noun
: a record produced by a sound spectrograph with time shown along the horizontal axis, frequency shown along the vertical axis, and intensity indicated by varying shades of darkness of the pattern
noun
: a record produced by a sound spectrograph with time shown along the horizontal axis, frequency shown along the vertical axis, and intensity indicated by varying shades of darkness of the pattern
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012