Factors influencing effectiveness of Sound Absorbing foams.
| by Duncan Geddes
Airflow, cell size and density, are the main factors influencing the effectiveness of sound absorption in acoustic foams(aka sound deadening foams). Increasing the cell count (ie the number of cells per 25mm of length) of the foam improves the sound absorption at all frequencies. The acoustic absorptivity a specifies the ratio of un-reflected sound in […]