One-piece active acoustic loudspeaker enclosure configurable to be used alone or as a pair, with reinforcement of the stero image

A speaker box and integrated technology, applied in stereo system, spatial/structural arrangement of speakers, acoustic channel transducer, etc., can solve the problem of failure of processing operation, unbalanced acoustic environment, and easy placement in the room side instead of the middle of the wall etc.

Inactive Publication Date: 2014-03-26
PARROT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Finally, a single all-in-one loudspeaker enclosure tends to be placed on one side of the room rather than in the middle of the wall, which can make the acoustic environment unbalanced, defeating the effect of the processing operations used to render an even stereo image

Method used

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  • One-piece active acoustic loudspeaker enclosure configurable to be used alone or as a pair, with reinforcement of the stero image
  • One-piece active acoustic loudspeaker enclosure configurable to be used alone or as a pair, with reinforcement of the stero image
  • One-piece active acoustic loudspeaker enclosure configurable to be used alone or as a pair, with reinforcement of the stero image

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Experimental program
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Embodiment Construction

[0038] General Configuration of the Speaker Box

[0039] figure 1 is a general view of a speaker enclosure according to the present invention showing the acoustic configuration of various speakers used.

[0040] The loudspeaker enclosure 10 externally has the form of a cylindrical trumpet in its lower part, with a base 12 supporting a raised portion 14 of flattened shape with a section of approximately 3x12 cm.

[0041] The flattened raised section 14 has a first loudspeaker 16 whose main direction of propagation D1 is horizontal and perpendicular to the largest dimension of the rectangular section of the raised section 14 . This loudspeaker 16 will hereinafter be referred to as the "center loudspeaker", which corresponds to the "center channel" of the multi-channel loudspeaker enclosure.

[0042] The speaker enclosure 10 also includes a left speaker 18L and a right speaker 18R on the edge of the raised portion 14, ie on the narrowest side. The respective main directions of...

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Abstract

The loudspeaker enclosure (10) comprises a central channel (16) turned toward the listener, and left and right side channels (18L, 18R) oriented perpendicular to each other. The signal to be reproduced is separated into: i) a mono component correlated between the left and right signals; ii) left and right surround components decorrelated between the left and right signals; iii) a left component decorrelated between the mono component ant the left signal; and iv) a right component decorrelated between the mono component ant the right signal. The central channel and the side channels are piloted by combinations of these components according to a distribution that is a function of the mode of use of the loudspeaker enclosure, alone in front of a listener and as a pair in association with another similar loudspeaker enclosure, the two loudspeaker enclosures being arranged on the left and on the right of the listener. The directivity diagram is thus modified to create therein directions of cancellation of the stereo image without deformation of the signal rendered.

Description

technical field [0001] The present invention relates to the reproduction of audio signals by high-fidelity equipment, rendering and enhancing stereophonic effects in front of the audience. Background technique [0002] Conventionally, the ideal configuration for stereo listening consists in placing the two speaker enclosures away from each other, forming an isosceles triangle with the listener. In this configuration, a stereo image is created between the two speaker enclosures, ie the various sources (eg different instruments) appear distributed along the axis connecting the two speaker enclosures. [0003] Furthermore, it is required that the acoustic environment of the loudspeaker enclosure be empty or absorbing in order to avoid parasitic reflections on the walls of the room which then form new sources. In any case, it may be required that the environment be symmetrical, which would at least not allow the stereo image to be unbalanced. [0004] The first problem lies in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R5/02
CPCH04S1/002H04R5/02H04R1/323H04R2205/022G10L19/008
Inventor J·德米恩克B·波琼T·德罗梅
Owner PARROT
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