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Asymmetrical passive group delay beamforming

An asymmetric, delay-level technology, applied in the field of asymmetric passive group delay beamforming, can solve problems such as sound distortion, sound will not form a consistent sound field or sound pattern, and damage the listener's listening experience

Active Publication Date: 2019-01-04
HARMAN INT IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] One problem with speaker systems arranged in an array is that the sound produced by the multiple drivers does not form a consistent sound field or pattern
This inconsistency in the soundstage or sound pattern distorts the sound and impairs the listener's listening experience

Method used

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  • Asymmetrical passive group delay beamforming
  • Asymmetrical passive group delay beamforming
  • Asymmetrical passive group delay beamforming

Examples

Experimental program
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Embodiment Construction

[0038] The present disclosure is provided in the context of loudspeaker systems, and more particularly relates to steering beams to form asymmetric beams. The loudspeaker can provide an asymmetrical beam pattern which can be selected and optionally programmed. The choice of beam pattern may be different from other beam patterns produced by the loudspeaker. The beam coverage pattern can be different for different sets of drivers in the loudspeaker. Individual feed circuits (eg, multistage circuits, delay networks, or transmission lines) can control the beam pattern of each set of drivers in the loudspeaker. The feed circuit may have individual circuit stages for each driver, eg delay stages. For example, delay stages can be different from each other and programmable by selecting circuit elements to be active in individual stages.

[0039] Detailed embodiments are disclosed herein; however, it is to be understood that the disclosed embodiments are merely examples of the inven...

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Abstract

A loudspeaker configured to provide asymmetrical beam coverage. A first group of drivers to outputs a first beam pattern. A second group of drivers, which is different from the first group of drivers,is configured to output a second beam pattern. A transmission line is adapted to output signals to the first driver group and the second driver group to provide an asymmetrical beam pattern. The first driver group outputs a beam pattern different than the second driver group. This can improve acoustic coverage, e.g., sound pressure levels, in the acoustic environment. In an example, the transmission line is separated into two distinct parts that feeds the first driver group and the second driver group respectively.

Description

technical field [0001] Aspects of the present disclosure provide systems and methods for asymmetric passive group delay beamforming, eg, for loudspeaker systems. Background technique [0002] Loudspeaker systems have been implemented as arrays of loudspeakers or drivers stacked and aligned vertically, aligned horizontally, or in two dimensions. The drivers in this configuration can be of the same type, for example tweeters, midrange speakers or wideband speakers. Drivers can also be connected to a crossover network or filter to produce a specific frequency range of sound. [0003] One problem with speaker systems arranged in an array is that the sound produced by the multiple drivers does not form a consistent sound field or pattern. Such inconsistencies in the sound field or sound pattern distort the sound and impair the listener's listening experience. Contents of the invention [0004] A loudspeaker may include structure for generating at least two beam patterns from...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R3/00
CPCH04R1/403H04R2201/401H04R3/12H04S7/30H04R2430/20H04R3/14H04R2201/403H04R2203/12H04R1/323H04R3/04
Inventor D.J.巴顿
Owner HARMAN INT IND INC