Latvian born psychologist and parapsychologist Konstantin Raudive, became interested in Electronic Voice Phenomena soon after Friedrich Jürgenson released his first book in 1964. Jointly, Raudive conducted experiments with Jürgenson between 1964-1969 but found that through differences in opinion and procedure his research would lead him in his own direction.

Raudive had an extensive collection of audio captures numbering over 100,000 and worked with many scientist throughout his years of research including Hans Bender of the University of Freiburg and Friedebert Karger of the Max Planck Institute in Munich Germany.

Much like Jürgenson, Raudive discovered many of the voices were in the form of "polygot", but with mastering 13 different languages the deciphering of the cryptic messages didn't handicap his research.

In 1971, the English translation of his book "Breakthrough: An Amazing Experiment in Electronic Communication with the Dead" was published in England after inviting Raudive to participate in a controlled experiment validating the phenenoma at Pye Records Limited by the publishers.

With special equipment installed blocking out radio and television signals, essentially a Faraday cage, Raudive was only allowed to speak into a microphone for a duration of 18 minutes while being monitored by a team of scientists. No voices were heard during the recording but once the recording was played back, much to the monitoring teams amazement, over two hundred voices were heard. Observers acknowledged the validity of E.V.P. since some voices addressed Raudive by his nickname, "Kosti" or "Koste", and even his deceased sister said her name three times "Tekle". The phenomena was referred to after as"Raudive Voices" by many who followed his research and methodology.

Raudive used primarily three different methods in capturing the voices from beyond. A passive method where the recorder was left unattended includingthe removal of the microphone, the recording of whilte noise produced from a radio tuned between stations and the use of a crystal diode between the recorder and the reel to reel.

In his later years Raudive spent most of his time in Germany writing two more books before passing away in 1974 at the age of sixty-five. Few remember him now as we have past into the 21st century but his lack of critical judgements and interpretations of the soft whispers he captured on his recorder unmistakenably earn him as a pioneer in the research of Electronic Voice Phenomena.