When he replayed the tapes, he heard faint but intelligible voices in the background, even though there was no-one else in the vicinity when the recordings were made. By repeating the procedure, J rgenson found that the voice recordings could be reliably replicated. Taking their inspiration from J rgenson's work, these phenomena were subsequently investigated by the German parapsychologist Hans Bender and by the Latvian psychologist Konstantin Raudive. Several methods have been used to record Raudive voices. Recording with no microphone connected.
Recordings typically last only for a few minutes.
This is because intense concentration is required in order to hear the voices on the tape, which usually has to be replayed several times in order to decipher the speech. Use of headphones is recommended. If you have a sound card and a decent browser, you can hear Raudive Voices now by clicking on the buttons below. These are short snippets of a longer recording that I made using the simple procedure described in the next section. To hear the voices at their best you should play them at maximum volume through headphones.