https://www.stereophile.com/content/take-me-your-ledr#5fxQ0JFr2ZIIbIXb.97
1.83米应该是从这个6英尺来的,6英尺=1.8288米
The first path, Up, will amaze your friends and quiet your enemies. It's hard to believe that a sound can appear to travel from a loudspeaker up to 6' above the speaker! This path is generated first in the left speaker, then in the right. The sound should begin at about eye level and then travel as straight as possible up in the air about 6'. You should grade the system on how vertically straight the path is, how high the image goes, if it is continuous (unbroken), whether it approaches or recedes from the listener (it should not), and if the left and right paths are symmetrical.
|