Claims
- 1. A microphone device, comprising:
- three directional microphone elements disposed in a substantially horizontal linear array on sound absorbing mounting means forming a first vertical plane, whereby adjacent ones of the three microphone elements are separated by a single predetermined distance, each of the three microphone elements is directed to a sound source, and three sound receiving faces, each corresponding to one of the three microphone elements, form a plane parallel to the first vertical plane formed by the sound absorbing mounting means, said plane parallel to the first vertical plane being between the first vertical plane and the sound source; and
- adding means for adding output signals from respective ones of the three microphone elements;
- wherein each of the three microphone elements includes a vibrating plate; and
- wherein the first vertical plane is in parallel to a second vertical plane formed by the vibrating plates.
- 2. The microphone device as set forth in claim 1, wherein each of the three microphone elements is a uni-directional microphone element.
- 3. A microphone device, comprising:
- three microphone elements disposed on sound absorbing mounting means whereby adjacent ones of the three microphone elements are separated by a single predetermined distance, each of the three microphone elements is mounted in a horizontal linear array configuration substantially perpendicular to a main axis of directivity of the three microphone elements and three sound receiving faces, each corresponding to one of the three microphone elements, form a vertical plane; and
- adding means for adding output signals from respective ones of the three microphone elements;
- wherein the three microphone elements are comprised of unidirectional microphone elements and are disposed on said sound absorbing mounting means such that each of three sound collection surfaces corresponding to one of the three microphone elements is directed in the same direction with respect to a sound source and such that each of the three microphone elements is between said sound absorbing mounting means and said sound source.
- 4. A microphone device, comprising:
- a microphone element; and
- three sound guide paths substantially equal to each other in length and adapted for guiding external sound to the microphone element, wherein respective first and second open ends of each of the three sound guide paths are arranged so that each one of three distances from a single sound source to the microphone element through one of the three sound guide paths is caused to be equal to the other two distances, the first open ends of each of the three sound guide paths form a horizontal linear array, and the second open ends of the three sound guide paths are adjacent the microphone element.
- 5. The microphone device as set forth in claim 4, wherein the microphone element is a non-directional microphone element.
- 6. The microphone device as set forth in claim 4, wherein the microphone element is a uni-directional microphone element.
- 7. The microphone device as set forth in claim 4, further comprising sound absorbing means provided adjacent the three first open ends of the three sound guide paths.
Priority Claims (1)
Number |
Date |
Country |
Kind |
7-023123 |
Feb 1995 |
JPX |
|
Parent Case Info
This is a continuation of application Ser. No. 08/704,756 filed Sep. 25, 1996, now abandoned.
US Referenced Citations (15)
Foreign Referenced Citations (1)
Number |
Date |
Country |
2066620 |
Jul 1981 |
GBX |
Continuations (1)
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Number |
Date |
Country |
Parent |
704756 |
Sep 1996 |
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