Speaker attenuation system, method and apparatus

Details Speaker attenuation system, method and apparatus Speaker attenuation system, method and apparatus

2011-03-22

2011-03-22

Kuntz, Curtis (Department: 2614)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Having acoustic wave modifying structure

C381S150000, C381S347000, C381S354000

Reexamination Certificate

active

07912238

ABSTRACT:
A speaker attenuation system includes an attenuating member comprised of suitable material and having a size and a shape capable of attenuating a speaker when positioned in a central beam region of the speaker. A positioning mechanism is capable of positioning the attenuating member predominantly in the central beam region of the speaker in such a manner that it is between the speaker and an audience in a performance setting. The suitable material, such as open cell foam (i.e., acoustic foam), preferably has a property that it is capable, at one or more thicknesses, of reducing amplitudes of a majority of frequencies between one-thousand and eight-thousand Hertz by at least six decibels without reducing amplitudes of any frequencies in that range by more than eighteen decibels. Accordingly, the “beaminess” of the speaker can be reduced without creating a “hole in the sound.”

REFERENCES:
patent: 3833085 (1974-09-01), Thomasen
patent: 6826287 (2004-11-01), Myers
WeberVST Products, www.webervst.com/public.htm, Apr. 30, 2004, per Internet Archive Wayback Machine.
Beam BlockerBeam-tm, www.webervst.com/blocker.html, Jul. 21, 2004, per Intenet Archive Wayback Machine.
Weber Beam Blockers, www.guitarplayer.com/story.asp?sectioncode=6&storycode=11734, Dec. 2005.
SoundEflect Products, Flapjack Guitar Amp Speaker Frequency Blocker, www.soundeflect.com/productinfo.htm, 2006.

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