| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a whistle capable of generating clear and comfortable beat sounds which comprises three resonance chambers, with which three resonance sound waves are being clearly generated without being canceled by each other and emitted sounds are not being interrupted by hand or lower jaw of a blower. <P>SOLUTION: An inventive whistle comprises: an air supply port into which expired air is blown; a first resonance chamber, a second resonance chamber and a third resonance chamber into which the expired air blown from the air supply port flows via a common air supply path and a first air supply path, a second air supply path, and a third air supply path respectively branched from the common air supply path; and a first sound emitting port, a second sound emitting port, and a third sound emitting port which emit sounds generated in the first resonance chamber, the second resonance chamber and the third resonance chamber, respectively. The first resonance chamber and the second resonance chamber are arranged side by side when viewed in a plane, and the third resonance chamber is arranged between and above the first resonance chamber and the second resonance chamber. Also, the first sound emitting port, the second sound emitting port and the third sound emitting port are opened upward. <P>COPYRIGHT: (C)2012,JPO&INPIT |
