tonoscope

English

Etymology

tono- +‎ -scope, coined by Dr. Hans Jenny, who invented the first such device and published research that was based on it.

Noun

tonoscope (plural tonoscopes)

1. Any of various devices that make sound visible by displaying vibrations.
   • 2010, Naomi Ozaniec, Beat Stress With Meditation: Teach Yourself, →ISBN:

     When the tonoscope was used with patients suffering from speech difficulties, the difference between a pure sound and a skewed sound was clearly evident.

   • 2014, Brenton J. Malin, Feeling Mediated: A History of Media Technology and Emotion in America, →ISBN:

     Seashore saw the emotions of music as buried in the subsensory rise and fall of the sound wave; only tools such as the tonoscope could capture music's true beauty.

   • 2016, J. Douglas Kenyon, Unseen Forces: A Guide for the Truly Attentive, →ISBN:

     Although a deaf child might not be able to hear the difference between a properly pronounced “oh” and a guttural, poorly articulated “uhh,” using the tonoscope they could see the difference!