Sound reproduction system having sonic image localization networks
First Claim
1. A sound reproducing system comprising a pair of spaced apart first and second loudspeakers, at least one sonic localization network for deriving a pair of mutually related localizing audio signals from an input audio signal and applying said localizing signals to said loudspeakers respectively to develop a sound that is perceived by a listener as emanating from a phantom source on one side of said first loudspeaker which is remote from said second loudspeaker, a plurality of potentiometers for separating said input audio signal into a set of at least three audio signals and adjusting the levels of the separated signals relative to each other, two of said separated signals being supplied to said first and second loudspeakers, respectively, said localization network being responsive to the remainder of said separated audio signals to provide localizing signals to said first and second loudspeakers, respectively, so that said phantom sound source is located within an area external to an area which lies intermediate said loudspeakers, whereby the adjustment of one or more of said potentiomenters causes a sonic image produced by said phantom source to appear to move continuously with an area including said loudspeakers and said phantom sound source.
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Abstract
In a sound reproduction system having two loudspeakers located in front of a listener, an input audio signal is divided into a plurality of channel signals which are respectively applied through voltage adjusting devices to the front loudspeakers and also to additional speakers or localization networks to generate additional real or phantom sound sources at ±90 degrees to the normal to the listener. The additional sound sources and the front loudspeakers are located symmetrically with respect to the listener. By manual operation of the adjusting devices a sonic image can be localized at any point in the front half plane. Continual operation of the adjusting devices causes the localized sonic image to be moved continuously within the localizable area.
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Citations
11 Claims
- 1. A sound reproducing system comprising a pair of spaced apart first and second loudspeakers, at least one sonic localization network for deriving a pair of mutually related localizing audio signals from an input audio signal and applying said localizing signals to said loudspeakers respectively to develop a sound that is perceived by a listener as emanating from a phantom source on one side of said first loudspeaker which is remote from said second loudspeaker, a plurality of potentiometers for separating said input audio signal into a set of at least three audio signals and adjusting the levels of the separated signals relative to each other, two of said separated signals being supplied to said first and second loudspeakers, respectively, said localization network being responsive to the remainder of said separated audio signals to provide localizing signals to said first and second loudspeakers, respectively, so that said phantom sound source is located within an area external to an area which lies intermediate said loudspeakers, whereby the adjustment of one or more of said potentiomenters causes a sonic image produced by said phantom source to appear to move continuously with an area including said loudspeakers and said phantom sound source.
Specification