SoundHack has a binaural filter, which processes a monaural sound file so that the resulting file puts the signal at a simulated position around the head, emulating stereo. The difference is easiest to perceive with stereo headphones.
<HTML><ol></HTML> <HTML><li></HTML>Choose Binaural Filter from the Hack menu.<HTML></li></HTML> <HTML><li></HTML><HTML><p></HTML>In the dialog that appears, click the position you want the sound to originate from or enter an angle.<HTML></p></HTML> <HTML><p></HTML><HTML></p></HTML> <HTML><p></HTML>Figure 1: Binaural Position Filter dialog.<HTML></p></HTML> <HTML><p></HTML>The head in the dialog is looking upward, so the currently selected position in the figure below would, for example, play the sound 60 degrees left of front.<HTML></p></HTML><HTML></li></HTML><HTML></ol></HTML>