1) Recording 
• (n.) An autographic record made by an oscillograph.
Os'cil·lo·gram noun [ Latin oscillare + -gram .] (Electricity) An autographic record made by an oscillograph. 
[n] - the recording produced by an oscillograph
oscillogram A record produced by an oscillograph.
A visual representation of a sound, plotted on a graph as relative loudness (vertical axis) versus time (horizontal axis). The vertical axis actually is a measure of the increase or decrease in air pressure (measured in micropascals) associated with the sound wave, which determines the loudness. The oscillogram does not show sound frequency.
noun the recording produced by an oscillograph
the record produced by the action of an oscillograph or oscilloscope.