JP2014140223A - Measuring system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a measuring system capable of correctly evaluating an electronic apparatus having a vibrator to transmit sound by vibration transmission and facilitating specification management.SOLUTION: A measuring system is the system that evaluates an electronic apparatus 100 for transmitting sound to a user by vibration transmission by putting a vibrator 102 held by a housing 101 against an ear of a human body. The system includes: a storage unit 103 for storing sound source information for vibrating the vibrator 102. The vibrator 102 is vibrated by sound source information stored in the storage unit 103 and the vibration of the vibrator 102 is detected by a vibration detection unit 55 of the measuring instrument 10. Then, the electronic apparatus 100 is evaluated.

Description

  The present invention relates to a measurement system for evaluating an electronic device that transmits sound to a user by vibration transmission by pressing a vibrating body held in a housing against a human ear.

  Patent Document 1 describes an electronic device such as a mobile phone that transmits air conduction sound and bone conduction sound to a user (user). According to Patent Document 1, air conduction sound is sound transmitted to the auditory nerve of a user by vibration of air that is caused by vibration of an object being transmitted to the eardrum through the external auditory canal. Have been described. Patent Document 1 describes that bone conduction sound is sound transmitted to the user's auditory nerve through a part of the user's body (for example, cartilage of the outer ear) that contacts the vibrating object. ing.

  In the telephone set described in Patent Document 1, it is described that a short plate-like vibrating body made of a piezoelectric bimorph and a flexible material is attached to the outer surface of a housing via an elastic member. Further, in Patent Document 1, when a voltage is applied to the piezoelectric bimorph of the vibrating body, the vibrating body vibrates due to the expansion and contraction of the piezoelectric material in the longitudinal direction, and the user contacts the vibrating body with the auricle. It is described that air conduction sound and bone conduction sound are transmitted to the user. In addition, unlike the telephone described in Patent Document 1, the applicant of the present invention vibrates a panel such as a display panel or a protection panel arranged on the surface of a mobile phone with a piezoelectric element, and generates air conduction sound generated thereby. In addition, we are developing mobile phones that transmit sound using vibration sound, which is a sound component by vibration transmission that is transmitted when a vibrating panel is applied to a human ear.

JP 2005-348193 A

  By the way, an electronic device including a vibrating body such as a piezoelectric receiver that transmits some sound by vibration of a telephone like Patent Document 1 or a mobile phone developed by the present applicant is manufactured in order to manage the specifications of the equipment. It is desired to evaluate the device by inspecting the characteristics of the vibrator in the stage. However, conventionally, no consideration is given to evaluation and specification management of an electronic device including a vibrating body.

  The present invention has been made in view of the above-described viewpoints, and it is an object of the present invention to provide a measurement system that can correctly evaluate an electronic device having a vibrating body that transmits sound by vibration transmission and can easily manage specifications. is there.

An invention of a measurement system according to the present invention that achieves the above object is a measurement system for evaluating an electronic device that transmits a sound to a user through vibration transmission by pressing a vibration body held in a housing against an ear of a human body. And
A storage unit for storing sound source information for vibrating the vibrating body is provided, the vibrating body is vibrated by the sound source information stored in the storage unit, and the vibration of the vibrating body is detected by the vibration detecting unit of the measuring apparatus. The electronic device is evaluated.

  The storage unit may be a memory of the electronic device.

  The storage unit may be included in the measurement device.

  The measurement apparatus may include an electronic device mounting unit that detachably holds the electronic device, and a measurement unit that evaluates the electronic device based on an output of the vibration detection unit.

  The measurement unit may include a signal processing unit that processes the output of the vibration detection unit, and a control unit that controls the signal processing unit.

  The signal processing unit may vibrate the vibrator according to the sound source information stored in the storage unit.

  The control unit may vibrate the vibrator according to the sound source information stored in the storage unit.

  The sound source information may be downloaded via a recording medium or a network.

  The sound source information may be stored in the storage unit as test sound information or an application for generating the test sound information.

The electronic device mounting part includes an ear-shaped part imitating the human ear,
The vibration detection unit may be disposed in a peripheral portion of the artificial external ear canal formed in the ear mold unit.

The electronic device mounting part further comprises a human head model,
The ear mold part may be detachable from the head model as an artificial ear constituting the head model.

The ear mold unit includes an ear model and an artificial external ear canal unit coupled to the ear model,
The artificial ear canal may be formed in the artificial ear canal portion.

  The artificial external auditory canal may have a length of 20 mm to 40 mm.

  You may further provide the holding | maintenance part holding the said electronic device.

  The holding unit may include a support unit that supports the electronic device in at least two places so that a person presses the electronic device against his / her ear.

  The holding unit may be movable and adjustable in a direction in which the electronic device is pressed against the ear mold unit.

  The holding part may be adjustable to rotate in a direction in which the electronic device is pressed against the ear mold part.

  The holding unit may be capable of adjusting a pressing force of the vibrating body in a range of 0N to 10N with respect to the ear mold unit.

  The holding portion may be capable of adjusting a pressing force of the vibrating body with respect to the ear mold portion in a range of 3N to 8N.

  The holding unit may be capable of moving and adjusting the electronic device in the vertical direction of the electronic device with respect to the ear-shaped portion so that the contact posture of the electronic device with respect to the ear-shaped portion can be changed.

  The contact posture may include a posture in which the electronic device is brought into contact with the ear mold portion so that the vibrating body covers the ear mold portion.

  The contact posture may include a posture in which the electronic device is brought into contact with the ear mold portion so that a part of the vibrating body is in contact with the ear mold portion.

  The ear mold portion may be made of a material conforming to IEC60318-7.

  The vibration detection unit may include a plurality of vibration detection elements arranged in a peripheral part of the artificial external ear canal.

  The vibration detection unit may include two arc-shaped vibration detection elements arranged so as to surround a peripheral part of the artificial external ear canal.

  The vibration detection unit may include a ring-shaped vibration detection element disposed so as to surround a peripheral part of the artificial external ear canal.

  The ear mold unit may further include a sound pressure measurement unit for measuring the sound pressure of the sound propagated through the artificial external ear canal.

  The sound pressure measurement unit may include a microphone held by a tube member extending from an outer wall of the artificial external ear canal.

  The sound pressure measurement unit may include a microphone arranged in a floating state from the outer wall of the artificial ear canal.

  ADVANTAGE OF THE INVENTION According to this invention, the electronic device which has a vibrating body which transmits a sound by vibration transmission can be evaluated correctly, and specification management becomes easy.

It is a figure which shows schematic structure of the measurement system which concerns on 1st Embodiment of this invention. It is a top view which shows an example of the electronic device of a measuring object. FIG. 2 is a partial detail view of the measuring apparatus of FIG. 1. It is a functional block diagram of the principal part of the measurement system of FIG. FIG. It is a figure which shows schematic structure of the principal part of the measuring apparatus which comprises the measuring system which concerns on 2nd Embodiment of this invention. FIG. 6 is a partial detail view of the measuring apparatus of FIG. 5.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
FIG. 1 is a diagram showing a schematic configuration of a measurement system according to the first embodiment of the present invention. The measurement system according to the present embodiment includes a measurement device 10 for evaluating an electronic device 100 to be measured having a vibrating body. The measuring apparatus 10 includes an electronic device mounting unit 20 and a measuring unit 200 connected to the electronic device mounting unit 20 and the electronic device 100. The electronic device mounting portion 20 includes an ear mold portion 50 supported by the base 30 and a holding portion 70 that holds the electronic device 100 to be measured. In the following description, the electronic device 100 is a mobile phone such as a smartphone having a rectangular panel 102 larger than a human ear on the surface of a rectangular casing 101 as shown in a plan view in FIG. Assume that the panel 102 vibrates as a vibrating body. The electronic device 100 includes an external or built-in memory 103 as shown in FIG. First, the configuration of the electronic device mounting unit 20 will be described.

  The ear mold part 50 imitates the human ear and includes an ear model 51 and an artificial external ear canal part 52 coupled to the ear model 51. The artificial external auditory canal portion 52 has a size that covers the ear model 51, and an artificial external ear canal 53 is formed at the center. The ear mold 50 is supported by the base 30 via a support member 54 at the peripheral edge of the artificial external ear canal 52.

  The ear mold part 50 is made of, for example, a material similar to the material of an average ear model used for, for example, HATS (Head And Torso Simulator) of a human body model or KEMAR (a name of an electronic mannequin for acoustic research of Knowles). It consists of the material based on IEC60318-7. This material can be formed of a material such as rubber having a hardness of 35 to 55, for example. The rubber hardness may be measured in accordance with, for example, international rubber hardness (IRHD / M method) compliant with JIS K 6253 or ISO 48. Moreover, as a hardness measuring apparatus, the fully automatic type IRHD * M method micro size international rubber hardness tester GS680 by Teclock Co., Ltd. is used suitably. In consideration of the variation in the hardness of the ear depending on the age, the ear mold portion 50 may be prepared by roughly preparing two to three types of different hardness, and replacing them.

  The thickness of the artificial external auditory canal 52, that is, the length of the artificial external auditory canal 53 corresponds to the length to the human eardrum (cochlea), and is appropriately set within a range of 20 mm to 40 mm, for example. In the present embodiment, the length of the artificial external ear canal 53 is approximately 30 mm.

  In the ear mold portion 50, a vibration detector 55 is disposed on the end surface of the artificial external ear canal portion 52 on the side opposite to the ear model 51 side so as to be located in the periphery of the opening of the artificial external ear canal 53. The vibration detection unit 55 detects the amount of vibration transmitted through the ear canal unit 52 when the vibrating panel 102 is applied to the ear mold unit 50. That is, when the panel 102 is pressed against the human ear, the vibration detection unit 55 directly detects the amount of vibration corresponding to the bone-conduction component that is heard without passing through the eardrum. Such a vibration detection unit 55 has, for example, a flat output characteristic in a measurement frequency range (for example, 0.1 kHz to 30 kHz) of the electronic device 100, and is a piezoelectric acceleration that can be accurately measured even with a light and fine vibration. The vibration detection element 56 includes a vibration pickup such as a pickup.

  FIG. 3A is a plan view of the ear mold portion 50 as viewed from the base 10 side. 3A illustrates the case where the ring-shaped vibration detection element 56 is disposed so as to surround the periphery of the opening of the artificial external ear canal 53. However, the number of the vibration detection elements 56 is not limited to one, and a plurality of vibration detection elements 56 may be provided. It may be. When a plurality of vibration detection elements 56 are arranged, they may be arranged at appropriate intervals around the artificial ear canal 53, or two arc-shaped vibration detections surrounding the opening periphery of the artificial ear canal 53. An element may be arranged. In FIG. 3A, the artificial external auditory canal portion 52 has a rectangular shape, but the artificial external auditory canal portion 52 may have an arbitrary shape.

  Furthermore, a sound pressure measurement unit 60 is disposed in the ear mold unit 50. The sound pressure measurement unit 60 measures the sound pressure of the sound propagated through the artificial external ear canal 53. That is, when the panel 102 is pressed against the human ear, the sound pressure measuring unit 60 vibrates the air by the vibration of the panel 102 and directly corresponds to the air pressure component to be heard via the eardrum, and The sound pressure corresponding to the air conduction component for listening to the sound generated by the ear itself through the eardrum due to the vibration of the panel 102 is measured.

  As shown in the cross-sectional view taken along the line bb in FIG. 3A, the sound pressure measuring unit 60 starts from the outer wall (peripheral wall of the hole) of the artificial external ear canal 53 with the ring-shaped vibration detecting element 56. A microphone 62 held by a tube member 61 extending through the opening is provided. For example, the electronic device 100 includes a measurement capacitor microphone having a flat output characteristic in the measurement frequency range and a low self-noise level. The microphone 62 is disposed so that the sound pressure detection surface substantially coincides with the end surface of the artificial external ear canal unit 52. Note that the microphone 62 may be disposed in a floating state from the outer wall of the artificial external ear canal 53 while being supported by the artificial external ear canal unit 52 or the base 10, for example.

  Next, the holding unit 70 will be described. In the case where the electronic device 100 is a mobile phone having a rectangular shape in a plan view such as a smartphone, when a person tries to hold the mobile phone with one hand and press it against his / her ear, the both sides of the mobile phone are usually held by hands. Will be supported by. Further, the pressing force and contact posture of the mobile phone against the ear vary depending on the person (user) or fluctuates during use. In the present embodiment, electronic device 100 is held by imitating such a usage mode of a mobile phone.

  Therefore, the holding part 70 includes support parts 71 that support both side parts of the electronic device 100. The support portion 71 is attached to one end portion of the arm portion 72 so as to be rotatable and adjustable around an axis y1 parallel to the y axis in a direction in which the electronic device 100 is pressed against the ear mold portion 50. The other end of the arm portion 72 is coupled to a movement adjusting portion 73 provided on the base 30. The movement adjusting unit 73 moves the arm unit 72 in the direction parallel to the x axis orthogonal to the y axis, the vertical direction x1 of the electronic device 100 supported by the support unit 71, and the z axis orthogonal to the y axis and the x axis. In a direction parallel to the direction z1 in which the electronic device 100 is pressed against the ear mold portion 50.

  As a result, the electronic device 100 supported by the support portion 71 adjusts the support portion 71 about the axis y1 or adjusts the movement of the arm portion 72 in the z1 direction. 102) is pressed against the ear mold 50. In the present embodiment, the pressing force is adjusted in the range of 0N to 10N, preferably in the range of 3N to 8N. Of course, in addition to the axis y1, the support portion 71 may be configured to be rotatable about another axis.

  Here, the range of 0N to 10N is intended to enable measurement in a range sufficiently wider than the pressing force assumed when a human presses an electronic device against his / her ear to use a telephone call or the like. It is said. In the case of 0N, for example, not only when the ear mold part 50 is in contact but not pressed, it can be held away from the ear mold part 50 by 1 cm so that measurement can be performed at each separation distance. It may be. As a result, the degree of attenuation due to the distance of the air conduction sound can be measured by the microphone 62, and the convenience as a measurement system is improved. In addition, the range of 3N to 8N usually assumes an average force range that a normal hearing person presses against an ear when making a call using a conventional speaker. Although there may be differences depending on race and gender, in general, in electronic devices such as smartphones and conventional mobile phones equipped with conventional speakers, vibration sound and air conduction sound are usually applied with a pressing force that is pressed by the user. Is preferably measurable.

  In addition, by adjusting the movement of the arm unit 72 in the x1 direction, the contact posture of the electronic device 100 with respect to the ear mold unit 50 is, for example, the posture in which the panel 102 which is an example of a vibrating body covers almost the entire ear mold unit 50 As shown in FIG. 1, the panel 102 is adjusted so as to cover a part of the ear mold portion 50. The arm portion 72 is configured to be movable and adjustable in a direction parallel to the y-axis, or is configured to be rotatable and adjustable around an axis parallel to the x-axis and the z-axis, so that the ear-shaped portion 50 can be adjusted. Thus, the electronic device 100 may be configured to be adjustable to various contact postures. Needless to say, the vibrating body is not limited to a panel that covers a wide range of ears, but an electronic device having protrusions and corners that transmit vibration only to a part of the ear mold 50, for example, the part of the tragus. Even a device can be a measurement object of the present invention.

  Next, the configuration of the measurement unit 200 in FIG. 1 will be described with reference to FIG. FIG. 4 is a functional block diagram of the main part of the measurement system of FIG. The measurement unit 200 includes a signal processing unit 400, a PC (personal computer) 500, and a printer 600. The signal processing unit 400 is connected to a vibration detection unit 55 and a sound pressure measurement unit 60 provided in the ear mold unit 50. The signal processing unit 400 includes, for example, an A / D conversion unit 410 that performs A / D conversion on input signals from the vibration detection unit 55 and the sound pressure measurement unit 60, and an output combination unit that combines the A / D converted output. 440 and a signal processing control unit 470 that controls the operation of each unit.

  The signal processing unit 400 is connected to the PC 500 via an interface connection cable 510 such as a USB, RS-232C, SCSI, or PC card, for example, and the signal processing control unit 470 performs signal processing based on a command from the PC 500. Operation is controlled. Thereby, the signal processing unit 400, based on the outputs of the vibration detection unit 55 and the sound pressure measurement unit 60, the vibration amount and the sound pressure transmitted through the ear mold unit 50 due to the vibration of the electronic device 100 to be measured, that is, the bone It is possible to simultaneously measure the sound conduction and the air conduction sound. The signal processing unit 400 can be configured as software executed on any suitable processor such as a CPU (Central Processing Unit), or can be configured by a DSP (Digital Signal Processor).

  The PC 500 constitutes a control unit and has an evaluation application for the electronic device 100. The evaluation application is downloaded via, for example, a CD-ROM or a network. For example, the PC 500 displays an application screen based on the evaluation application on the display unit 520. Then, the PC 500 transmits a command to the signal processing unit 400 based on information input via the application screen. The PC 500 receives a command response and data from the signal processing unit 400, performs predetermined processing based on the received data, and displays the measurement result on the application screen. Further, if necessary, the measurement result is output to the printer 600 and printed.

  In FIG. 4, the signal processing unit 400 is mounted on the base 30 of the electronic device mounting unit 20, for example, and the PC 500 and the printer 600 are installed apart from the base 30, and the signal processing unit 400 and the PC 500 are connected. Can be connected via the connection cable 510.

  In the measurement system according to the present embodiment, sound source information corresponding to a reproduction sound source format for vibrating the panel 102 is downloaded and stored in the built-in memory 103 of the electronic device 100 to be measured, for example, via a recording medium or a network. Is done. Here, the sound source information is test sound information for evaluating the electronic device 100 and is stored according to the electronic device 100. For example, when the electronic device 100 is a mobile phone, the test sound (non-conversation pseudo signal, pink noise, white noise, pseudo noise used when measuring the acoustic characteristics defined in 3GPP (3GPP TS26.131 / 132) is used. Noise, multi-sine wave, sine wave, artificial voice). The sound source information may be stored as test sound information, or may be stored as an application that generates the test sound information.

  The electronic device 100 is connected to the measurement unit 200 via an interface connection cable 511 such as a USB so as to be controllable by the measurement unit 200. Note that the connection between the electronic device 100 and the measurement unit 200 by the connection cable 511 may be such that the electronic device 100 and the signal processing control unit 470 of the signal processing unit 400 are connected as shown by a solid line in FIG. As indicated by a virtual line in FIG. 4, electronic device 100 and PC 500 may be connected.

  In the measurement system according to the present embodiment, the measuring device 200 controls the electronic device 100 to be measured. That is, the signal processing control unit 470 of the signal processing unit 400 controls the electronic device 100 in synchronization with the reception of the measurement start command from the PC 500. Alternatively, the electronic device 100 is directly controlled by the PC 500 in synchronization with the measurement start command transmission to the signal processing unit 400. Thus, predetermined sound source information stored in the built-in memory 103 is read, and the panel 102 is vibrated based on the read sound source information. In addition, the signal processing unit 400 starts output processing of the vibration detection unit 55 and the sound pressure measurement unit 60 in synchronization with the vibration of the panel 102, and bone conduction sound and air conduction sound transmitted through the ear mold unit 50. And measure. These measurement results are displayed on the display unit 520, and are output to the printer 600 as needed to be used for evaluation of the electronic device 100.

  As described above, in the measurement system according to the present embodiment, the sound source information is stored in the built-in memory 103 of the electronic device 100 to be measured, and the electronic device 100 is controlled by the measurement unit 200 of the measurement apparatus 10 to be electronic device 100. The panel 102 is vibrated by the sound source information stored in the built-in memory 103. Then, in synchronization with the vibration of the panel 102, the measurement unit 200 measures the bone conduction sound and the air conduction sound transmitted through the ear mold unit 50 based on the outputs of the vibration detection unit 55 and the sound pressure measurement unit 60. Then, the electronic device 100 is evaluated based on the measurement result. Therefore, since the electronic device 100 can be vibrated with desired sound source information, the electronic device 100 can be correctly evaluated, and the specification management of the electronic device 100 is facilitated. Further, since the impulse response characteristic synchronized with the start of vibration of the panel 102 can be measured, more detailed evaluation can be performed.

  In addition, since the vibration detection unit 55 can measure the vibration level weighted by the feature of vibration transmission to the human ear via the ear mold unit 50, the electronic device 100 can be evaluated more correctly. Simultaneously with the vibration level, the sound pressure measurement unit 60 can also measure the sound pressure level through the artificial external ear canal 53 of the ear mold 50. As a result, the audibility level obtained by combining the vibration level corresponding to the vibration transmission amount to the human ear and the sound pressure level corresponding to the air conduction sound can be measured, so that the electronic device 100 can be evaluated in more detail. It becomes. Furthermore, since the holding unit 70 can change the pressing force of the electronic device 100 against the ear-shaped portion 50 and can also change the contact posture, the electronic device 100 can be evaluated in various modes.

(Second Embodiment)
FIG. 5 is a diagram showing a schematic configuration of a main part of a measuring apparatus constituting a measuring system according to the second embodiment of the present invention. The measuring apparatus 110 according to the present embodiment is different from the electronic device mounting unit 20 in the first embodiment in the configuration of the electronic device mounting unit 120, and the other configurations are the same as those in the first embodiment. Therefore, in FIG. 5, illustration of the measurement part 200 shown in 1st Embodiment is abbreviate | omitted. The electronic device mounting unit 120 includes a human head model 130 and a holding unit 150 that holds the electronic device 100 to be measured. The head model 130 is made of, for example, HATS or KEMAR. The artificial ear 131 of the head model 130 is detachable from the head model 130.

  The artificial ear 131 constitutes an ear mold portion, and as shown in a side view removed from the head model 130 in FIG. 6A, an ear model 132 similar to the ear mold portion 50 of the first embodiment is provided. And an artificial external auditory canal portion 134 coupled to the ear model 132 and having an artificial external auditory canal 133 formed thereon. In the artificial external ear canal unit 134, a vibration detection unit 135 including a vibration detection element is arranged around the opening of the artificial external ear canal 133, similarly to the ear mold unit 50 of the first embodiment. In addition, a sound pressure measuring unit 136 having a microphone at the center is arranged at the mounting portion of the artificial ear 131 of the head model 130 as shown in a side view with the artificial ear 131 removed in FIG. Yes. The sound pressure measuring unit 136 is arranged so as to measure the sound pressure of the sound propagated through the artificial external ear canal 133 of the artificial ear 131 when the artificial ear 131 is attached to the head model 130. Note that the sound pressure measurement unit 136 may be arranged on the artificial ear 131 side in the same manner as the ear mold unit 50 of the first embodiment. The vibration detection element constituting the vibration detection unit 135 and the microphone constituting the sound pressure measurement unit 136 are connected to the measurement unit in the same manner as in the first embodiment.

  The holding unit 150 is detachably attached to the head model 130, and includes a head fixing unit 151 to the head model 130, a support unit 152 that supports the electronic device 100 to be measured, and a head fixing unit 151. And a multi-joint arm portion 153 for connecting the support portion 152. The holding unit 150 can adjust the pressing force and the contact posture with respect to the artificial ear 131 of the electronic device 100 supported by the support unit 152 through the articulated arm unit 153 in the same manner as the holding unit 70 of the first embodiment. It is configured.

  According to the measurement system according to the present embodiment, the same effect as the measurement system of the first embodiment can be obtained. In particular, since the measuring apparatus 110 evaluates the electronic device 100 by detachably attaching the artificial ear 131 for vibration detection to the human head model 130, depending on the actual usage mode in consideration of the influence of the head. An appropriate evaluation is possible.

  In addition, this invention is not limited only to the said embodiment, Many deformation | transformation or a change is possible. For example, in the above embodiment, the built-in memory 103 of the electronic device 100 to be measured is used as the sound source information storage unit. However, a sound source information storage unit may be provided on the measurement device side. For example, the internal memory of the signal processing unit 400 or the PC 500 is used, or the signal processing unit 400 or the PC 500 is provided with a storage unit dedicated to sound source information. The panel 102 may be vibrated by reading predetermined sound source information from and supplying the information to the electronic device 100. In addition, a storage unit dedicated to sound source information may be provided on the measurement device side independently of the signal processing unit 400 and the PC 500.

  In the above embodiment, the measurement unit 200 is provided with the PC 500 separately from the signal processing unit 400. However, the function of the evaluation application executed by the PC 500 is mounted on the signal processing unit 400, and the PC 500 is omitted. May be. Furthermore, the measuring unit 200 is not limited to a stand-alone configuration that aggregates all functions, but has a configuration that utilizes a network system or a cloud, such as a case where the measurement unit 200 is divided into one or a plurality of PCs or external servers. Needless to say, it may be.

  In the above embodiment, it is assumed that the electronic device 100 to be measured is a mobile phone such as a smartphone and the panel 102 vibrates as a vibrating body. However, in the usage mode such as a phone call with a foldable mobile phone, An electronic device in which a panel in contact with the ear vibrates can be similarly evaluated. Moreover, not only a mobile phone but other piezoelectric receivers can be evaluated in the same manner. Further, depending on the characteristics measured by the vibrating body, such as measuring the direct vibration of the vibrating body, the ear mold portion 50 and the sound pressure measuring portion 60 can be omitted.

DESCRIPTION OF SYMBOLS 10 Measuring apparatus 20 Electronic equipment mounting part 30 Base 50 Ear mold part 51 Ear model 52 Artificial ear canal part 53 Artificial ear canal part 54 Support member 55 Vibration detection part 56 Vibration detection element 60 Sound pressure measurement part 61 Tube member 62 Microphone 70 Holding part 71 Support unit 72 Arm unit 73 Movement adjustment unit 75 Signal processing unit 76 Output unit 100 Electronic device 101 Housing 102 Panel (vibrating body)
DESCRIPTION OF SYMBOLS 103 Memory 110 Measuring apparatus 120 Electronic equipment mounting part 130 Head model 131 Artificial ear 132 Ear model 133 Artificial ear canal 134 Artificial ear canal part 135 Vibration detection part 136 Sound pressure measurement part 150 Holding part 151 Head fixing part 152 Support part 153 Multi joint Arm unit 200 Measuring unit 400 Signal processing unit 500 PC
510,511 Connection cable

Claims (29)

A measurement system for evaluating an electronic device that presses a vibration body held in a housing against a human ear and transmits sound to a user by vibration transmission,
A storage unit for storing sound source information for vibrating the vibrating body is provided, the vibrating body is vibrated by the sound source information stored in the storage unit, and the vibration of the vibrating body is detected by the vibration detecting unit of the measuring apparatus. And measuring the electronic device.   The measurement system according to claim 1, wherein the storage unit includes a memory of the electronic device.   The measurement system according to claim 1, wherein the storage unit is included in the measurement device.   The said measuring apparatus is provided with the electronic device mounting part which hold | maintains the said electronic device so that attachment or detachment, and the measurement part which evaluates the said electronic device based on the output of the said vibration detection part. The measurement system according to item.   The measurement system according to claim 4, wherein the measurement unit includes a signal processing unit that processes an output of the vibration detection unit, and a control unit that controls the signal processing unit.   The measurement system according to claim 5, wherein the signal processing unit vibrates the vibrating body with the sound source information stored in the storage unit.   The measurement system according to claim 5, wherein the control unit vibrates the vibrating body according to the sound source information stored in the storage unit.   The measurement system according to claim 1, wherein the sound source information is downloaded via a recording medium or a network.   The measurement system according to any one of claims 1 to 8, wherein the sound source information is stored in the storage unit as test sound information or an application for generating the test sound information. The electronic device mounting part includes an ear-shaped part imitating the human ear,
The measurement system according to claim 4, wherein the vibration detection unit is disposed in a peripheral part of an artificial external ear canal formed in the ear mold unit. The electronic device mounting part further comprises a human head model,
The measurement system according to claim 10, wherein the ear mold part is detachable from the head model as an artificial ear constituting the head model. The ear mold unit includes an ear model and an artificial external ear canal unit coupled to the ear model,
The measurement system according to claim 10 or 11, wherein the artificial external auditory canal is formed in the artificial external auditory canal.   The measurement system according to any one of claims 10 to 12, wherein the artificial external auditory canal has a length of 20 mm to 40 mm.   The measurement system according to claim 10, further comprising a holding unit that holds the electronic device.   The measurement system according to claim 14, wherein the holding unit includes a support unit that supports the electronic device in at least two places so that a person presses the electronic device against his / her ear.   The measurement system according to claim 14 or 15, wherein the holding unit is movable and adjustable in a direction in which the electronic device is pressed against the ear mold unit.   The measurement system according to claim 14 or 15, wherein the holding unit is rotatable and adjustable in a direction in which the electronic device is pressed against the ear mold unit.   The measurement system according to claim 16 or 17, wherein the holding unit is capable of adjusting a pressing force of the vibrating body with respect to the ear mold unit in a range of 0N to 10N.   The measurement system according to claim 16 or 17, wherein the holding unit is capable of adjusting a pressing force of the vibrating body with respect to the ear mold unit in a range of 3N to 8N.   The holding unit can adjust the movement of the electronic device in the vertical direction of the electronic device relative to the ear-shaped portion so that the contact posture of the electronic device with respect to the ear-shaped portion can be changed. The measurement system according to any one of the above.   The measurement system according to claim 20, wherein the contact posture includes a posture in which the electronic device is brought into contact with the ear mold portion so that the vibrating body covers the ear mold portion.   21. The measurement system according to claim 20, wherein the contact posture includes a posture in which the electronic apparatus is brought into contact with the ear mold portion so that a part of the vibrating body is in contact with the ear mold portion.   The measurement system according to any one of claims 10 to 22, wherein the ear mold part is made of a material that conforms to IEC60318-7.   The measurement system according to any one of claims 10 to 23, wherein the vibration detection unit includes a plurality of vibration detection elements arranged in a peripheral part of the artificial external ear canal.   The measurement system according to any one of claims 10 to 23, wherein the vibration detection unit includes two arc-shaped vibration detection elements arranged so as to surround a peripheral part of the artificial external ear canal.   The measurement system according to any one of claims 10 to 23, wherein the vibration detection unit includes a ring-shaped vibration detection element disposed so as to surround a peripheral part of the artificial external ear canal.   The measurement system according to any one of claims 10 to 26, wherein the ear mold unit further includes a sound pressure measurement unit for measuring a sound pressure of sound propagated through the artificial external auditory canal.   The measurement system according to claim 27, wherein the sound pressure measurement unit includes a microphone held by a tube member extending from an outer wall of the artificial ear canal. The measurement system according to claim 27, wherein the sound pressure measurement unit includes a microphone arranged in a floating state from an outer wall of the artificial ear canal.

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