主题：Optimum Placement for Small Desktop/PC Loudspeakers

这是在看AES的会议摘要时看到的。对于电脑音箱的设计，他专门考虑了普通的电脑音箱都会有一次桌面的反射。感觉挺有意思。。是不是有点像界面话筒的原理？

—Vladimir Filevski, Audio Expert DOO - Skopje, Macedonia
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. The holder is a horizontal pivoting telescopic arm that enables easy positioning of the loudspeaker. With one side, the arm is attached on the top corner of the PC monitor, and the other side is attached to the loudspeaker. The listener extends and rotates the arm in horizontal plane to such a 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.