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Virtual Localization by Blind Persons - July 2012
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Effect of Spatial Location and Presentation Rate on the Reaction to Auditory Displays - July 2012
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Watermark-Aided Pre-Echo Reduction in Low Bit-Rate Audio Coding - June 2012
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Optimum Placement for Small Desktop/PC Loudspeakers
A desktop/PC loudspeaker usually stands on a desk, so the direct sound from the loudspeaker interferes with the reflected sound from the desk. On the desk, a "perfect" loudspeaker with flat anechoic frequency response will not give a flat, but a comb-like resultant frequency response. Here is presented one simple and inexpensive solution to this problem - a small, conventional loudspeaker is placed on a holder. Holder is a horizontally pivoting telescopic arm, that enables easy positioning of the loudspeaker. With one side, the arm is attached on top corner of the PC monitor, and with the other side it is attached to the loudspeaker. The listener extends and rotates the arm in horizontal plane to such position that no reflection from the desk or from the PC monitor reaches the listener, thus preserving the presumably flat anechoic frequency response of the loudspeaker.
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