JP5290896B2

JP5290896B2 - Fixing device

Info

Publication number: JP5290896B2
Application number: JP2009169149A
Authority: JP
Inventors: 雅直大脇; 健史財満
Original assignee: Honda Motor Co Ltd; Kumagai Gumi Co Ltd
Current assignee: Honda Motor Co Ltd; Kumagai Gumi Co Ltd
Priority date: 2009-07-17
Filing date: 2009-07-17
Publication date: 2013-09-18
Anticipated expiration: 2029-07-17
Also published as: JP2011024112A

Description

本発明は、５個のマイクロフォンで採取した音のデータを用いて音源の方向を推定する音源方向推定方法に使用する５個のマイクロフォンや、５個のマイクロフォンで採取した音のデータとカメラで撮影した映像のデータとを用いて音源の位置を推定する音源位置推定方法に使用する５個のマイクロフォン及びカメラを所定の関係位置に正確に維持可能な固定装置に関するものである。 In the present invention, five microphones used in a sound source direction estimating method for estimating the direction of a sound source using sound data collected by five microphones, sound data collected by five microphones, and photographing by a camera The present invention relates to a fixing device capable of accurately maintaining five microphones and a camera used in a sound source position estimation method for estimating the position of a sound source using the image data thus obtained at predetermined positions.

従来、音の到来方向を推定する方法としては、多数のマイクロフォンを等間隔に配置したマイクロフォンアレーを構築し、基準となるマイクロフォンに対する各マイクロフォンの位相差から音波の到来方向である音源の方向を推定する、いわゆる音響学的手法が考案されている（例えば、非特許文献１参照）。
一方、計測点に配置された複数のマイクロフォンの出力信号の位相差からではなく、複数のマイクロフォンから互いに交わる直線状に配置された複数のマイクロフォン対を構成し、対となる２つのマイクロフォン間の位相差に相当する到達時間差と、他の対となる２つのマイクロフォン間の到達時間差との比から音源の方向を推定する方法が提案されている（例えば、特許文献１〜３参照）。
具体的には、図１０に示すように、４個のマイクロフォンＭ１〜Ｍ４を、互いに直交する２直線上にそれぞれ所定の間隔で配置された２組のマイクロフォン対（Ｍ１，Ｍ３）及びマイクロフォン対（Ｍ２，Ｍ４）を構成するように配置し、上記マイクロフォン対（Ｍ１，Ｍ３）を構成するマイクロフォンＭ１，Ｍ３に入力する音圧信号の位相差と、上記マイクロフォン対（Ｍ２，Ｍ４）を構成するマイクロフォンＭ２，Ｍ４に入力する音圧信号の到達時間差との比から、計測点と音源の位置との水平角θを推定するとともに、第５のマイクロフォンＭ５を上記マイクロフォンＭ１〜Ｍ４の作る平面上にない位置に配置して、更に４組のマイクロフォン対（Ｍ５, Ｍ１），（Ｍ５, Ｍ２），（Ｍ５, Ｍ３），（Ｍ５, Ｍ４）を構成し、上記各マイクロフォン対を構成するマイクロフォン間の到達時間差から、計測点と音源の位置との成す仰角φを推定する。
これにより、上記マイクロフォンアレーを用いて音源の方向を推定する場合に比較して、少ないマイクロフォン数で音源の方向を正確に推定することができる。
また、このとき、ＣＣＤカメラ等の映像採取手段を設けて上記推定された音源の方向の映像を撮影した後、この映像のデータと音源の方向のデータとを合成して、映像中に上記推定した音源方向と音圧レベルとを図形に表示するようにすれば、音源を視覚的に把握することができる。 Conventionally, as a method for estimating the direction of sound arrival, a microphone array in which a large number of microphones are arranged at equal intervals is constructed, and the direction of the sound source that is the direction of sound wave arrival is estimated from the phase difference of each microphone relative to the reference microphone. A so-called acoustic technique has been devised (see, for example, Non-Patent Document 1).
On the other hand, not a phase difference between output signals of a plurality of microphones arranged at a measurement point, but a plurality of microphone pairs arranged in a straight line intersecting each other from the plurality of microphones, and the position between the two microphones constituting the pair There has been proposed a method for estimating the direction of a sound source from a ratio between an arrival time difference corresponding to a phase difference and an arrival time difference between two pairs of other microphones (see, for example, Patent Documents 1 to 3).
Specifically, as shown in FIG. 10, two microphone pairs (M1, M3) and microphone pairs (four microphones M1 to M4) are arranged at predetermined intervals on two straight lines orthogonal to each other. M2, M4) are arranged so as to constitute the microphone pair (M1, M3), and the microphones constituting the microphone pair (M2, M4). The horizontal angle θ between the measurement point and the position of the sound source is estimated from the ratio of the arrival time difference between the sound pressure signals input to M2 and M4, and the fifth microphone M5 is not on the plane formed by the microphones M1 to M4. Further, four microphone pairs (M5, M1), (M5, M2), (M5, M3), (M5, M4) are configured to each of the microphones. The elevation angle φ formed by the measurement point and the position of the sound source is estimated from the arrival time difference between the microphones constituting the microphone pair.
As a result, the direction of the sound source can be accurately estimated with a smaller number of microphones than in the case where the direction of the sound source is estimated using the microphone array.
At this time, a video sampling means such as a CCD camera is provided to capture a video of the estimated direction of the sound source, and then the video data and the data of the direction of the sound source are combined to generate the estimated value in the video. If the sound source direction and the sound pressure level are displayed in a figure, the sound source can be visually grasped.

特開２００２−１８１９１３号公報Japanese Patent Laid-Open No. 2002-181913 特開２００６−３２４８９５号公報JP 2006-324895 A 特開２００８−２２４２５９号公報JP 2008-224259 A

大賀寿郎，山崎芳男，金田豊，音響システムとディジタル処理，コロナ社，１９９５Toshiro Oga, Yoshio Yamazaki, Yutaka Kaneda, Acoustic System and Digital Processing, Corona, 1995

従来は、５個の小型マイクロフォンを図１０に示すような位置関係に正確に維持できず、５個のマイクロフォンで採取した音データに基いて行われる音源の方向や音源の位置の推定精度が落ちるという問題点があった。
本発明は、５個のマイクロフォンの位置関係を正確に維持でき、５個のマイクロフォンで採取した音データに基いて行われる音源の方向や音源の位置の推定精度を向上できる固定装置を提供する。 Conventionally, five small microphones cannot be accurately maintained in the positional relationship as shown in FIG. 10, and the accuracy of estimation of the direction of the sound source and the position of the sound source performed based on the sound data collected by the five microphones is lowered. There was a problem.
The present invention provides a fixing device that can accurately maintain the positional relationship of five microphones and can improve the estimation accuracy of the direction of the sound source and the position of the sound source performed based on sound data collected by the five microphones.

本発明に係る固定装置は、５個のマイクロフォンで採取した音のデータを用いて音源の方向を推定する音源方向推定方法に使用する５個のマイクロフォンを固定する際に、一方の一対の２個のマイクロフォンの中心同士が第１の直線上に所定の間隔で配置され、他方の一対の２個のマイクロフォンの中心同士が第１の直線と直交する第２の直線上に所定の間隔で配置され、残りの１個のマイクロフォンの中心が他の４個のマイクロフォンの中心同士を繋ぐ四角平面上とは離れた位置に配置されるような所定の位置関係に、前記５個のマイクロフォンを固定するための固定装置であって、前記５個のマイクロフォンをそれぞれ個別に固定する５つのマイクロフォン固定筒体と、これら各マイクロフォン固定筒体を固定する固定台とを備え、前記各マイクロフォン固定筒体は、前記マイクロフォンに接続された信号線が前記マイクロフォン固定筒体の筒内を経由して筒の一方の開口から筒外に引き出された状態で前記マイクロフォンを固定するためのマイクロフォン固定部を筒の他方の開口側に備え、前記他の４個のマイクロフォンを固定するための各マイクロフォン固定筒体は筒の長さが同じ長さに形成され、前記残りの１個のマイクロフォンを固定するためのマイクロフォン固定筒体は筒の長さが前記他の４個のマイクロフォンを固定するための各マイクロフォン固定筒体の筒の長さよりも長く形成され、前記固定台は、前記５つのマイクロフォン固定筒体が個々に設置される５つの設置孔と、当該設置孔の底面と固定台の表面とに貫通する信号線引出用孔とを備え、前記５つの設置孔の孔の直径寸法、及び、深さ寸法は同じ寸法に形成され、前記各マイクロフォン固定筒体の前記各マイクロフォン固定部に前記マイクロフォンがそれぞれ固定され、かつ、前記マイクロフォン固定筒体の筒の一方の開口側が前記設置孔内に挿入されるとともに、前記信号線が前記設置孔及び信号線引出用孔経由で信号線引出用孔の外に引き出された状態で、前記マイクロフォン固定筒体の一方の開口の端面と前記設置孔の底面とが接触した状態となるように前記各マイクロフォン固定筒体が前記各設置孔に固定されることにより、５つのマイクロフォンが前記所定の位置関係に固定されるので、５個のマイクロフォンの位置関係を正確に維持でき、５個のマイクロフォンで採取した音データに基いて行われる音源の方向や音源の位置の推定精度を向上できるようになる。
前記固定台の表面と前記設置孔とに貫通するねじ孔と、このねじ孔に締結されて前記マイクロフォン固定筒体を前記設置孔に固定する固定ねじとを備えたことにより、マイクロフォン固定筒体を設置孔に容易に着脱することができるので、マイクロフォンが故障した場合や信号線が断線した場合などにおいて交換作業や修理作業が容易となる。
本発明に係る別の固定装置は、５個のマイクロフォンで採取した音のデータとカメラで撮影した映像のデータとを用いて音源の位置を推定する音源位置推定方法に使用する５個のマイクロフォンとカメラとを固定するための固定装置であって、一方の一対の２個のマイクロフォンの中心同士が第１の直線上に所定の間隔で配置され、他方の一対の２個のマイクロフォンの中心同士が第１の直線と直交する第２の直線上に所定の間隔で配置され、残りの１個のマイクロフォンの中心が他の４個のマイクロフォンの中心同士を繋ぐ四角平面上とは離れた位置に配置されるような所定の位置関係に、前記５個のマイクロフォンを固定するための固定装置と、カメラ固定装置とを備え、前記５個のマイクロフォンを固定するための固定装置は、前記５個のマイクロフォンをそれぞれ個別に固定する５つのマイクロフォン固定筒体と、これら各マイクロフォン固定筒体を固定する固定台とを備え、前記各マイクロフォン固定筒体は、前記マイクロフォンに接続された信号線が前記マイクロフォン固定筒体の筒内を経由して筒の一方の開口から筒外に引き出された状態で前記マイクロフォンを固定するためのマイクロフォン固定部を筒の他方の開口側に備え、前記他の４個のマイクロフォンを固定するための各マイクロフォン固定筒体は筒の長さが同じ長さに形成され、前記残りの１個のマイクロフォンを固定するためのマイクロフォン固定筒体は筒の長さが前記他の４個のマイクロフォンを固定するための各マイクロフォン固定筒体の筒の長さよりも長く形成され、前記固定台は、前記５つのマイクロフォン固定筒体が個々に設置される５つの設置孔と、当該設置孔の底面と固定台の表面とに貫通する信号線引出用孔とを備え、前記５つの設置孔の孔の直径寸法、及び、深さ寸法は同じ寸法に形成され、前記各マイクロフォン固定筒体の前記各マイクロフォン固定部に前記マイクロフォンがそれぞれ固定され、かつ、前記マイクロフォン固定筒体の筒の一方の開口側が前記設置孔内に挿入されるとともに、前記信号線が前記設置孔及び信号線引出用孔経由で信号線引出用孔の外に引き出された状態で、前記マイクロフォン固定筒体の一方の開口の端面と前記設置孔の底面とが接触した状態となるように前記各マイクロフォン固定筒体が前記各設置孔に固定されることにより、５つのマイクロフォンが前記所定の位置関係に固定され、前記カメラ固定装置は、前記カメラが固定されるカメラ固定部と、当該カメラ固定部と前記固定台とを連結する連結部材とを備え、前記カメラ固定部は、ベースと、当該ベースの両端より立ち上るように設けられた２つのカメラ支持柱とを備え、当該各カメラ支持柱は固定ねじ貫通孔を備え、前記連結部材は、下端部及び上端部にそれぞれ固定ねじ貫通孔を備え、固定ねじを前記連結部材の下端部の固定ねじ貫通孔とカメラ支持柱の固定ねじ貫通孔とに通して前記カメラの側面に形成されたねじ孔に締結することによって、前記カメラが前記カメラ固定部に固定されるとともに、前記カメラ固定部に前記連結部材が固定され、かつ、固定ねじを前記連結部材の上端部の固定ねじ貫通孔に通して前記固定台の連結締結用のねじ孔に締結することによって、前記固定台と前記連結部材とが固定され、前記各マイクロフォン固定筒体を介して固定台に固定された前記５個のマイクロフォンと前記カメラとが固定されるので、５個のマイクロフォンの位置関係を正確に維持でき、かつ、５個のマイクロフォンと１つのカメラとを一緒に固定できるので、５個のマイクロフォンで採取した音データ及びカメラで採取した映像データに基いて行われる音源の位置の推定精度を向上できる。
The fixing device according to the present invention fixes a pair of two microphones when fixing five microphones used in a sound source direction estimating method for estimating a sound source direction using sound data collected by five microphones. The centers of the two microphones are arranged at a predetermined interval on the first straight line, and the centers of the other pair of two microphones are arranged at a predetermined interval on the second straight line orthogonal to the first straight line. , a predetermined positional relationship such that the center of the remaining one microphone is located away from the on square plane connecting the centers of the other four microphones, for securing the five microphones of a fixing device, comprising a five microphones fixed cylinder body fixed individually the five microphones, respectively, and a fixing base for fixing the respective microphones fixed tube body, the Microphone fixed cylinder body, a microphone fixed for fixing the microphone in a state of a signal line connected to the microphone is drawn to the out-of-cylinder from one opening of the tube via the cylinder of the microphone fixed cylindrical member includes a section on the other opening side of the cylinder, the microphones fixed cylindrical member for securing the other four microphones length of the cylinder is formed in the same length, fixing the remaining one microphone microphone fixed cylindrical member for being formed longer than the length of the cylinder of the microphones fixed cylindrical member for length fixing the other four microphones of the tube, said fixing base, the five microphone fixed comprising five installation holes cylindrical body is installed individually, and a signal line lead hole passing through in the fixing base surface and the bottom surface of the installation hole, the five settings Diameter of holes in the hole, and the depth dimension is formed in the same size, the said microphone to the respective microphone fixed portion of the microphones fixed cylindrical member is fixed respectively, and one of the cylinder of the microphone fixed cylindrical member And the signal line is drawn out of the signal line lead-out hole via the installation hole and the signal line lead-out hole, and one of the microphone fixing cylinders is inserted. by the so as to be in a state of the end surface of the opening and the bottom surface of the installation hole is in contact the microphones fixed cylindrical member is fixed to the respective installation hole, since the five microphones are fixed to the predetermined positional relationship The positional relationship of the five microphones can be accurately maintained, and the direction of the sound source and the position of the sound source are estimated based on the sound data collected by the five microphones. The accuracy can be improved.
A microphone fixing cylinder is provided by including a screw hole penetrating the surface of the fixing base and the installation hole, and a fixing screw fastened to the screw hole to fix the microphone fixing cylinder to the installation hole. Since it can be easily attached to and detached from the installation hole, replacement work and repair work are facilitated when the microphone breaks down or the signal line is disconnected.
Another fixing device according to the present invention, the five microphones used in the sound source position estimating method for estimating the position of the sound source by using the five images taken by the data and camera sounds collected by the microphone data and a camera to a fixing device for fixed, centers of the one pair of two microphones are arranged at predetermined intervals in the first straight line, centers of the other of the pair of two microphones There are disposed at predetermined intervals in the second straight line orthogonal to the first straight line, at a position away from the on square plane in which the center of the remaining one microphone connecting centers of the other four microphones a predetermined positional relationship such as to be disposed, a fixing device for fixing the five microphones, a camera fixing device, fixing device for fixing the five microphones, the 5 5 and microphone fixed cylinder body, and a fixing base for fixing the respective microphones fixed cylinder body, wherein each microphone fixed cylinder body, a signal line connected to the microphone the microphone to the microphone respectively fixed separately A microphone fixing portion is provided on the other opening side of the cylinder to fix the microphone in a state of being pulled out of the cylinder from one opening of the cylinder via the inside of the fixed cylinder, and the other four The microphone fixing cylinders for fixing the microphones have the same cylinder length, and the microphone fixing cylinder for fixing the remaining one microphone has the cylinder length of the other four. is longer than the length of the cylinder of the microphones fixed cylindrical member for fixing the number of microphones, the fixing base, the five And five installation holes Ikurofon fixed cylindrical member is installed individually, and a signal line lead hole passing through in the fixing base surface and the bottom surface of the installation hole, the five diameter of the installation hole of the hole, The depth dimensions are the same, the microphones are fixed to the microphone fixing portions of the microphone fixing cylinders , and one opening side of the cylinder of the microphone fixing cylinder is in the installation hole. And the signal line is drawn out of the signal line drawing hole via the installation hole and the signal line drawing hole, and an end face of one opening of the microphone fixing cylinder and the setting hole of the way bottom surface and comes in contact by the microphones fixed cylindrical member is fixed to the respective installation hole, five microphones are fixed to the predetermined positional relationship, before Serial camera fixing device includes a camera fixing portion to which the camera is fixed, and a connecting member for connecting the fixing stand with the camera fixing unit, the camera fixing unit includes a base, rises from both ends of the base Each of the camera support columns is provided with a fixing screw through hole, and the connecting member is provided with a fixing screw through hole at each of a lower end portion and an upper end portion, The camera is fixed to the camera fixing part by passing through the fixing screw through hole at the lower end of the connecting member and the fixing screw through hole of the camera support column and fastening to the screw hole formed on the side surface of the camera. In addition, the connecting member is fixed to the camera fixing portion, and a fixing screw is passed through a fixing screw through hole at an upper end portion of the connecting member to be fastened to a screw hole for connecting and fastening the fixing base. I, wherein the fixing base and the connecting and member are fixed, the so each microphone fixed cylinder the five microphones fixed to the fixing table through the body and the camera is fixed, five microphones Therefore, the five microphones and one camera can be fixed together, so that the sound source collected based on the sound data collected by the five microphones and the video data collected by the camera can be maintained. The position estimation accuracy can be improved.

固定装置を示す斜視図（実施形態）。The perspective view which shows a fixing device (embodiment). 固定装置の分解斜視図（実施形態）。The disassembled perspective view of a fixing device (embodiment). （ａ）は固定装置の平面図、（ｂ）は固定装置の断面図（図３（ａ）のＡ−Ａ断面）（実施形態）。(A) is a top view of a fixing device, (b) is sectional drawing of the fixing device (AA cross section of Fig.3 (a)) (embodiment). 音データ採取装置の平面図（実施形態）。The top view of sound data collection device (embodiment). 音データ採取装置の断面図（図４のＡ−Ａ断面）（実施形態）。Sectional drawing (AA cross section of FIG. 4) of a sound data collection device (embodiment). 音データ及び映像データ採取装置を示す斜視図（実施形態）。The perspective view which shows sound data and a video data collection device (embodiment). 音データ及び映像データ採取装置の分解斜視図（実施形態）。FIG. 3 is an exploded perspective view of the sound data and video data collection device (embodiment). （ａ）は固定装置の平面図、（ｂ）は固定装置の断面図（他の実施形態）。(A) is a top view of a fixing device, (b) is sectional drawing (other embodiment) of a fixing device. 音及び映像採取部の車内での取付位置を示す図（実施形態）。The figure which shows the attachment position in the vehicle of a sound and image | video collection part (embodiment). マイクロフォンの位置関係を示す図（従来）。The figure which shows the positional relationship of a microphone (conventional).

図１に示すように、実施形態の固定装置１は、５個のマイクロフォン２（２Ａ；２Ｂ；２Ｃ；２Ｄ；２Ｅ）で採取した音のデータに基いて音源の方向を推定する方法に使用する比較的小型の５個のマイクロフォン２Ａ〜２Ｅを所定の位置関係に確実に固定するためのものである。
即ち、固定装置１は、図６に示すように、一方の一対の２個のマイクロフォン２Ａ；２Ｂの中心２Ｘ；２Ｘ同士が第１の直線２Ｆ上に所定の間隔で配置され、他方の一対の２個のマイクロフォン２Ｃ；２Ｄの中心２Ｘ；２Ｘ同士が第１の直線２Ｆと直交する第２の直線２Ｇ上に所定の間隔で配置され、１個のマイクロフォン２Ｅの中心２Ｘが前記４個のマイクロフォン２Ａ；２Ｂ；２Ｃ；２Ｄの中心２Ｘ同士を繋ぐ四角平面上とは離れた位置に配置されるような所定の位置関係に、５個のマイクロフォン２Ａ〜２Ｅを固定するための固定装置である。
５個のマイクロフォン２Ａ〜２Ｅが所定の位置関係に固定装置１により固定され、音源の方向の推定精度を向上させることが可能な音データを図外の音源方向推定装置に供給できる音データ採取装置９９（図７参照）が形成される。 As shown in FIG. 1, the fixing device 1 according to the embodiment is used in a method of estimating the direction of a sound source based on sound data collected by five microphones 2 (2A; 2B; 2C; 2D; 2E). This is for securely fixing the five relatively small microphones 2A to 2E in a predetermined positional relationship.
That is, as shown in FIG. 6, the fixing device 1 includes a pair of two microphones 2A; the centers 2X of 2B; 2X are arranged at a predetermined interval on the first straight line 2F, and the other pair of microphones 2A; Two microphones 2C; 2D centers 2X; 2X are arranged at predetermined intervals on a second straight line 2G orthogonal to the first straight line 2F, and the center 2X of one microphone 2E is the four microphones. 2A; 2B; 2C; 2D is a fixing device for fixing the five microphones 2A to 2E in a predetermined positional relationship such that they are arranged at positions separated from the square plane connecting the centers 2X of the two.
A sound data sampling device in which five microphones 2A to 2E are fixed to a predetermined positional relationship by the fixing device 1 and sound data capable of improving the accuracy of estimating the direction of the sound source can be supplied to a sound source direction estimating device (not shown). 99 (see FIG. 7) is formed.

図２に示すように、固定装置１は、マイクロフォン２Ａ〜２Ｅがそれぞれ固定されるマイクロフォン固定筒体３（３Ａ；３Ｂ；３Ｃ；３Ｄ；３Ｅ）と、マイクロフォン固定筒体３Ａ〜３Ｅが固定される固定台４とを備える。 As shown in FIG. 2, in the fixing device 1, the microphone fixing cylinder 3 (3A; 3B; 3C; 3D; 3E) to which the microphones 2A to 2E are respectively fixed, and the microphone fixing cylinders 3A to 3E are fixed. And a fixed base 4.

固定台４は、設置孔５と、信号線引出用孔６と、ねじ孔７とを備える。
固定台４は、マイクロフォン固定筒体３の設置高さの基準となる平面により形成された基準面１０と、基準面１０と平行な信号線引出面１１と、側面１２とを備えた例えば真鍮製の中実のブロック（塊）により構成される。互いに平行に対向する同一形状の基準面１０と信号線引出面１１とが十字形に形成される。基準面１０の外周縁と信号線引出面１１の外周縁とを連結する面により側面１２（固定台４の表面）が構成される。即ち、固定台４は、対向する一対の面が正方形である直方体ブロックの正方形の４つの角部を除去したような十字形状のブロックにより形成される。
図３（ａ）；（ｂ）に示すように、設置孔５は、基準面１０から信号線引出面１１の方向に向けて延長するように形成された有底の断面円形孔により構成される。
設置孔５は、固定するマイクロフォン２の数に対応して５個設けられる。設置孔５としては、１つの中央設置孔部５Ｅと、４つの周辺設置孔部５Ａ；５Ｂ；５Ｃ；５Ｄとを備える。
１つの中央設置孔部５Ｅは、固定台４の十字の中央部２０Ｅの基準面１０に形成される。４つの周辺設置孔部５Ａ〜５Ｄは、中央部２０Ｅと連続する固定台４の十字の４つの枝部２０Ａ；２０Ｂ；２０Ｃ；２０Ｄの基準面１０にそれぞれ形成される。４つの枝部２０Ａ〜２０Ｄは、図３に示すように、基準面１０の中央を通過する基準面１０と垂直な中心線１０Ｘを中心とする円の周方向に各々９０度隔てて隣り合うように中央部２０Ｅと連続する。５つの設置孔５の孔の直径寸法、及び、深さ寸法は、同じ寸法に形成される。
互いに隣り合う枝部２０Ａ〜２０Ｄの側面１２ａ同士は、互いに直交な面により形成される。中央部２０Ｅの側面１２は、互いに隣り合う枝部２０Ａ〜２０Ｄの側面１２ａ同士を繋ぐ４つの平面１２ｂにより形成される。各枝部の側面は、３つの側面１２により形成される。この３つの側面１２のうちの２つの側面１２ａ；１２ａは互いに平行に対向し、残りの側面１２ｃ又は１２ｄは当該２つの側面１２ａ；１２ａに対して直交する面により形成される。
図３（ｂ）に示すように、信号線引出用孔６は、設置孔５の底面２５と信号線引出面１１（固定台４の表面）とに貫通する貫通孔により形成される。
ねじ孔７としては、１つの中央マイクロフォン固定筒体固定用のねじ孔７Ｅと、４つの周辺マイクロフォン固定筒体固定用のねじ孔７Ａ；７Ｂ；７Ｃ；７Ｄと、後述する連結締結用のねじ孔２６を備える。中央マイクロフォン固定筒体固定用のねじ孔７Ｅは、中央部２０Ｅの側面１２ｂを形成する４つの平面のうちの１つの平面と中央設置孔部５Ｅとに貫通するねじ孔により形成される。周辺マイクロフォン固定筒体固定用のねじ孔７Ａ〜７Ｄは、枝部２０Ａ〜２０Ｄの互いに平行に対向する２つの側面１２ａ；１２ａのうちの一方の側面１２ａと周辺設置孔部５Ａ〜５Ｄとに貫通するねじ孔により形成される。連結締結用のねじ孔２６は、上記中心線１０Ｘを中心とする円の周方向に１８０度隔てて設けられた一対の枝部２０Ａ；２０Ｂの側面１２ｄ；１２ｄ、つまり、当該一対の枝部２０Ａ；２０Ｂにおいて互いに平行に対向する一対の側面１２ｄ；１２ｄに２つずつ設けられる。 The fixed base 4 includes an installation hole 5, a signal line drawing hole 6, and a screw hole 7.
The fixing base 4 includes a reference surface 10 formed by a flat surface that serves as a reference for the installation height of the microphone fixing cylinder 3, a signal line lead-out surface 11 parallel to the reference surface 10, and a side surface 12, for example, made of brass. It is composed of solid blocks. The reference surface 10 and the signal line drawing surface 11 having the same shape and facing each other in parallel are formed in a cross shape. A side surface 12 (the surface of the fixed base 4) is configured by a surface connecting the outer peripheral edge of the reference surface 10 and the outer peripheral edge of the signal line drawing surface 11. That is, the fixed base 4 is formed by a cross-shaped block in which four corners of a square block having a square pair of opposing surfaces are removed.
As shown in FIGS. 3A and 3B, the installation hole 5 is constituted by a bottomed cross-sectional circular hole formed so as to extend from the reference surface 10 toward the signal line drawing surface 11. .
Five installation holes 5 are provided corresponding to the number of microphones 2 to be fixed. The installation hole 5 includes one central installation hole 5E and four peripheral installation holes 5A; 5B; 5C; 5D.
One central installation hole 5 E is formed in the reference surface 10 of the cross-shaped central part 20 E of the fixed base 4. The four peripheral installation holes 5A to 5D are respectively formed on the reference surfaces 10 of the four branches 20A; 20B; 20C; 20D of the cross of the fixed base 4 that is continuous with the center 20E. As shown in FIG. 3, the four branch portions 20 A to 20 D are adjacent to each other by 90 degrees in the circumferential direction of a circle having a center line 10 X perpendicular to the reference surface 10 passing through the center of the reference surface 10. To the central portion 20E. The diameter dimension and the depth dimension of the five installation holes 5 are formed in the same dimension.
The side surfaces 12a of the branch portions 20A to 20D adjacent to each other are formed by surfaces orthogonal to each other. The side surface 12 of the central portion 20E is formed by four flat surfaces 12b that connect the side surfaces 12a of the branch portions 20A to 20D adjacent to each other. The side surface of each branch is formed by three side surfaces 12. Of the three side faces 12, two side faces 12a; 12a face each other in parallel, and the remaining side faces 12c or 12d are formed by faces orthogonal to the two side faces 12a; 12a.
As shown in FIG. 3B, the signal line drawing hole 6 is formed by a through-hole penetrating the bottom surface 25 of the installation hole 5 and the signal line drawing surface 11 (the surface of the fixing base 4).
The screw hole 7 includes one screw hole 7E for fixing the central microphone fixing cylinder, four screw holes 7A; 7B; 7C; 7D for fixing the peripheral microphone fixing cylinder, and screw holes for connection fastening described later. 26. The screw hole 7E for fixing the central microphone fixing cylinder is formed by a screw hole penetrating through one of the four planes forming the side surface 12b of the central portion 20E and the central installation hole portion 5E. Screw holes 7A to 7D for fixing the peripheral microphone fixing cylinders penetrate through one side surface 12a of the two side surfaces 12a; 12a of the branch portions 20A to 20D and the peripheral installation holes 5A to 5D. Formed by a screw hole. The screw holes 26 for coupling fastening are a pair of branch parts 20A; side surfaces 12d; A pair of side surfaces 12d facing each other in parallel at 20B;

上記中心線１０Ｘを中心とする円の周方向に１８０度隔てて設けられた一方の一対の枝部２０Ａ；２０Ｂの基準面１０にそれぞれ形成された２つの周辺設置孔部５Ａ：５Ｂの孔の中心５Ｘと中央設置孔部５Ｅの孔の中心５Ｘとが基準面１０と平行な第１の直線５Ｆ上に位置され、上記中心線１０Ｘを中心とする円の周方向に１８０度隔てて設けられた他方の一対の枝部２０Ｃ；２０Ｄの基準面１０にそれぞれ形成された２つの周辺設置孔部５Ｃ；５Ｄの孔の中心５Ｘと中央設置孔部５Ｅの孔の中心５Ｘとが基準面１０と平行な第２の直線５Ｇ上に位置され、第１の直線５Ｆと第２の直線５Ｇとが直交する関係にある。そして、上記一方の一対の枝部枝部２０Ａ；２０Ｂの基準面１０にそれぞれ形成された周辺設置孔部５Ａ：５Ｂの孔の中心５Ｘ；５Ｘ間の距離寸法が２０ｍｍに形成され、上記他方の一対の枝部５Ｃ：５Ｄの基準面１０にそれぞれ形成された周辺設置孔部５Ｃ；５Ｄの孔の中心５Ｘ；５Ｘ間の距離寸法が２０ｍｍに形成される。設置孔５の孔の直径寸法は８．１ｍｍに形成される。基準面１０と信号線引出面１１との間の距離、即ち、固定台４の厚さ寸法が５ｍｍに形成される。連結締結用のねじ孔２６が形成されている枝部２０Ａ；２０Ｂは、中央部２０Ｅから突出する突出長さ寸法が１１．５ｍｍ、幅寸法が１２ｍｍに形成される。連結締結用のねじ孔２６が形成されていない枝部２０Ｃ；２０Ｄは、中央部２０Ｅから突出する突出長さ寸法が１０ｍｍ、幅寸法が１２ｍｍに形成される。 Two peripheral installation holes 5A: 5B formed in the reference plane 10 of one pair of branch portions 20A; 20B provided at 180 degrees apart in the circumferential direction of the circle centered on the center line 10X. The center 5X and the center 5X of the hole of the central installation hole 5E are located on the first straight line 5F parallel to the reference plane 10, and are provided 180 degrees apart in the circumferential direction of the circle centering on the center line 10X. The two peripheral installation holes 5C formed on the reference surface 10 of the other pair of branch parts 20C; 20D; the center 5X of the hole of 5D and the center 5X of the hole of the center installation hole 5E are The first straight line 5F and the second straight line 5G are orthogonal to each other and are positioned on the parallel second straight line 5G. And the distance dimension between the center 5X; 5X of the hole of the peripheral installation holes 5A: 5B formed on the reference plane 10 of the pair of one branch 20A; 20B is 20 mm, and the other A pair of branch portions 5C: Peripheral installation hole portions 5C formed on the reference surface 10 of 5D; the center 5X of the holes of 5D; and the distance dimension between 5X are formed to be 20 mm. The diameter of the hole of the installation hole 5 is formed to 8.1 mm. The distance between the reference surface 10 and the signal line drawing surface 11, that is, the thickness dimension of the fixed base 4 is formed to 5 mm. The branch portions 20A and 20B in which the screw holes 26 for connecting and fastening are formed are formed so that the projecting length dimension projecting from the center section 20E is 11.5 mm and the width dimension is 12 mm. The branch portions 20C; 20D in which the screw holes 26 for connecting and fastening are not formed are formed so that the protruding length dimension protruding from the central portion 20E is 10 mm and the width dimension is 12 mm.

図１；図５に示すように、マイクロフォン固定筒体３はマイクロフォン固定部３０を備える。
マイクロフォン固定部３０は、筒の他方の開口部側に設けられた有底の筒状収納孔部により形成される。例えば、円柱状のマイクロフォン２の円柱の直径寸法に対応した内径寸法を有した断面円形の円筒を用い、この円筒の他方の開口端面から、マイクロフォン２の円柱の長さ寸法に対応した距離だけ離れた円筒内の位置に筒状収納孔部の底面を形成する支持板３１を固定することにより、円筒の他方の開口部側に有底の筒状収納孔部を形成できる。尚、支持板３１は、支持板３１の中央部分に信号線３２を通すための信号線通孔３３が形成されたものを用いる。
よって、マイクロフォン固定筒体３の筒の他方の開口より、マイクロフォン２に他端が接続された信号線３２の一端を挿入し、信号線３２の一端を支持板３１の信号線通孔３３に通してマイクロフォン固定筒体３の筒の一方の開口より引き出すとともに、マイクロフォン固定部３０の筒状収納孔部内にマイクロフォン２を嵌め込むことで、マイクロフォンがマイクロフォン固定部３０に固定される。また、信号線３２の一端を信号線引出用孔６に通すとともに、マイクロフォン固定筒体３の筒の一端側を固定台４の設置孔５内に挿入してマイクロフォン固定筒体３の筒の一端面（マイクロフォン固定筒体の一方の開口の端面）を設置孔の底面２５に突き付けた状態で、ねじ孔７に固定ねじ４０を締結することによって、当該固定ねじ４０でマイクロフォン固定筒体３が設置孔５に固定される。信号線３２の一端は、図外の音源方向推定装置に接続される。
尚、設置孔５に固定される筒と、マイクロフォン２を嵌め込むための有底の筒状収納孔部とを別々に用意し、筒の一方の開口端面に有底の筒状収納孔部を固定することによって構成されたマイクロフォン固定筒体であってもよい。 As shown in FIG. 1; FIG. 5, the microphone fixing cylinder 3 includes a microphone fixing portion 30.
The microphone fixing portion 30 is formed by a bottomed cylindrical storage hole provided on the other opening side of the tube. For example, a circular cylinder having an inner diameter corresponding to the diameter of the column of the cylindrical microphone 2 is used, and a distance corresponding to the length of the column of the microphone 2 is separated from the other opening end surface of the cylinder. By fixing the support plate 31 that forms the bottom surface of the cylindrical storage hole at a position inside the cylinder, a bottomed cylindrical storage hole can be formed on the other opening side of the cylinder. In addition, the support plate 31 is used in which a signal line through hole 33 for passing the signal line 32 is formed in the central portion of the support plate 31.
Therefore, one end of the signal line 32 having the other end connected to the microphone 2 is inserted from the other opening of the cylinder of the microphone fixing cylinder 3, and one end of the signal line 32 is passed through the signal line through hole 33 of the support plate 31. The microphone is fixed to the microphone fixing portion 30 by pulling out from one opening of the tube of the microphone fixing cylindrical body 3 and fitting the microphone 2 into the cylindrical housing hole of the microphone fixing portion 30. One end of the signal line 32 is passed through the signal line drawing hole 6, and one end side of the cylinder of the microphone fixing cylinder 3 is inserted into the installation hole 5 of the fixing base 4, and one end of the cylinder of the microphone fixing cylinder 3 is inserted. The microphone fixing cylinder 3 is installed with the fixing screw 40 by fastening the fixing screw 40 to the screw hole 7 with the end face (the end face of one opening of the microphone fixing cylinder) being abutted against the bottom surface 25 of the installation hole. It is fixed to the hole 5. One end of the signal line 32 is connected to a sound source direction estimation device (not shown).
In addition, a cylinder fixed to the installation hole 5 and a bottomed cylindrical storage hole for fitting the microphone 2 are prepared separately, and a bottomed cylindrical storage hole is provided on one opening end surface of the cylinder. A microphone fixed cylinder configured by fixing may be used.

マイクロフォン固定筒体３の筒は、筒の外径が設置孔５の孔の内径よりも僅かに小さいものを用いる。
マイクロフォン固定筒体としては、１つの中央マイクロフォン固定筒体３Ｅと、４つの周辺マイクロフォン固定筒体３Ａ；３Ｂ；３Ｃ；３Ｄとを備える。４つの周辺マイクロフォン固定筒体３Ａ〜３Ｄは、筒の長さが同じ長さのものを用いる。中央マイクロフォン固定筒体３Ｅは、周辺マイクロフォン固定筒体３Ａ〜３Ｄよりも筒の長さを長くする。即ち、２種類のマイクロフォン固定筒体を用いる。
尚、５つのマイクロフォン固定筒体３が固定台４の設置孔５に固定された状態で、中央マイクロフォン２Ｅの中心２Ｘと各周辺マイクロフォン２Ａ〜２Ｄの中心２Ｘとの距離が２０ｍｍになるようにマイクロフォン固定筒体３の長さを選定する。 As the cylinder of the microphone fixing cylinder 3, a cylinder whose outer diameter is slightly smaller than the inner diameter of the hole of the installation hole 5 is used.
The microphone fixed cylinder includes one central microphone fixed cylinder 3E and four peripheral microphone fixed cylinders 3A; 3B; 3C; 3D. As the four peripheral microphone fixed cylinders 3A to 3D, those having the same cylinder length are used. The center microphone fixed cylinder 3E is longer than the peripheral microphone fixed cylinders 3A to 3D. That is, two types of microphone fixed cylinders are used.
In the state where the five microphone fixing cylinders 3 are fixed to the installation holes 5 of the fixing base 4, the microphones are set so that the distance between the center 2X of the central microphone 2E and the centers 2X of the peripheral microphones 2A to 2D is 20 mm. The length of the fixed cylinder 3 is selected.

上述した固定台４によれば、２種類のマイクロフォン固定筒体３を用意して、マイクロフォン固定筒体３にマイクロフォン２を固定して当該マイクロフォン２が固定されたマイクロフォン固定筒体３を設置孔５に固定するだけで、上述した所定の位置関係に５個のマイクロフォン２を正確に固定できるので、音源の方向の推定精度を向上させることができる音データを図外の音源方向推定装置に供給できる音データ採取装置９９を簡単に形成できる。 According to the above-described fixing base 4, two types of microphone fixing cylinders 3 are prepared, the microphone 2 is fixed to the microphone fixing cylinder 3, and the microphone fixing cylinder 3 to which the microphone 2 is fixed is installed in the installation hole 5. Since the five microphones 2 can be accurately fixed to the predetermined positional relationship described above, sound data that can improve the estimation accuracy of the direction of the sound source can be supplied to a sound source direction estimation device (not shown). The sound data collection device 99 can be easily formed.

また、上述した固定台４とマイクロフォン固定筒体３とを備えた固定装置１によれば、比較的小型のマイクロフォンであってもマイクロフォン固定筒体３にマイクロフォン２を固定して当該マイクロフォン２が固定されたマイクロフォン固定筒体３を設置孔５に固定するだけで、上述した所定の位置関係に５個のマイクロフォンを正確に固定できるので、音源の方向の推定精度を向上させることができる音データを図外の音源方向推定装置に供給できる音データ採取装置９９を簡単に形成できる。 Further, according to the fixing device 1 provided with the fixing base 4 and the microphone fixing cylinder 3 described above, the microphone 2 is fixed to the microphone fixing cylinder 3 by fixing the microphone 2 even if the microphone is relatively small. Since the five microphones can be accurately fixed to the predetermined positional relationship just by fixing the microphone fixing cylinder 3 thus made to the installation hole 5, sound data that can improve the accuracy of estimating the direction of the sound source can be obtained. A sound data collection device 99 that can be supplied to a sound source direction estimation device (not shown) can be easily formed.

また、５個のマイクロフォンを用いた音源方向推定方法の原理によれば、マイクロフォン間での音波の到達時間差が１波長以上ずれている場合には、音源の方向を推定できないので、基本的には、高い周波数の音波を出している音源の方向は推定しにくい。
しかしながら、本発明の固定台４や固定装置１によれば、各マイクロフォンの中心間の距離を２０ｍｍとできるので、５個のマイクロフォンで採取した音のデータを用いて音源の方向を推定する図外の音源方向推定装置によって、８０００Ｈｚ以下の音波を発生する音源の方向を推定することが可能となった。 Also, according to the principle of the sound source direction estimation method using five microphones, the direction of the sound source cannot be estimated when the difference in arrival time of sound waves between the microphones is shifted by one wavelength or more. It is difficult to estimate the direction of the sound source emitting high-frequency sound waves.
However, according to the fixing base 4 and the fixing device 1 of the present invention, the distance between the centers of the microphones can be 20 mm, so that the direction of the sound source is estimated using the sound data collected by the five microphones. This makes it possible to estimate the direction of a sound source that generates a sound wave of 8000 Hz or less.

また、マイクロフォン固定筒体３を固定台４に着脱可能なように、固定ねじ４０によってマイクロフォン固定筒体３を設置孔５に固定する構成としたので、マイクロフォン２が故障した場合や信号線３２が断線した場合など、マイクロフォン固定筒体３を固定台４より外せるので、マイクロフォン２や信号線３２の交換作業を容易にできる。 In addition, since the microphone fixing cylinder 3 is fixed to the installation hole 5 by the fixing screw 40 so that the microphone fixing cylinder 3 can be attached to and detached from the fixing base 4, the microphone 2 is broken or the signal line 32 is connected. Since the microphone fixing cylinder 3 can be removed from the fixing base 4 in the case of disconnection, the replacement work of the microphone 2 and the signal line 32 can be facilitated.

次に、図６；７に基いて、音データ採取装置９９にカメラを固定するためのカメラ固定装置５０を説明する。
カメラ固定装置５０は、カメラ固定部６０と、連結部材５２と、カメラ５３とカメラ固定部６０と連結部材５２とを固定する固定ねじ６６と、固定台４と連結部材５２とを固定する固定ねじ６９とを備える。
カメラ固定部は、ベース６１と、ベース６１の両端より立ち上るように設けられた２つのカメラ支持柱６２；６２とを備える。カメラ支持柱６２は、固定ねじ貫通孔６３を備える。
連結部材５２は、Ｔ字状の板材により形成される。連結部材５２は、Ｔ字の下端部に固定ねじ貫通孔６４を備え、Ｔ字の上端部の左右に固定ねじ貫通孔６５；６５を備える。 Next, a camera fixing device 50 for fixing the camera to the sound data collection device 99 will be described with reference to FIGS.
The camera fixing device 50 includes a camera fixing unit 60, a connecting member 52, a fixing screw 66 that fixes the camera 53, the camera fixing unit 60, and the connecting member 52, and a fixing screw that fixes the fixing base 4 and the connecting member 52. 69.
The camera fixing unit includes a base 61 and two camera support columns 62 and 62 provided so as to rise from both ends of the base 61. The camera support column 62 includes a fixing screw through hole 63.
The connecting member 52 is formed of a T-shaped plate material. The connecting member 52 includes a fixing screw through hole 64 at the lower end portion of the T shape, and includes fixing screw through holes 65;

固定ねじ６６を連結部材５２の下端の固定ねじ貫通孔６４とカメラ支持柱６２の固定ねじ貫通孔６３とに通してカメラ５３の側面６７に形成されたねじ孔６８に締結することによって、カメラ５３がカメラ固定部に固定されるとともに、カメラ固定部に連結部材５２が固定される。そして、固定ねじ６９；６９を連結部材５２の固定ねじ貫通孔６５；６５に通して固定台４の連結締結用のねじ孔２６に締結することによって、図６に示すように、音源位置推定の精度を向上できる音データ及び映像データを音源位置推定装置１０１（図９参照）に供給できる音データ及び映像データ採取装置１００を簡単に形成できる。
つまり、固定装置１とカメラ固定装置５０とにより形成される固定装置１５０が構成され、この固定装置１５０により、音源位置推定の精度を向上できる音データ及び映像データを音源位置推定装置１０１に供給できる音データ及び映像データ採取装置１００を簡単に形成できるようになる。
即ち、固定装置１５０により、５個のマイクロフォン２の位置関係を正確に維持でき、かつ、５個のマイクロフォン２と１つのカメラ５３とを一緒に固定できるので、５個のマイクロフォン２で採取した音データ及びカメラ５３で採取した映像データに基いて行われる音源の位置の推定精度を向上できる。 The fixing screw 66 is passed through the fixing screw through hole 64 at the lower end of the connecting member 52 and the fixing screw through hole 63 of the camera support column 62 and fastened to the screw hole 68 formed in the side surface 67 of the camera 53, thereby Is fixed to the camera fixing portion, and the connecting member 52 is fixed to the camera fixing portion. Then, the fixing screw 69; 69 is passed through the fixing screw through hole 65; 65 of the connecting member 52 and fastened to the screw hole 26 for connecting and fastening the fixing base 4 to thereby estimate the sound source position as shown in FIG. The sound data and video data collection device 100 that can supply sound data and video data that can improve accuracy to the sound source position estimation device 101 (see FIG. 9) can be easily formed.
That is, the fixing device 150 formed by the fixing device 1 and the camera fixing device 50 is configured, and the fixing device 150 can supply sound data and video data that can improve the accuracy of sound source position estimation to the sound source position estimating device 101. The sound data and video data collection device 100 can be easily formed.
That is, the positional relationship of the five microphones 2 can be accurately maintained by the fixing device 150, and the five microphones 2 and the one camera 53 can be fixed together. The accuracy of estimating the position of the sound source performed based on the data and video data collected by the camera 53 can be improved.

音データ及び映像データ採取装置１００（あるいは音データ採取装置９９）は、例えば図９に示すように、車１１０の室内１１１に設置され、５個のマイクロフォンにより採取される音、及び、カメラで撮像された映像が音源位置推定装置１０１（あるいは音源方向推定装置）に出力される。音源位置推定装置１０１は、入力した音及び映像に基いて出力手段としての画像表示手段１０２に音源方向推定画像を表示する。従って、車１１０の室内１１１で発生した異音の発生源を推定することができる。 For example, as shown in FIG. 9, the sound data and video data collection device 100 (or the sound data collection device 99) is installed in a room 111 of a car 110 and is picked up by five microphones and picked up by a camera. The obtained video is output to the sound source position estimating apparatus 101 (or sound source direction estimating apparatus). The sound source position estimation apparatus 101 displays a sound source direction estimation image on the image display means 102 as an output means based on the input sound and video. Accordingly, it is possible to estimate the source of abnormal noise generated in the room 111 of the vehicle 110.

音データ及び映像データ採取装置１００や音データ採取装置９９は、車の室内で用いるだけでなく、どのような場所でも用いることが可能である。 The sound data and video data collection device 100 and the sound data collection device 99 can be used not only in a vehicle interior but also in any place.

尚、上記実施形態では図３（ａ）；（ｂ）に示すような有底の設置孔５を示したが、設置孔５は図８（ａ）；（ｂ）に示すように基準面１０と信号線引出面１１とに跨って貫通する貫通孔６ａにより形成された無底の設置孔５であってもよい。この場合の設置孔５を形成する貫通孔６ａの内径はマイクロフォン固定筒体３の外径よりも大きく形成される。そして、マイクロフォン固定筒体３の一端面（下端面）側を基準面１０側から当該設置孔５内に挿入し、例えば、マイクロフォン固定筒体３の一端面と信号線引出面１１とを一致させた状態で固定ねじ４０によりマイクロフォン固定筒体３を設置孔５に固定すればよい。 In the above embodiment, the bottomed installation hole 5 as shown in FIGS. 3A and 3B is shown. However, the installation hole 5 has a reference surface 10 as shown in FIGS. 8A and 8B. And the bottomless installation hole 5 formed by the through hole 6a penetrating over the signal line drawing surface 11. In this case, the inner diameter of the through hole 6 a forming the installation hole 5 is formed larger than the outer diameter of the microphone fixing cylinder 3. Then, the one end face (lower end face) side of the microphone fixing cylinder 3 is inserted into the installation hole 5 from the reference plane 10 side, and, for example, the one end face of the microphone fixing cylinder 3 and the signal line drawing surface 11 are made to coincide. In this state, the microphone fixing cylinder 3 may be fixed to the installation hole 5 with the fixing screw 40.

１固定装置、２マイクロフォン、３マイクロフォン固定筒体、４固定台、
６信号線引出用孔、７ねじ孔、２５底面、３０マイクロフォン固定部、
３２信号線、４０固定ねじ、５３カメラ。 1 fixing device, 2 microphone, 3 microphone fixing cylinder, 4 fixing base,
6 signal line drawing hole, 7 screw hole, 25 bottom surface, 30 microphone fixing part,
32 signal lines, 40 fixing screws, 53 cameras.

Claims

When fixing five microphones used in a sound source direction estimating method for estimating the direction of a sound source using sound data collected by five microphones, the centers of one pair of two microphones are the first. Of the other pair of two microphones are arranged at a predetermined interval on a second straight line orthogonal to the first straight line, and the remaining one microphone center in a predetermined positional relationship as to be disposed at a position apart from the on square plane connecting the centers of the other four microphones, a fixing device for fixing the five microphones,
Including five microphone fixing cylinders for individually fixing the five microphones, and a fixing base for fixing each of the microphone fixing cylinders;
Wherein each microphone fixed cylinder body, for a signal line connected to said microphone to fix said microphone in a state drawn in a cylindrical outside from one opening of the tube via the cylinder of the microphone fixed cylindrical member A microphone fixing part is provided on the other opening side of the cylinder ,
Each of the microphone fixing cylinders for fixing the other four microphones has the same cylinder length, and the microphone fixing cylinder for fixing the remaining one microphone is a cylinder length. Are formed longer than the length of each of the microphone fixing cylinders for fixing the other four microphones,
The fixing base has a five installation hole in which the five microphones fixed cylindrical member is installed individually, and a signal line lead hole passing through in the fixing base surface and the bottom surface of the installation hole, the five The diameter dimension and depth dimension of the hole of the installation hole are formed to the same dimension,
The microphones are respectively fixed to the microphone fixing portions of the microphone fixing cylinders , and one opening side of the microphone fixing cylinder is inserted into the installation hole, and the signal line is connected to the microphone fixing cylinder. The end face of one opening of the microphone fixing cylinder and the bottom surface of the installation hole are in contact with each other in a state of being drawn out of the signal line drawing hole via the hole and the signal line drawing hole. Each microphone fixing cylinder is fixed to each installation hole, whereby five microphones are fixed to the predetermined positional relationship.

2. A screw hole penetrating the surface of the fixing base and the installation hole, and a fixing screw fastened to the screw hole to fix the microphone fixing cylinder to the installation hole. The fixing device according to 1.

Five microphones and shooting at the data and the camera of the collected sound image data and fixing device for fixed and five microphones and cameras used for sound source localization method of estimating the position of a sound source using a Because
The centers of one pair of two microphones are arranged at predetermined intervals on the first straight line, and the centers of the other pair of two microphones are on a second straight line orthogonal to the first straight line. are arranged at a predetermined interval, a predetermined positional relationship such that the center of the remaining one microphone is located away from the on square plane connecting the centers of the other four microphones, the five A fixing device for fixing the microphone and a camera fixing device,
The five fixing device for fixing a microphone is provided with five microphones fixed cylinder body fixed individually the five microphones, respectively, and a fixing base for fixing the respective microphones fixed cylinder body,
Wherein each microphone fixed cylinder body, for a signal line connected to said microphone to fix said microphone in a state drawn in a cylindrical outside from one opening of the tube via the cylinder of the microphone fixed cylindrical member A microphone fixing part is provided on the other opening side of the cylinder ,
Each of the microphone fixing cylinders for fixing the other four microphones has the same cylinder length, and the microphone fixing cylinder for fixing the remaining one microphone is a cylinder length. Are formed longer than the length of each of the microphone fixing cylinders for fixing the other four microphones,
The fixing base has a five installation hole in which the five microphones fixed cylindrical member is installed individually, and a signal line lead hole passing through in the fixing base surface and the bottom surface of the installation hole, the five The diameter dimension and depth dimension of the hole of the installation hole are formed to the same dimension,
The microphones are respectively fixed to the microphone fixing portions of the microphone fixing cylinders , and one opening side of the microphone fixing cylinder is inserted into the installation hole, and the signal line is connected to the microphone fixing cylinder. The end face of one opening of the microphone fixing cylinder and the bottom surface of the installation hole are in contact with each other in a state of being drawn out of the signal line drawing hole via the hole and the signal line drawing hole. By fixing each microphone fixing cylinder to each installation hole, five microphones are fixed in the predetermined positional relationship,
The camera fixing device includes a camera fixing portion to which the camera is fixed, and a connecting member for connecting the fixing stand with the camera fixing unit,
The camera fixing portion includes a base and two camera support columns provided so as to rise from both ends of the base, and each camera support column includes a fixing screw through hole,
The connecting member includes fixing screw through holes at the lower end and the upper end,
The camera is fixed to the camera fixing part by passing the fixing screw through the fixing screw through hole at the lower end of the connecting member and the fixing screw through hole of the camera support column to the screw hole formed in the side surface of the camera. The connecting member is fixed to the camera fixing portion, and a fixing screw is passed through a fixing screw through hole at an upper end portion of the connecting member to be fastened to a screw hole for connecting and fastening the fixing base. by fixing said fixing base and said connecting member is fixed, and wherein said that each microphone fixed cylinder the five microphones fixed to the fixing table through the body and the camera is fixed apparatus.