Audio system for a computer display
First Claim
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1. An audio system for a computer visual display unit having a screen, the system comprising:
- a plurality of loudspeakers distributed around the screen of the visual display unit;
audio circuitry for driving the loudspeakers with a variably distributed sound source signal related to screen coordinates of an image displayed on the screen; and
a computer means coupled to the video display unit and the audio circuitry for processing screen coordinates of the image to provide a control input to the audio circuitry whereby sound is generated which appears to emanate from a position having a predetermined relationship with the screen coordinates of the image.
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Abstract
An audio system for a computer visual display unit (VDU), providing four loudspeakers 1 to 4 at the corners of the VDU screen. Sound is distributed to the loudspeakers under computer program control, to simulate the emission of sound from an image on the VDU screen.
47 Citations
12 Claims
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1. An audio system for a computer visual display unit having a screen, the system comprising:
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a plurality of loudspeakers distributed around the screen of the visual display unit; audio circuitry for driving the loudspeakers with a variably distributed sound source signal related to screen coordinates of an image displayed on the screen; and a computer means coupled to the video display unit and the audio circuitry for processing screen coordinates of the image to provide a control input to the audio circuitry whereby sound is generated which appears to emanate from a position having a predetermined relationship with the screen coordinates of the image. - View Dependent Claims (2, 3, 4, 5)
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6. A method of operating a computer visual display unit having a screen and a plurality of loudspeakers distributed around the screen comprising the following steps:
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displaying an image on the screen having known screen coordinates; driving the loudspeakers to generate sound, said sound being related to said image; and distributing the sound among the loudspeakers so that the sound emanates from the loudspeakers having a predetermined relationship with the coordinates of the image displayed on the screen such that the sound emanating from the loudspeakers corresponds to coordinates further from the center of the screen than the coordinates of the image.
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7. A method of operating a computer visual display unit having a screen, a plurality of loudspeakers distributed around the screen and audio circuitry for driving the plurality of loudspeakers, comprising the following steps:
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displaying an image on the screen having known screen coordinates; driving the loudspeakers to generate sound; and processing the screen coordinates of the image to provide a control input to the audio circuitry whereby sound is generated which appears to emanate from a position having a predetermined relationship with the screen coordinates of the image. - View Dependent Claims (8)
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9. An audio system for a computer visual display unit having a screen, at least one image being displayed on the screen at known screen coordinates, the system comprising:
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a plurality of loudspeakers distributed around the screen of the video display unit; audio circuitry for driving the loudspeakers with a variably distributed sound source signal related to the screen coordinates of each image displayed on the screen; and a computer means coupled to the screen and the audio circuitry for processing the screen coordinates of each image displayed on the screen to provide a control input to the audio circuitry so that sound originating with a particular image appears to emanate from a position related to the screen coordinates of the particular image. - View Dependent Claims (10, 11, 12)
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Specification