JPH05153687A - Dummy head for evaluating composite sense - Google Patents

Dummy head for evaluating composite sense

Info

Publication number
JPH05153687A
JPH05153687A JP3337869A JP33786991A JPH05153687A JP H05153687 A JPH05153687 A JP H05153687A JP 3337869 A JP3337869 A JP 3337869A JP 33786991 A JP33786991 A JP 33786991A JP H05153687 A JPH05153687 A JP H05153687A
Authority
JP
Japan
Prior art keywords
dummy head
head
small camera
visual information
microphone
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
JP3337869A
Other languages
Japanese (ja)
Inventor
Wataru Yagihashi
渉 八木橋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor Co Ltd
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 Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Priority to JP3337869A priority Critical patent/JPH05153687A/en
Publication of JPH05153687A publication Critical patent/JPH05153687A/en
Pending legal-status Critical Current

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  • Stereophonic Arrangements (AREA)

Abstract

PURPOSE:To obtain the composite sense evaluating dummy head which can add visual information having no sense of incompatibility and having high accuracy to a dummy head which can execute binaural sound recording. CONSTITUTION:A miniature camera 20 for recording simultaneously an image is provided in front of the head part corresponding to a position of eyes of a dummy head 15 provided with microphones 17. In such a way, audio-visual information which a driver in a car cabin receives can be reproduced by including an actual position relation, as well of eyes and ears, and a noise evaluation having high accuracy to which visual information is added can be executed.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】この発明は車室内の音響特性を乗
員の視覚の影響まで含めて評価することを可能とした複
合感覚評価用ダミーヘッドに関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dummy head for composite sensation evaluation, which makes it possible to evaluate the acoustic characteristics of a passenger compartment, including the visual effects of passengers.

【0002】[0002]

【従来の技術】実耳聴を再現するための音を収録するマ
イクロホンが備えられている従来のダミーヘッドとして
は、例えば第6図及び7図に示すようなものがある(ブ
リューエル・アンド・ケヤ社4128型ダミーヘッドカ
タログ参照)。図7はダミーヘッド1の右耳断面図を示
し、マイクロホン2はダミーヘッド1の耳相当位置に配
設されている。図7において、3は合成ゴム等で形成さ
れた耳介、4は音響インピーダンスをシュミレートした
イヤーシミュレータ、5はプリアンプであり先端にマイ
クロホンカートリッジ6が取り付けられている。このダ
ミーヘッド1は、車室内等の音響特性を測定計測するの
に適しており、最近では音の官能評価用としてマイクロ
ホン2の位置を外耳中央O点に取付け、車室内等で収音
した音を、テープレコーダーで再生することができるダ
ミーヘッドも考えられている。
2. Description of the Related Art As a conventional dummy head provided with a microphone for recording sound for reproducing actual hearing, for example, there is one as shown in FIGS. (See Kaya's 4128 type dummy head catalog). FIG. 7 is a right ear sectional view of the dummy head 1, and the microphone 2 is disposed at a position corresponding to the ear of the dummy head 1. In FIG. 7, 3 is an auricle formed of synthetic rubber or the like, 4 is an ear simulator simulating acoustic impedance, 5 is a preamplifier, and a microphone cartridge 6 is attached to the tip. This dummy head 1 is suitable for measuring and measuring acoustic characteristics in a vehicle interior, etc., and recently, for sensory evaluation of sound, the position of the microphone 2 is attached to the center O point of the outer ear and the sound picked up in the vehicle interior, etc. , A dummy head that can be played on a tape recorder is also considered.

【0003】また、従来の車室内音響特性評価方法とし
ては、例えば、図8〜図10に示すようなものがある
(特開平2−226999号参照)。すなわち、従来よ
りオーディオの分野では、人間の頭形状に似たダミーヘ
ッドを用いて人間の耳位置にあたる部分の音をマイクロ
ホンで録音し、ヘッドホンにより再生音を聴く「バイノ
ーラル録音・再生法」が確立されており、同一実音源か
らの音を人間の耳が受けると同様なレベル差、時間差が
生じるように録音することで、より原音に近い音が再現
できるようになっている。
Further, as a conventional method for evaluating the acoustic characteristics of the vehicle interior, there are, for example, those shown in FIGS. 8 to 10 (see Japanese Patent Laid-Open No. 2-226999). In other words, in the field of audio, a "binaural recording / playback method" has been established in the field of audio, where a dummy head that resembles the shape of a human head is used to record the sound of the part corresponding to the human ear position with a microphone and the playback sound is heard through the headphones. The sound from the same real sound source is recorded so that the same level difference and time difference occur when the human ear receives it, so that a sound closer to the original sound can be reproduced.

【0004】この技術は、車両の騒音にも応用され、図
8〜図10に図示した如く車室内の乗員の頭位置に相当
する位置にダミーヘッド7を配置し、乗員の左右耳位置
にあたる位置にマイクロホン8などの集音装置を設置
し、車両走行時の車内騒音をマイクアンプ9を介してD
AT等の記録媒体10に収録し、このようにして収録し
た音を第10図に図示した如くヘッドホン11により再
生して評価者12に提供し、騒音を評価する。尚、図1
0は各々異なる記録媒体10,10′に例えば一定速走
行時や加速走行時の車内騒音を収録し、切換スイッチ1
3で切り換えて、オーディオアンプ14を通しヘッドホ
ン11で再生して、評価者12が加速時の車内騒音や一
定速走行時の車内騒音に対して、いかなる特性を有する
かを比較評価する、いわゆる一対比較評価を例示したも
のである。
This technique is also applied to vehicle noise, and as shown in FIGS. 8 to 10, the dummy head 7 is arranged at a position corresponding to the head position of the occupant in the vehicle compartment, and the position corresponding to the left and right ear positions of the occupant. A sound collection device such as a microphone 8 is installed in the vehicle, and noise inside the vehicle when the vehicle is running
The sound is recorded on the recording medium 10 such as an AT, and the sound thus recorded is reproduced by the headphones 11 and provided to the evaluator 12 to evaluate the noise. Incidentally, FIG.
Reference numeral 0 indicates, for example, in-vehicle noise during constant speed traveling or acceleration traveling is recorded on different recording media 10 and 10 ', and the changeover switch 1
3 and the audio amplifier 14 is used to reproduce the sound through the headphones 11 to compare and evaluate what characteristics the evaluator 12 has with respect to the vehicle interior noise during acceleration and the vehicle interior noise during traveling at a constant speed. This is an example of comparative evaluation.

【0005】[0005]

【発明が解決しようとする課題】このような、ダミーヘ
ッドを利用した官能評価試験において、車両走行状態を
更に精度良く再現するためには、ダミーヘッドのマイク
ロホンによるバイノーラル録音に加えて、視覚情報も必
要であることが知られている。すなわち、映像を見せる
ことにより、評価者の聴覚感度が変化するためと考えら
れ、現実に視覚情報の有無によって騒音の評価結果が異
なることがある。
In such a sensory evaluation test using a dummy head, in order to more accurately reproduce the running condition of the vehicle, in addition to binaural recording by the microphone of the dummy head, visual information is also recorded. It is known to be necessary. That is, it is considered that the auditory sensitivity of the evaluator is changed by showing the image, and the noise evaluation result may differ depending on the presence or absence of the visual information in reality.

【0006】しかしながら、前述の如き従来のダミーヘ
ッドにあっては、人間の耳で聴いている音そのものを収
録し、ヘッドホンにて再生することを目的として作られ
ているため、視覚情報を付加させることができなかっ
た。また、別体のカメラを車室内に設置してダミーヘッ
ドのマイクロホンによる収録音と同期させることにより
視覚情報を付加させることもできるが、車室内の乗員が
受ける視覚的情報を実際の目と耳の位置関係をふまえた
状態で精度良く再現することができず、従って異音や局
所的な音の評価時には評価者に車両乗車状態との相違か
ら違和感を与え精度の良い評価ができないという技術的
課題があった。
However, in the conventional dummy head as described above, since the sound itself heard by the human ear is recorded and reproduced by the headphones, the visual information is added. I couldn't. It is also possible to add visual information by installing a separate camera in the passenger compartment and synchronizing it with the sound recorded by the microphone of the dummy head. It is not possible to accurately reproduce the position relationship of the vehicle, and therefore, when evaluating abnormal noise or local noise, the evaluator feels uncomfortable due to the difference from the vehicle riding state, and it is not possible to perform accurate evaluation. There were challenges.

【0007】この発明はこのような従来の技術に着目し
てなされたものであり、従来のバイノーラル録音等を可
能としたダミーヘッドに、違和感のない精度良い視覚情
報を付加させることができる複合感覚評価用ダミーヘッ
ドを提供するものである。
The present invention has been made by paying attention to such a conventional technique, and it is possible to add a precise sense of visual information to a dummy head capable of conventional binaural recording. An evaluation dummy head is provided.

【0008】[0008]

【課題を解決するための手段】この発明に係る複合感覚
評価用ダミーヘッドは、映像を同時記録するための小型
カメラをダミーヘッドの頭部前面に設けたものである。
A dummy head for composite sensation evaluation according to the present invention is provided with a small camera for simultaneously recording images on the front surface of the head of the dummy head.

【0009】[0009]

【作用】映像を同時記録するための小型カメラを、ダミ
ーヘッドの目の位置に相当する頭部前面に設けたので、
車室内乗員が受ける視聴覚情報を実際の目と耳の位置関
係も含めて再現することができ、視覚情報を加えた精度
の高い騒音評価が行なえる。
Since a small camera for simultaneously recording images is provided on the front face of the head corresponding to the eye position of the dummy head,
The audiovisual information received by the passenger in the passenger compartment can be reproduced including the actual positional relationship between the eyes and ears, and highly accurate noise evaluation including visual information can be performed.

【0010】[0010]

【実施例】以下この発明の好適な実施例を図面に基づい
て説明する。尚、従来と重複する説明は省略する。図1
及び図2はこの発明の一実施例を示す図である。まず構
成を説明すると、人間の頭の形状を模擬したダミーヘッ
ド15の耳16の位置に、バイノーラル録音可能なマイ
クロホン17を設けた。そして、このダミーヘッド15
の頭部前面で左右両目の中央位置に開口18を形成し、
該開口18内に防振ゴム19を介して小型カメラ20を
設置している。そして、これらマイクロホン17及び小
型カメラ20からの出力はそれぞれマイクアンプ21、
パワーユニット22を介して、記録媒体23に収録され
るようになっている。尚、防振ゴム19は車載走行時の
振動を吸収し、小型カメラ20を開口18内において一
種のフローティング状態にするためのものである。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the drawings. It should be noted that the description overlapping with the conventional one is omitted. Figure 1
2 and FIG. 2 are views showing an embodiment of the present invention. First, the structure will be described. A microphone 17 capable of binaural recording is provided at the position of the ear 16 of the dummy head 15 simulating the shape of a human head. And this dummy head 15
Form an opening 18 at the center of both left and right eyes on the front of the head of
A small camera 20 is installed in the opening 18 via a vibration-proof rubber 19. The outputs from the microphone 17 and the small camera 20 are the microphone amplifier 21,
The data is recorded on the recording medium 23 via the power unit 22. The anti-vibration rubber 19 absorbs vibrations when the vehicle is traveling, and makes the small camera 20 in the opening 18 a kind of floating state.

【0011】このダミーヘッド15を車室内助手席等に
設置し、例えば、車両走行騒音などの車室内騒音をマイ
クロホン17でマイクアンプ21を介して集音し、併せ
て走行時の風景を小型カメラ20によって、パワーユニ
ット22を介してビデオ等の記録媒体23に収録するこ
とができる。
This dummy head 15 is installed in the passenger seat of the passenger compartment or the like, and for example, vehicle interior noise such as vehicle running noise is collected by the microphone 17 via the microphone amplifier 21, and at the same time, a landscape of the scenery during traveling is captured by a small camera. By means of 20, it is possible to record on a recording medium 23 such as a video via the power unit 22.

【0012】この収録された音と映像を実験室24等に
設けたヘッドホン装置25やモニター装置26で再生
し、評価パネルを使って騒音の善し悪しや好みなどに対
しての評価を視覚情報と含めて行うことが可能になる。
この実施例で得られる視聴覚情報は、実際の目と耳の位
置関係も含めた精度の高いものなので、正確な評価を行
うことができる。
The recorded sound and image are reproduced by the headphone device 25 and the monitor device 26 provided in the laboratory 24, and the evaluation panel is used to include the evaluation of the goodness and badness of the noise and the visual information. It becomes possible to do it.
Since the audiovisual information obtained in this embodiment has high accuracy including the actual positional relationship between the eyes and ears, accurate evaluation can be performed.

【0013】図3〜図5はこの発明の他の実施例を示す
ものである。この実施例では、実車走行時における乗員
の視線方向を再現するためステアリング舵角信号や、横
G(横方向加速度)センサ信号Sをもとに、ゲイン調節
器27を介して、差動トランス型変位センサ28を用い
て、小型カメラ29を左右方向に回転させることのでき
る回転機構30を設けたものである。つまり、運転者や
助手席乗員は通常カーブや右左折時等において、視線を
自然に曲がる方向へ向ける傾向性があるため、この傾向
性に合わせて小型カメラ29を左右方向へ回転させるよ
うにしたものである。尚、この回転機構30は図示せぬ
スイッチによりON−OFFできるようになっている。
3 to 5 show another embodiment of the present invention. In this embodiment, in order to reproduce the line-of-sight direction of the occupant when the vehicle is traveling, a differential transformer type is obtained via the gain adjuster 27 based on the steering angle signal and the lateral G (lateral acceleration) sensor signal S. The displacement sensor 28 is used to provide a rotation mechanism 30 that can rotate the small camera 29 in the left-right direction. In other words, the driver and the passenger occupants tend to turn their line of sight in a direction that naturally bends when turning a curve or turning left or right. Therefore, the small camera 29 is rotated to the left or right in accordance with this tendency. It is a thing. The rotating mechanism 30 can be turned on and off by a switch (not shown).

【0014】以下、この回転機構30の具体的構造を説
明する。ダミーヘッド31の頭部前面の左右両目の中央
位置には、先の実施例と同様に開口32が形成されてお
り、この開口32の裏側にはパネル33が取付けられて
いる。この、パネル33の中央には小型カメラ29が挿
入される円孔34が形成してあり、該円孔34の上下に
はそれぞれ筒状ネジ部35が設けられている。そして、
この筒状ネジ部35内へ各々螺入させたネジ36の先端
を、小型カメラ29の胴部に凹設した窪み部37に係合
させることにより、小型カメラ29をこのネジ36中心
に左右回転自在とした状態で支持できる。また、この小
型カメラ29の後端部29bにはリング38が挿通して
あり、このリング38の上下筒状ネジ部39に螺入した
ネジ40の先端を、小型カメラ29の後端部29b付近
に凹設した別の窪み部41へ係合させている。そして、
このリング38には前記差動トランス型変位センサ28
からのフック42が引っ掛けてあり、このフック42を
出し入れすることにより、小型カメラ29を左右に回転
できるようになっている。尚、小型カメラ29の前端部
29aと開口32との間には、軟質の防振ゴム43が設
けられている。
The specific structure of the rotating mechanism 30 will be described below. An opening 32 is formed at the center position of the left and right eyes on the front surface of the dummy head 31 as in the previous embodiment, and a panel 33 is attached to the back side of the opening 32. A circular hole 34 into which the small camera 29 is inserted is formed in the center of the panel 33, and cylindrical screw portions 35 are provided above and below the circular hole 34, respectively. And
The small camera 29 is rotated left and right around the screw 36 by engaging the tips of the screws 36 screwed into the cylindrical screw portion 35 with the recesses 37 formed in the body of the small camera 29. It can be supported freely. A ring 38 is inserted through the rear end portion 29b of the small camera 29. It engages with another recessed portion 41 recessed in. And
The ring 38 has the differential transformer type displacement sensor 28.
42 is hooked, and the small camera 29 can be rotated left and right by putting the hook 42 in and out. A soft anti-vibration rubber 43 is provided between the front end 29a of the small camera 29 and the opening 32.

【0015】従って、自動車が例えば右側へ旋回しよう
とすると、そのことをステアリング舵角信号や、横Gセ
ンサ信号Sに基づいてゲイン調節器27が検知し、該ゲ
イン調節器27が差動トランス型変位センサ28にフッ
ク42を引っ張る指令を出力する。フック42が引っ張
られると、リング38を介して、小型カメラ29の後端
部29bが左側へ振られるので、小型カメラ29は逆に
右側へ回転するようになる。このように、この実施例に
よれば自動車を旋回させる方向へ視線を向ける乗員の傾
向性に忠実な映像を記録・再現することが可能となるた
め、車室内乗員が受ける視聴覚情報を更に正確に再現す
ることができ、より精度の高い騒音評価が行なえる効果
がある。その他の構成及び作用効果は先の実施例と同様
に付き重複説明を省略する。
Therefore, when the vehicle tries to turn to the right, for example, the gain adjuster 27 detects the fact based on the steering steering angle signal and the lateral G sensor signal S, and the gain adjuster 27 is a differential transformer type. A command to pull the hook 42 is output to the displacement sensor 28. When the hook 42 is pulled, the rear end 29b of the small camera 29 is swung to the left via the ring 38, so that the small camera 29 is rotated to the right. As described above, according to this embodiment, since it is possible to record and reproduce an image that is faithful to the tendency of the occupant who directs his or her line of sight in the direction of turning the vehicle, it is possible to more accurately detect the audiovisual information received by the occupant in the passenger compartment. There is an effect that it can be reproduced and more accurate noise evaluation can be performed. Other configurations, functions, and effects are the same as those in the previous embodiment, and redundant description will be omitted.

【0016】[0016]

【発明の効果】この発明に係る複合感覚評価用ダミーヘ
ッドは、以上説明してきた如き内容のものであって、映
像を同時記録するための小型カメラを、ダミーヘッドの
目の位置に相当する頭部前面に設けたので、車室内乗員
が受ける視聴覚情報を実際の目と耳の位置関係も含めて
再現することができ、視覚情報を加えた精度の高い騒音
評価が行なえる。また、実施例のように、ステアリング
舵角や横方向加速度に対応して、小型カメラを左右方向
に回転させる機構を設ければ、乗員のカーブ時等におけ
る視覚情報をより忠実に再現することができる。
EFFECTS OF THE INVENTION The dummy head for complex sensation evaluation according to the present invention has the contents as described above, and a small camera for simultaneously recording images is used as a head corresponding to the eye position of the dummy head. Since it is provided on the front surface of the vehicle, it is possible to reproduce the audiovisual information received by the occupant in the vehicle including the actual positional relationship between the eyes and ears, and it is possible to perform highly accurate noise evaluation including the visual information. Further, as in the embodiment, if a mechanism for rotating the small camera in the left-right direction is provided in accordance with the steering angle and the lateral acceleration, the visual information when the occupant is turning or the like can be more faithfully reproduced. it can.

【図面の簡単な説明】[Brief description of drawings]

【図1】この発明の一実施例に係る複合感覚評価用ダミ
ーヘッドを示す構成図である。
FIG. 1 is a configuration diagram showing a dummy feeling evaluation dummy head according to an embodiment of the present invention.

【図2】図1中矢示SB−SB線に相当する断面図であ
る。
FIG. 2 is a sectional view corresponding to line SB-SB shown in FIG.

【図3】この発明の別の実施例に係る複合感覚評価用ダ
ミーヘッドの要部拡大断面図である。
FIG. 3 is an enlarged cross-sectional view of a main part of a dummy head for composite sensation evaluation according to another embodiment of the present invention.

【図4】小型カメラの左右方向への回転機構を示す斜視
図である。
FIG. 4 is a perspective view showing a horizontal rotation mechanism of the small camera.

【図5】図3中矢示DA方向から見た背面図である。5 is a rear view seen from the direction of the arrow DA in FIG.

【図6】従来例に係るダミーヘッドを示す側面図であ
る。
FIG. 6 is a side view showing a dummy head according to a conventional example.

【図7】図6中矢示SA−SA線に相当する断面図であ
る。
7 is a cross-sectional view corresponding to the line SA-SA indicated by the arrow in FIG.

【図8】別の従来例に係るダミーヘッドの車室内マイク
ロホン設置状況を示す概略図である。
FIG. 8 is a schematic view showing a situation in which a dummy head according to another conventional example is installed in a vehicle compartment microphone.

【図9】マイクロホンにて集音した騒音をマイクアンプ
を介して記録媒体へ録音する状態を示す概略図である。
FIG. 9 is a schematic diagram showing a state in which noise collected by a microphone is recorded on a recording medium via a microphone amplifier.

【図10】録音した音をヘッドホンで再生して評価する
状態を示す概略図である。
FIG. 10 is a schematic diagram showing a state in which recorded sound is reproduced by headphones and evaluated.

【符号の説明】[Explanation of symbols]

15、31 ダミーヘッド 17 マイクロホン 20、29 小型カメラ 30 回転機構 15, 31 Dummy head 17 Microphone 20, 29 Small camera 30 Rotation mechanism

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 実耳聴を再現するための音を収録するマ
イクロホンが備えられているダミーヘッドにおいて、映
像を同時記録するための小型カメラをダミーヘッドの頭
部前面に設けたことを特徴とする複合感覚評価用ダミー
ヘッド。
1. A dummy head provided with a microphone for recording sound for reproducing actual hearing, wherein a small camera for simultaneously recording images is provided on the front surface of the head of the dummy head. A dummy head for complex sensory evaluation.
【請求項2】 ステアリング舵角や横方向加速度に対応
して、小型カメラを左右方向に回転させる機構が設けら
れている請求項1記載の複合感覚評価用ダミーヘッド。
2. The dummy head for complex sensation evaluation according to claim 1, further comprising a mechanism for rotating the small camera in the left-right direction in response to the steering angle and the lateral acceleration.
JP3337869A 1991-11-28 1991-11-28 Dummy head for evaluating composite sense Pending JPH05153687A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3337869A JPH05153687A (en) 1991-11-28 1991-11-28 Dummy head for evaluating composite sense

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3337869A JPH05153687A (en) 1991-11-28 1991-11-28 Dummy head for evaluating composite sense

Publications (1)

Publication Number Publication Date
JPH05153687A true JPH05153687A (en) 1993-06-18

Family

ID=18312757

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3337869A Pending JPH05153687A (en) 1991-11-28 1991-11-28 Dummy head for evaluating composite sense

Country Status (1)

Country Link
JP (1) JPH05153687A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996010884A1 (en) * 1994-10-01 1996-04-11 Central Research Laboratories Limited A camera and accessory
EP1052877A2 (en) * 1999-05-10 2000-11-15 Sony Corporation Vehicle-carried sound reproduction apparatus
KR20040016093A (en) * 2002-08-16 2004-02-21 온디지털테크(주) AMR (Acoustic Refinement Machine)
JP2008207793A (en) * 2007-02-01 2008-09-11 Nissan Motor Co Ltd Acoustic sense monitoring equipment for vehicle and method
WO2009025031A1 (en) * 2007-08-21 2009-02-26 Pioneer Corporation Acoustic reproduction system, recording medium, and electronic information providing system
DE102012208825A1 (en) 2011-06-02 2012-12-06 Denso Corporation 3D AUDIO DEVICE
JP2018137682A (en) * 2017-02-23 2018-08-30 株式会社アコー Dummy head and ear plug
JP2018142769A (en) * 2017-02-27 2018-09-13 株式会社アコー Dummy head and ear plug
JP2019032269A (en) * 2017-08-09 2019-02-28 国立大学法人神戸大学 Mechanical sound measurement apparatus, mechanical sound reproduction apparatus, and experiential education method
RU204492U1 (en) * 2019-12-06 2021-05-27 Федеральное государственное бюджетное образовательное учреждение высшего образования "Владимирский Государственный Университет имени Александра Григорьевича и Николая Григорьевича Столетовых" (ВлГУ) Measuring stand for the study of personal hearing protection
JP2023502406A (en) * 2019-11-18 2023-01-24 北京石頭世紀科技股▲ふん▼有限公司 Camera device and cleaning robot

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996010884A1 (en) * 1994-10-01 1996-04-11 Central Research Laboratories Limited A camera and accessory
EP1052877A2 (en) * 1999-05-10 2000-11-15 Sony Corporation Vehicle-carried sound reproduction apparatus
EP1052877A3 (en) * 1999-05-10 2005-03-23 Sony Corporation Vehicle-carried sound reproduction apparatus
KR100718478B1 (en) * 1999-05-10 2007-05-16 소니 가부시끼 가이샤 Vehicle-carried sound reproduction apparatus
KR20040016093A (en) * 2002-08-16 2004-02-21 온디지털테크(주) AMR (Acoustic Refinement Machine)
JP2008207793A (en) * 2007-02-01 2008-09-11 Nissan Motor Co Ltd Acoustic sense monitoring equipment for vehicle and method
WO2009025031A1 (en) * 2007-08-21 2009-02-26 Pioneer Corporation Acoustic reproduction system, recording medium, and electronic information providing system
DE102012208825A1 (en) 2011-06-02 2012-12-06 Denso Corporation 3D AUDIO DEVICE
JP2018137682A (en) * 2017-02-23 2018-08-30 株式会社アコー Dummy head and ear plug
JP2018142769A (en) * 2017-02-27 2018-09-13 株式会社アコー Dummy head and ear plug
JP2019032269A (en) * 2017-08-09 2019-02-28 国立大学法人神戸大学 Mechanical sound measurement apparatus, mechanical sound reproduction apparatus, and experiential education method
JP2023502406A (en) * 2019-11-18 2023-01-24 北京石頭世紀科技股▲ふん▼有限公司 Camera device and cleaning robot
RU204492U1 (en) * 2019-12-06 2021-05-27 Федеральное государственное бюджетное образовательное учреждение высшего образования "Владимирский Государственный Университет имени Александра Григорьевича и Николая Григорьевича Столетовых" (ВлГУ) Measuring stand for the study of personal hearing protection

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