AES E-Library

Room Mode Bass Absorption Through Combined Diaphragmatic & Helmholtz Resonance Techniques: 'The Springzorber'

This report documents the research and prototyping of a new form of acoustical bass absorber. The bass absorber reduces peak and dip frequency response errors caused by interference from naturally occurring standing waves in rooms. The design uses two forms of simple harmonic resonance: pistonic diaphragm resonance and Helmholtz cavity resonance. The pistonic diaphragm resonance is achieved by attaching a rigid planar membrane to metal springs. The Helmholtz cavity resonance is achieved by constructing an enclosed chamber attached to an open tube. Coupling these two dissipation devices led to several-fold improvement in total room mode attenuation.

Authors: Reiley, Evan; Grimani, Anthony
Affiliation: Performance Media Industries Ltd., Fairfax, CA
AES Convention:114 (March 2003) Paper Number:5760 Import into BibTeX
Subject:Room Acoustics and Sound Reinforcement

Click to purchase paper or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!

This paper costs $20 for non-members, $5 for AES members and is free for E-Library subscribers.

Learn more about the AES E-Library

E-Library Location: (CD aes20)   /pp2003/pp0303/00105.pdf

Start a discussion about this paper!