US 8,553,914 B2Granted

Apparatus for reproduction of stereo sound

AssigneeAirsound LLP

InventorEdward Stuart Fletcher

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Abstract

Apparatus for reproducing stereo sound having a housing (1, 25) defining an at least partially enclosed space. A first transducer (7) or pair of transducers (28, 29) is provided and arranged to reproduce one, both or the sum of two audio signals. A pair of transducers (10, 32) is also provided and arranged to reproduce a signal comprising the difference of the two audio signals. As the transducers communicate with the at least partially enclosed space, and the transducers arranged to reproduce the difference between the two audio signals are each arranged to direct their output primarily in a direction generally at right angles to the direction in which the first transducer or pair of transducers primarily direct their output. The apparatus may be arranged to be placed on or adjacent a generally flat surface, and the transducers arranged to reproduce the difference of the two audio signals may be arranged to direct their output towards the flat surface.

Claims24

Dependent claims

Apparatus for reproduction of stereo sound comprising:

a housing arranged to sit on a generally flat surface;
a first transducer arranged to reproduce one, or the sum, of two audio signals;
two transducers each arranged to reproduce a signal comprising the difference of the two audio signals;
and
wherein the first transducer and the two transducers are all enclosed in the housing;
wherein the transducers arranged to reproduce the signal comprising the difference of the two audio signals are arranged to direct their outputs primarily along different axes and wherein each of said axes lies in a direction generally at right angles to the direction in which the first transducer is arranged to primarily direct its output;
and
wherein the two transducers arranged to reproduce the signal comprising the difference of the two audio signals are arranged relative to the housing such that when the housing is placed on or adjacent a generally flat surface both transducers are oriented to direct their output primarily in a direction extending towards the plane of the surface.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 12/440,017Filed 21 Aug 2007
Priority: GB 0616910.625 Aug 2006
Published: US 2010/0061575 A111 Mar 2010
Granted: 8 Oct 2013
Term ends: Not estimatedThe source records don’t support an estimate.

Classification6 codes

H04R 5/02
Stereophonic arrangements: spatial or constructional arrangements of loudspeakers
H04S 1/002
Two-channel systems: non-adaptive circuits, e.g. manually adjustable or static, for enhancing the sound image or the spatial distribution
H04R 1/2819
Of the bass reflex type: for loudspeaker transducers
H04R 2499/15
General applications: transducers incorporated in visual displaying devices, e.g. televisions, computer displays, laptops