Visible Speech Translators with External Phosphors

This paper describes some experimental apparatus built to give a passing display of visible speech patterns. These patterns show the analysis of speech on an intensity-frequency-time basis and move past the reader like a printed line. The apparatus has been called a translator as it converts speech intended for aural perception into a form suitable for visual perception. The phosphor employed is not in a cathode-ray tube but in the open on a belt or drum.