In 1952, sound engineer Emory Cook developed a stereophonic disk that used two separate grooves and playback needles; the following year he had a catalog of about 25 disks available for audiophiles.
Sound engineer Emory Cook developed a stereophonic disk. This was in 1952. This stereophonic disk used two separate grooves and playback needles. The following year he had a catalog of about 25 disks available for audiophiles.