Invention Grant
US08553898B2 Method and system for reducing acoustical reverberations in an at least partially enclosed space
有权
用于减少至少部分封闭空间中的声音混响的方法和系统
- Patent Title: Method and system for reducing acoustical reverberations in an at least partially enclosed space
- Patent Title (中): 用于减少至少部分封闭空间中的声音混响的方法和系统
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Application No.: US12627608Application Date: 2009-11-30
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Publication No.: US08553898B2Publication Date: 2013-10-08
- Inventor: Emmet Raftery
- Applicant: Emmet Raftery
- Agency: Millman IP Inc.
- Main IPC: H04B3/20
- IPC: H04B3/20 ; A61F11/06 ; G10K11/16 ; H03B29/00

Abstract:
A method of increasing the intelligibility of an audio broadcast in an at least partially enclosed space from at least one amplified audio source. An input microphone receives an incident audio wavefront at a first position in the at least partially enclosed space. An active noise control system is employed to generate a cancelling audio wavefront having a magnitude substantially equal to the magnitude of incident audio wavefront and a phase substantially opposite to the phase of the incident audio wavefront. The cancelling audio wavefront is broadcast at a second position in the at least partially enclosed space adjacent to a reflective surface of the at least partially enclosed space so as to attenuate the incident audio wavefront substantially at or near the reflective surface in order to reduce reverberations of the incident audio wavefront. In this manner, reverberations which could reduce the intelligibility of the audio broadcast to an audience is reduced.
Public/Granted literature
- US20110129096A1 METHOD AND SYSTEM FOR REDUCING ACOUSTICAL REVERBERATIONS IN AN AT LEAST PARTIALLY ENCLOSED SPACE Public/Granted day:2011-06-02
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