sound spectrograph

noun

1

: an instrument that obtains a sound spectrum by analyzing a complex sound into its component elements

2

: an electronic instrument that produces a time-frequency-intensity analysis of sound recorded on a magnetic tape loop by repeatedly playing the sound into a variable filter and recording the output by means of a stylus on electrically sensitive paper and by synchronizing the movement of the tape loop and the paper so that successive lines drawn by the stylus along the horizontal axis of the paper correspond to the shifting frequency range of the filter

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

1. Expanded definitions
2. Detailed etymologies
3. Advanced search tools
4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now