| 摘要 |
<p>The invention relates to a Helmholtz resonator (6) for damping airborne sound in a space, particularly in a conduit (4, 5) transporting airborne sound, comprising a housing (8) surrounding a resonance volume (9), comprising at least one neck (10) for connecting the resonance volume (9) to the space or to the conduit (4, 5) transporting the airborne sound. The Helmholtz resonator (6) obtains at least two resonance frequencies if the housing (8) has at least one wall section delimiting the resonance volume (9), said wall section being formed by a vibratory membrane (11), and if the membrane (11) is tuned such that the resonance frequency thereof corresponds to the first order of the resonance frequency of an identically constructed Helmholtz resonator that does not have such a membrane (11).</p> |
