EntityQ1331774· pop 29· linked from 415 articlesfundamental frequencySign in to savelowest frequency of a periodic waveform, such as soundConnectionsstring instrumentEntitystanding waveEntityovertoneEntityspectral densityEntityequal-loudness contourEntitybladder fiddleEntitysoundEntityPiConceptInternational Standard Book NumberEntityfrequencyEntityacousticsEntityhertzEntitynoiseEntityThomas YoungEntityHermann von HelmholtzEntitygreatest common divisorEntityultrasoundEntityechoEntityJew's harpEntityoscillationEntityCategoriesAcousticsFourier analysisMusical tuningSpectrum (physical sciences)