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    • 11. 发明申请
    • LOW FREQUENCY HORN
    • 低频喇叭
    • US20040003961A1
    • 2004-01-08
    • US10190773
    • 2002-07-05
    • Mackie Designs Inc.
    • David W. Gunness
    • G10K011/00
    • H04R1/30
    • A low frequency horn apparatus including a throat (20), barrel (30) and mouth (40). The barrel (30) includes a series of chambers (50 and 60) wherein the cross-sectional area of each chamber in the series increases linearly from one end of the chamber to the other. The rate of linear increase is greatest in the first chamber 50 in the series. The chambers are in communication with one another so that sound waves entering the throat aperture (20) of the first chamber (50) in the series travel though each chamber in the series and exit the series of chambers through the mouth (40) of the last chamber (60) in the series. Sounds waves may be created by an electroacoustic transducer (70) that includes a cone. Further, the cross-sectional area of the mouth (40) may be less than the cross-sectional area of the cone (78).
    • 包括喉部(20),筒(30)和嘴(40)的低频喇叭装置。 桶(30)包括一系列室(50和60),其中串联的每个室的横截面积从室的一端线性增加到另一端。 在该系列的第一室50中线性增加率最大。 腔室彼此连通,使得进入串联的第一腔室(50)的喉孔(20)的声波通过串联的每个腔室行进,并通过口腔(40)离开该系列腔室 最后一个房间(60)系列。 声波可以由包括锥体的电声换能器(70)产生。 此外,口(40)的横截面积可以小于锥体(78)的横截面面积。