Musical Drums with Harmonic Overtones [PDF]
Nature, 1920 IT is well known that percussion instruments as a class give inharmonic overtones, and are thus musically defective. We find on investigation that a special type of musical drum which has long been known and used in India forms a very remarkable exception to the foregoing rule, as it gives harmonic overtones having the same relation of pitch to the ...
Raman, C. V., Kumar, Sivakali
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Information generated by the moving pinnae of Rhinolophus rouxi: tuning of the morphology at different harmonics. [PDF]
PLoS ONE, 2011 Bats typically emit multi harmonic calls. Their head morphology shapes the emission and hearing sound fields as a function of frequency. Therefore, the sound fields are markedly different for the various harmonics.
Dieter Vanderelst +3 more
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Pure-tone birdsong by resonance filtering of harmonic overtones [PDF]
Proceedings of the National Academy of Sciences, 2003 Pure-tone song is a common and widespread phenomenon in birds. The mechanistic origin of this type of phonation has been the subject of long-standing discussion. Currently, there are three hypotheses. ( i ) A vibrating valve in the avian vocal organ, the syrinx, generates a multifrequency
Beckers, G.J.L. +2 more
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Gambus Hadhramaut: The Malaysian Malay Lute Tuning Retrieval
BioResources, 2023 This study identified elements in a simple homemade gambus from a local crafter using a scientific approach. The gambus was made from geronggang wood (Cratoxylum arborescens), a light Malaysian hardwood with pink sapwood, distinct from the heartwood with
Sinin Hamdan +4 more
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Quasi-normal modes and microscopic description of 2D black holes
Journal of High Energy Physics, 2022 We investigate the possibility of using quasi-normal modes (QNMs) to probe the microscopic structure of two-dimensional (2D) anti-de Sitter (AdS2) dilatonic black holes.
M. Cadoni, M. Oi, A. P. Sanna
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Preservation of the harmonic overtones in the violin family beyond Stradivari
, 2022 Three hundred years ago, Antonio Stradivari enjoyed the golden period of the violin making in the human history. Luthiers and researchers endeavor to study his legendary legacy. Unfortunately, a consensus that the present progress has reached his level remains lacking.
Su, Li +6 more
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Overtones or higher harmonics? Prospects for testing the no-hair theorem with gravitational wave detections [PDF]
Physical Review D, 2020 11 pages, 9 figures, version accepted for publication on ...
Iara Ota, Cecilia Chirenti
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Post-noon two-minute period pulsating aurora and their relationship to the dayside convection pattern [PDF]
Annales Geophysicae, 1999 Poleward-moving auroral forms, as observed by meridian-scanning photometers, in the vicinity of the cusp region are generally assumed to be the optical signature of flux transfer events.
S. E. Milan +5 more
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Borneo Lute ‘Sape’: The Frequency Spectrum and Time Frequency Analysis (TFA)
BioResources, 2023 Sound elements were studied for a six strings sape, a traditional instrument. The frequency was evaluated using a frequency spectrum and a time frequency plane. PicoScope oscilloscopes and Adobe Audition version 3 were used to record the acoustic spectra.
Sinin Hamdan +4 more
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Multi-harmonic Rutherford island theory
Physics of Plasmas, 2022 Rutherford island theory, which governs the nonlinear evolution of tearing modes in tokamak plasmas, is generalized to take into account situations in which the conventional one-harmonic approximation is not valid. The analysis incorporates non-inductive
R. Fitzpatrick
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