Sound Gallery - Reveille

Man in military uniform playing a bugle
Bugle player at Fort Donelson National Battlefield

NPS Photo

Spectrogram of reveille
Spectrogram of reveille. Spectrograms are graphs that visualize sounds. The brightness of the colors shows sounds’ amplitude (loudness) across different frequencies (pitches), shown from bottom to top, and over time, from left to right. This spectrogram visualizes the bugle's complex harmonics, with the black vertical bars showing brief moments of silence between notes

NPS

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Last updated: May 7, 2025