NCVS Insights – Science that Resonates

Anatomy of a Spectrogram

September 24, 2024

Volume 2 Issue, 4 – September 2024

This video provides a brief explanation of how spectrograms are constructed as a collection of individual spectra from consecutive points in time across a speech waveform. The difference between “narrow-band” and “wide-band” spectrograms is also explained based on choice analysis window duration. Three-dimensional animations of waveforms, spectra, and spectrograms are used throughout the video to demonstrate spectrographic representations of sound.

Brad Story

Brad Story is a Professor of Speech, Language, and Hearing Sciences. After receiving his Bachelor’s degree in Applied Physics from the University of Northern Iowa, Dr. Story was employed in industry as an acoustics engineer where he developed computer models and instrumentation systems for designing and measuring the performance of mufflers. Odd as it may seem, Dr. Story’s work with mufflers (or acoustic filters as he prefers to call them) led him to pursue a doctoral degree in Speech and Hearing Science at the University of Iowa. In his post-doctoral work he has been employed as a Research Scientist at the University of Iowa and most recently at the Wilbur James Gould Voice Center in Denver, Colorado.

HOW TO CITE

Story, B. (2024), Anatomy of a Spectrogram. NCVS Insights, Vol. 2(4), pp. 3-4. DOI: https://doi.org/10.62736/ncvs135536

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