ApplicationNo. 857351 filed on 05/16/1997
US Classes:381/160, Reflecting element381/182, Plural or compound reproducers381/186Plural diaphragms
ExaminersPrimary: Kuntz, Curtis
Assistant: Harvey, Dionne
Attorney, Agent or Firm
Foreign Patent References
International ClassH04R 025/00
AbstractA sound focusing speaker system includes a sound focusing lens having an upper parabolic portion and a coaxial lower parabolic portion, each defined by different parabolic equations. A conical skirt is also provided adjacent the lower parabolic portion, and a lower lip is provided around the conical skirt. A speaker driver system is provided within the sound focusing lens. The speaker system includes a high frequency driver, a low frequency driver, and a sound dispersion lens into which the low frequency driver fires. The high frequency driver is vertically aligned with the focus of the upper parabolic portion, and a central portion of the sound dispersion lens is vertically aligned with the focus of the lower parabolic portion. The conical skirt contains reflected waves. The coaxial dual parabolic sound focusing speaker system is optimized to accurately reproduce a broad frequency spectrum of sound and to reflect the sound into a substantially vertical beam. As a result, optimal sound reproduction is provided and the sound is confined to a relatively controlled vertical beam. A second embodiment is provided in which the sound focusing lens is provided with an internal baffle to partially separate two halves of the sound focusing lens. The sound focusing lens may be used with stereo speaker drivers to provide two beams of sound and providing stereo sound imaging.