simulation element and a force sensor which are arranged in the coupler body; the skin simulation element is arranged at the top of the coupler body and fixes a sample to be tested together with the second end of the pressure arm; the force sensor and the mastoid simulation element are sequentially arranged below the skin simulation element, and the mass of the mastoid simulation element is consistent with that of the human skull;
the base is fixed to the bottom of force coupler and lifting support.
As a preferred technical scheme, the second end of the pressure arm comprises a pair of vertical and parallel downward-arranged support arms, and a buffer element is arranged below the two support arms and used for fixing a sample to be detected.
Preferably, the damping element comprises a damping rubber.
As preferred technical scheme, be equipped with the weight mounting between the first end of pressure arm and the second end, the weight mounting sets up vertically downwards.
Preferably, the coupler body comprises a sound insulating material.
As a preferred technical scheme, the coupler body comprises an SMA interface, and the SMA interface is connected with the force sensor.
As a preferred technical scheme, the skin simulation element comprises a vibration transmission rubber mat, and the vibration transmission rubber mat is used for transmitting the vibration quantity generated by the element to be tested into the force sensor; the vibration transmission rubber pad corresponds to the position of the buffer element.
As a preferred solution, the mastoid simulation element includes a weight having a mass of 3.5 kg.
As preferred technical scheme, lifting support and coupler body all vertically set up on the base.
As a preferred technical solution, the bottom of the base is provided with at least four shock-absorbing elements.
The technical scheme adopted by the invention can achieve the following beneficial effects:
the invention provides a narrow-band communication simulation mastoid for bone vibration test, which can accurately simulate the force impedance characteristic of a human mastoid part and can replace a real human body to finish the bone vibration test; through this device, can test bone conduction audiphone finished product, bone conduction earphone finished product and oscillator unit, its pressure arm has the design of two kinds of regulation static pressures, both can satisfy the experiment of the multiple static pressures in laboratory, can satisfy the demand of producing the fixed static pressure of line or QC again, guarantees the test uniformity many times.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below to form a part of the present invention, and the exemplary embodiments and the description thereof illustrate the present invention and do not constitute a limitation of the present invention. In the drawings:
FIG. 1 is a perspective view of a narrow-band communication simulated mastoid for bone vibration testing in a preferred embodiment of the present invention disclosed in example 1;
FIG. 2 is a top view of a narrow-band communication simulated mastoid for bone vibration testing in a preferred embodiment of the present invention as disclosed in example 1;
FIG. 3 is a cross-sectional view of a force coupler in a preferred embodiment disclosed in example 1 of the present invention;
description of reference numerals:
the device comprises a force application module 10, a lifting support 11, a pressing arm 12, a support arm 13, a buffer element 14, a level gauge 15 and a tension spring fixing piece 16; a force coupler 20, a coupler body 21, an SMA interface 22, a skin simulation element 23, a mastoid simulation element 24, a force sensor 25; a base 30, a damper spring 31; a tension spring 40.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the accompanying drawings. In the description of the present invention, it is noted that the term "or" is generally employed in its sense including "and/or" unless the content clearly dictates otherwise.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art. In addition, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not intended to indicate or imply relative importance.
It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to solve the problems in the prior art, the embodiment of the application provides a narrow-band communication simulation mastoid for bone vibration testing, which comprises a force application module, a base and a force coupler; the force application module comprises a lifting bracket and a pressing arm; the pressure arm is horizontally arranged and used for mounting weights and providing pressure in the vertical direction; the pressure arm comprises a first end and a second end, the first end is fixedly connected with the lifting bracket, and the second end is used for fixing a sample to be detected; the force coupler comprises a coupler body, and a skin simulation element, a mastoid simulation element and a force sensor which are arranged in the coupler body; the skin simulation element is arranged at the top of the coupler body and fixes a sample to be tested together with the second end of the pressure arm; the force sensor and the mastoid simulation element are sequentially arranged below the skin simulation element, and the mass of the mastoid simulation element is consistent with that of the human skull; the base is fixed to the bottom of force coupler and lifting support.
Example 1
When a bone conduction earphone or a bone conduction hearing aid is tested at present, a certain static force needs to be applied to a bone vibrator by a pressure lever, the force application in different sizes needs to be realized by manually adjusting the weight of a balancing weight by a pressure lever counterweight method, and the accuracy cannot be ensured due to the existence of manual operation errors; in addition, a method for adjusting a spring is adopted, the spring is very sensitive to displacement, and when the bone oscillator vibrates or equipment assembly has errors, the position of the stress surface of the bone oscillator on the probe is easy to change, so that the elastic force of the spring is changed, and accurate and constant static force cannot be obtained. In addition, the above 2 conventional methods cannot directly reflect the magnitude of the applied static force, the spring method needs to set a position in advance according to the magnitude of the force, and the operation is very troublesome, while the counterweight pressing rod method needs to measure the magnitude of the force by means of a spring scale and can only apply the static force in the vertical direction.
In addition, the existing force coupler 20 cannot simulate the force impedance characteristics of the mastoid part of the skull, which directly affects the output effect and accuracy of the test index.
Referring to fig. 1 to 3, to solve the above problem, embodiment 1 provides a narrow-band communication simulated mastoid for bone vibration test, which includes a force application module 10, a base 30 and a force coupler 20.
The force application module 10 comprises a lifting support 11 and a pressure arm 12, the bottom of the lifting support 11 is vertically fixed on the base 30, the upper end of the lifting support is fixedly connected with the pressure arm 12, and the height of the pressure arm 12 can be changed according to different testing elements or weights by adjusting the height of the pressure arm.
Referring to fig. 1, in a preferred embodiment, the lifting bracket 11 is height-adjusted by a knob, and those skilled in the art will understand that other structures of the lifting bracket 11 may be used as long as the pressing arm 12 can move in the vertical direction, and will not be described herein again.
Preferably, the lifting bracket 11 is made of stainless steel to ensure structural strength and stability.
Preferably, the pressing arm 12 is horizontally arranged and includes a first end and a second end, wherein the first end is fixedly connected to the top of the lifting bracket 11, two support arms 13 are arranged below the second end, the two support arms 13 are vertically arranged and parallel to each other, a buffer element 14 is arranged between the two support arms 13, and preferably, the buffer element 14 is made of shock-absorbing rubber; when the bone conduction earphone or the bone conduction hearing aid is tested, a sample to be tested is placed below the buffer element 14, the sample to be tested is compressed through the buffer element 14, and the elastic modulus of the bone conduction earphone or the bone conduction hearing aid existing when the bone conduction earphone or the bone conduction hearing aid clamps the mastoid of the skull is simulated.
In a preferred embodiment, the middle of the pressure arm 12 is provided with a tension spring fixing member 16, the tension spring fixing member 16 is arranged vertically downward and is used for installing a tension spring 40, the lower part of the tension spring 40 is connected with the base 30, and the vertical downward static pressure is adjusted by changing the length of the tension spring 40 so as to ensure that a sample to be tested is in good contact with the coupler body 21; preferably, the tension spring mount 16 and tension spring 40 are spring hangers that fit into a spring balance to accurately measure the static force provided to the pressure arm 12 to simulate the clamping force of a bone conduction hearing aid or bone conduction headset.
In another preferred embodiment, standard weight weights are directly placed on the upper portion of the second end of the pressing arm 12, and the number of the weights is changed to simulate different clamping forces of the bone conduction hearing aid or the bone conduction earphone, and meanwhile, the static force can be ensured to be directed vertically downwards.
Preferably, a level gauge 15 is arranged above the pressure arm 12, and is used for determining that the pressure arm 12 is always in a horizontal state during testing, so that the direction of the pressure is ensured, and errors of test data are avoided.
Specifically, in order to accurately simulate the clamping force of the bone conduction hearing aid or the bone conduction earphone, whether a weight is mounted on the upper portion of the second end of the pressing arm 12 to provide pressure or the tension spring 40 is used to provide pressure, the adjustable range of the static force generated by the two modes is 1.5N-10N.
Those skilled in the art will appreciate that since the step of adjusting the tension spring 40 is more complicated than the step of directly placing the weight, but the adjustment of the pressure value is more precise, the tension spring 40 may be used to adjust the static force in laboratory tests; at the production line or QC end, a standard weight can be placed directly over the second end of the press arm 12 for higher test efficiency.
Preferably, the force coupler 20 includes a coupler body 21, a skin simulation element 23, a mastoid simulation element 24 and a force sensor 25, which are disposed in the coupler body 21, the coupler body 21 and the lifting bracket 11 are respectively disposed at two sides of the upper portion of the base 30, both of which are parallel and vertically disposed, and the upper portion of the coupler body 21 corresponds to the position of the second end of the pressing arm 12.
In a preferred embodiment, the skin-simulating element 23 is disposed on the top of the coupler body 21, and fixes the sample to be tested together with the buffer element 14 at the second end of the pressing arm 12; a force sensor 25 and a mastoid simulation element 24 are arranged in sequence below the skin simulation element 23 to simulate the path of a bone conduction unit in a bone conduction earphone or a bone conduction hearing aid in transmitting vibrations into the inner ear.
Preferably, the skin-simulating element 23 is a vibration-transmitting rubber mat, which is made of two layers of compound rubber; the skin simulation element 23 is used for simulating human skin to contact the bone conduction unit and transmitting the vibration quantity generated by the bone conduction unit into the force sensor 25; preferably, the location of the vibration transmitting rubber pads corresponds to the location of the cushion elements 14.
Preferably, a tungsten steel force-transmitting head is further provided between the skin-mimicking element 23 and the force sensor 25 for mimicking the skull bone through which the vibrations generated by the bone conduction unit further travel after traversing the skin, and the force sensor 25 for mimicking the inner ear.
Preferably, the coupler body 21 comprises an SMA interface 22, the SMA interface 22 being connected to the force sensor 25 for transmitting the electrical signal generated by the force sensor 25 to an associated analyzer.
Preferably, the mastoid simulation element 24 is a copper weight, and those skilled in the art will appreciate that an adult human head weighs about 4.5-5.5 kg and brain tissue weighs 1-1.5 kg, thus in a preferred embodiment, the mastoid simulation element 24 weighs 3.5 kg.
Those skilled in the art will appreciate that when simulating the force resistance characteristics at the mastoid of the skull, the characteristics depend only on the contact surface material and the weight, and are independent of the material and shape of the weight.
Preferably, the coupler body 21 is substantially cylindrical and made of a sound-insulating material, so as to avoid possible interference of the external sound field with the force sensor 25, and to ensure the accuracy of the test result to the greatest extent. Preferably, the coupling chamber body is made of an aluminum alloy or stainless steel.
It will be understood by those skilled in the art that the material of the coupling cavity body can be freely selected according to different test conditions without departing from the spirit of the invention, and will not be described herein.
In a preferred embodiment, to avoid the interference of external vibration to the test, at least four damping elements are provided at the bottom of the base 30, and the damping elements can be selected from damping springs 31.
In this embodiment, when testing the finished bone conduction hearing aid, the finished bone conduction earphone and the vibrator unit, the sample to be tested is placed on the skin simulation element 23 of the force coupler 20, then a weight with a certain weight is placed on the pressing arm 12, and the height of the lifting bracket 11 is adjusted at the same time, so that the buffer element 14 of the pressing arm 12 can press the sample to be tested.
Or, when the test is performed, the length of the tension spring 40 is adjusted to change the static pressure of the pressing arm 12 in the vertical downward direction, and the height of the lifting bracket 11 is adjusted at the same time, so that the buffer element 14 of the pressing arm 12 can press the sample to be tested.
During testing, certain sound is played to enable the bone conduction unit of a sample to be tested to vibrate, the vibration signal is transmitted into the force sensor 25 through the skin simulation element 23 and the tungsten steel force transmission head, the force sensor 25 converts the vibration signal into an electric signal and transmits the electric signal into an analysis instrument of the next step through the SMA interface 22, and due to the existence of the mastoid simulation element 24, the force sensor 25 can simulate the force impedance characteristic of the mastoid position of the skull during vibration.
Example 2
The present embodiment provides a system for bone vibration testing in which the features already included in embodiment 1 are inherited naturally in the present embodiment.
In addition to the narrow-band communication simulated mastoid process for bone vibration testing described in example 1, an adapter and an analyzer were also provided in the system.
In a preferred embodiment, the adapter is in signal connection with the SMA interface 22 of the force coupler 20 for signal conditioning of the signal it outputs; preferably, the adapter includes a signal conditioning circuit, and is configured to perform signal conditioning operations such as amplification, isolation, and filtering on a signal returned by the force sensor 25, and finally send the signal to the analyzer.
Preferably, the analyzer includes related test analysis software stored in the host, and the specific analysis software is software corresponding to related tests in the prior art, which is not the point of the present embodiment and is not described herein again.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A narrow-band communication simulation mastoid for bone vibration test is characterized by comprising a force application module, a base and a force coupler;
the force application module comprises a lifting bracket and a pressure arm; the pressure arm is horizontally arranged and used for mounting weights and providing pressure in the vertical direction; the pressure arm comprises a first end and a second end, the first end is fixedly connected with the lifting support, and the second end is used for fixing a sample to be detected;
the force coupler comprises a coupler body, and a skin simulation element, a mastoid simulation element and a force sensor which are arranged in the coupler body; the skin simulation element is arranged at the top of the coupler body and fixes a sample to be tested together with the second end of the pressure arm; the force sensor and the mastoid simulation element are sequentially arranged below the skin simulation element, and the mass of the mastoid simulation element is consistent with that of a human skull;
the base is fixed to the force coupler and the bottom of the lifting support.
2. The narrow-band communication simulation mastoid process for bone vibration testing as claimed in claim 1, wherein the second end of the pressing arm comprises a pair of vertically and parallel downward-disposed arms, and a buffer member is disposed under both of the arms for fixing a sample to be tested.
3. The narrow band communication simulated mastoid process for bone vibration testing as recited in claim 2, wherein the cushioning element comprises a shock absorbing rubber.
4. The narrow band communication simulated mastoid process for bone vibration testing as claimed in claim 1, wherein a weight fixing member is provided between the first end and the second end of the pressing arm, the weight fixing member being disposed vertically downward.
5. The narrow band communication simulated mastoid process for bone vibration testing as recited in claim 1, wherein the coupler body comprises an acoustic barrier material.
6. The narrow band communication simulated mastoid process for bone vibration testing as claimed in claim 1, wherein the coupler body comprises an SMA interface, the SMA interface being connected to the force sensor.
7. The narrow-band communication simulation mastoid for bone vibration test as claimed in claim 2, wherein the skin simulation element comprises a vibration transmission rubber pad for transmitting the vibration amount generated by the element to be tested into the force sensor; the vibration transmission rubber mat corresponds to the position of the buffer element.
8. The narrow band communication simulated mastoid for bone vibration test as claimed in claim 1, wherein said mastoid simulating member includes a weight having a mass of 3.5 kg.
9. The narrow-band communication simulated mastoid for bone vibration test according to claim 1, wherein the lifting bracket and the coupler body are both vertically disposed on the base.
10. The narrow band communication simulated mastoid process for bone vibration test as claimed in claim 1, wherein the bottom of said base is provided with at least four shock absorbing elements.
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| CN202210844052.1A CN115134732A (en) | 2022-07-18 | 2022-07-18 | Narrow-band communication simulation mastoid for bone vibration test |
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| CN202210844052.1A CN115134732A (en) | 2022-07-18 | 2022-07-18 | Narrow-band communication simulation mastoid for bone vibration test |
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Citations (4)
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|---|---|---|---|---|
| US5624377A (en) * | 1995-02-16 | 1997-04-29 | Larson-Davis, Inc. | Apparatus and method for simulating a human mastoid |
| CN103988485A (en) * | 2012-05-18 | 2014-08-13 | 京瓷株式会社 | Measurement device, measurement system, and measurement method |
| CN112261229A (en) * | 2020-09-11 | 2021-01-22 | 歌尔科技有限公司 | Bone conduction call equipment testing method, device and system |
| CN114302310A (en) * | 2021-12-28 | 2022-04-08 | 鹿溪医疗设备(广东)有限公司 | Bone conduction earphone detection device |
-
2022
- 2022-07-18 CN CN202210844052.1A patent/CN115134732A/en active Pending
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|---|---|---|---|---|
| US5624377A (en) * | 1995-02-16 | 1997-04-29 | Larson-Davis, Inc. | Apparatus and method for simulating a human mastoid |
| CN103988485A (en) * | 2012-05-18 | 2014-08-13 | 京瓷株式会社 | Measurement device, measurement system, and measurement method |
| CN112261229A (en) * | 2020-09-11 | 2021-01-22 | 歌尔科技有限公司 | Bone conduction call equipment testing method, device and system |
| WO2022052257A1 (en) * | 2020-09-11 | 2022-03-17 | 歌尔股份有限公司 | Bone conduction communication device testing method, apparatus and system |
| CN114302310A (en) * | 2021-12-28 | 2022-04-08 | 鹿溪医疗设备(广东)有限公司 | Bone conduction earphone detection device |
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| Title |
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| 曾平 等: "三分频式压电骨传导助听装置的仿真与测试", 《光学精密工程》, vol. 23, no. 04, 15 April 2015 (2015-04-15), pages 1011 - 1018 * |
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