| 摘要 |
<p>A harmonica (2) has a body (4) with holes (16) in a front edge thereof through which air can be blown or drawn to vibrates reeds (8, 9) mounted over and under box-like cavities (5) in the body and produce sound; covers (15, 15) create chambers from which the sound exits at the rear (arrows A). At least one microphone (20) is mounted in the rear of the body, facing away from the reeds (8, 9) and in the direction in which the sound travels to amplify the sound.</p> |
