| 摘要 |
<p>A sound insulator, particularly for installation beneath a floor, comprises a sound-absorbent foam 1 within a flexible membrane 2. Part of the external surface is curved around a longitudinal axis. Advantageously, the membrane 2 comprises a partial cylinder. Preferably, the sound insulator comprises interengageable, hemi-cylindrical modules which may be secured to the floor joists or other frames.</p> |
