Invention Grant
- Patent Title: Rotationally symmetric speaker array
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Application No.: US16185474Application Date: 2018-11-09
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Publication No.: US10798482B2Publication Date: 2020-10-06
- Inventor: Martin E. Johnson , Gordon R. Dix , Michael B. Howes , Gary P. Geaves , Tom-Davy William Jendrik Saux
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Womble Bond Dickinson (US) LLP
- Main IPC: H04R1/40
- IPC: H04R1/40 ; H04R5/02

Abstract:
A multi-way speaker array is disclosed that includes rings of transducers of different types. The rings of transducers may encircle the cabinet of the speaker array such that the speaker array is rotationally symmetric. The distance between rings of transducers may be based on a logarithmic scale. By separating rings of transducers using logarithmic spacing, denser transducer spacing at short wavelengths is achieved while limiting the number of transducers needed for longer wavelengths by spacing them in larger and larger logarithmic increments. Transducers with overlapping frequency ranges may be used in the speaker array to avoid initial dips or shortfalls in directivity for corresponding beam patterns.
Public/Granted literature
- US20190082254A1 ROTATIONALLY SYMMETRIC SPEAKER ARRAY Public/Granted day:2019-03-14
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