Patent ID: 8776713

Claim:
A whistle comprising: an air supply opening through which a breath is blown into; a first resonance chamber, a second resonance chamber and a third resonance chamber into which the breath blown into through the air supply opening flows through a common air supply passage, as well as a first air supply passage, a second air supply passage and a third air supply passage that branch from the common air supply passage; and a first sound emitting opening, a second sound emitting opening and a third sound emitting opening that emit sounds generated in the first resonance chamber, the second resonance chamber and the third resonance chamber, respectively; wherein a diameter of the first resonance chamber, a diameter of the second resonance chamber, and a diameter the third resonance chamber are identical, and a length of the first resonance chamber, a length of the second resonance chamber and a length of the third resonance chamber are different from one another, the first resonance chamber and the second resonance chamber are arranged side by side in a planar view, the third resonance chamber is disposed between the first resonance chamber and the second resonance chamber, as well as upside the first resonance chamber and the second resonance chamber, and the first resonance chamber, the second resonance chamber and the third resonance chamber are arranged in such a way that respective central axes in a longitudinal direction of the first resonance chamber, the second resonance chamber and the third resonance chamber form an approximately upright triangle, the third air supply passage is bent upward and extended to the third resonance chamber, and the outlet of the third air supply passage is disposed ahead of the outlet of the first air supply passage and the outlet of the second air supply passage, and the first sound emitting opening, the second sound emitting opening and the third sound emitting opening are open upward.