Patent ID: 6434240
Filing Date: 2002-08-13
Classification: H04R

Abstract:
An isolation cabinet for producing and recording sound in isolation of an external environment, the isolation cabinet comprising:a speaker cabinet acoustically sealed from the external environment so that emanation of sound from the speaker cabinet is prevented; an input for receiving an external electrical signal; first and second speakers enclosed within the speaker cabinet, wherein each speaker includes a surface that is electromagnetically responsive to the electrical signal to produce sound by moving air within the cabinet, wherein the speaker cabinet does not provide a substantial unsealed path between a speaker surface and the exterior of the speaker cabinet; a microphone positioned inside the speaker cabinet for converting the motion of air inside the speaker cabinet into an output signal; and a coupling between the input and the first and second speakers so that the air in at least one region of the speaker cabinet is moved in a first direction in response to the first speaker and is moved in a second direction, different from the first direction, in response to the second speaker to produce sound within the speaker cabinet in response to the electrical signal.