Sound collector
First Claim
1. A sound collector comprising:
- a sound collection hood having an opening at the front end and a sound reflective inner wall shaped like a rotating surface having a focus behind the opening at least provided on the opening side, thus forming an inner space;
a microphone placed inside the sound collection hood with at least a sound receiving face oriented forward for receiving a sound wave entering the sound collection hood; and
an acoustical absorbent body, independent of the sound reflective inner wall, formed in front of the sound receiving face so as to form an incident path for sound to enter the sound receiving face, shaped so as to surround the incident path, and wherein an angle of the incident path is in the range 150°
±
15°
.
1 Assignment
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Accused Products
Abstract
The present invention provides a sound collector preferably applicable to an acoustic analysis with a high degree of accuracy and includes a sound collection hood having an opening at the front end and a sound reflective inner wall shaped like a rotating surface having a focus behind the opening at least provided on the opening side, thus forming an inner space, a microphone placed inside the sound collection hood with at least a sound receiving face oriented forward for receiving a sound wave entering the sound collection hood and an acoustical absorbent body formed in front of the sound receiving face so as to form an incident path for sound to enter the sound receiving face and in a shape surrounding the incident path.
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Citations
12 Claims
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1. A sound collector comprising:
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a sound collection hood having an opening at the front end and a sound reflective inner wall shaped like a rotating surface having a focus behind the opening at least provided on the opening side, thus forming an inner space; a microphone placed inside the sound collection hood with at least a sound receiving face oriented forward for receiving a sound wave entering the sound collection hood; and an acoustical absorbent body, independent of the sound reflective inner wall, formed in front of the sound receiving face so as to form an incident path for sound to enter the sound receiving face, shaped so as to surround the incident path, and wherein an angle of the incident path is in the range 150°
±
15°
. - View Dependent Claims (2, 3, 4, 5, 7, 11, 12)
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6. A sound collector comprising:
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a sound collection hood having an opening at the front end and a sound reflective inner wall shaped like a rotating surface having a focus behind the opening at least provided on the opening side, thus forming an inner space; a microphone placed inside the sound collection hood with at least a sound receiving face oriented forward for receiving a sound wave entering the sound collection hood; an acoustical absorbent member, independent of the sound reflective inner wall, disposed inside the sound collection hood so as to surround the sound receiving face of the microphone, forming an incident path for sound to enter the sound receiving face, wherein an angle of the incident path is in the range 150°
±
15°
; anda partition wall which is disposed ahead of the acoustical absorbent member and separates the inner space including the sound receiving face from the outside of the sound collection hood. - View Dependent Claims (8, 9)
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10. A sound collector comprising:
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a sound collection hood having an opening at the front end and a sound reflective inner wall shaped like a rotating surface having a focus behind the opening at least provided on the opening side, thus forming an inner space; a microphone placed inside the sound collection hood with at least a sound receiving face oriented forward; and an acoustical absorbent body, independent of the sound reflective inner wall, formed in front of the sound receiving face so as to form an incident path for sound to enter the sound receiving face, and wherein an angle of the incident path is in the range 150°
±
15°
.
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Specification