scholarly journals Primitive musical instruments using Helmholtz resonators

1986 ◽  
Vol 80 (S1) ◽  
pp. S101-S101
Author(s):  
Ian M. Firth
Keyword(s):  
Musical Instruments ◽  
Helmholtz Resonators

scholarly journals Radiation and Scattering

2020 ◽  
pp. 543-620
Author(s):  
Steven L. Garrett
Keyword(s):  
Optical Absorption ◽  
Plane Waves ◽  
Musical Instruments ◽  
Laser Beams ◽  
Extensive Investigation ◽  
Electrical Discharges ◽  
Engine Exhaust ◽  
Reinforcement System ◽  
Helmholtz Resonators ◽  
Sound Reinforcement

Abstract At this point, we have made a rather extensive investigation into the sounds that excite Helmholtz resonators as well as the departures from equilibrium that propagate as plane waves through uniform or inhomogeneous media. We have not, as yet, dealt with how those sounds are actually produced in fluids. Our experience tells us that sound can be generated by vibrating objects (e.g., loudspeaker cones, stringed musical instruments, drums, bells), by modulated or unstable flows (e.g., jet engine exhaust, whistles, fog horns, speech), by electrical discharges in the atmosphere (i.e., thunder), or by optical absorption (e.g., modulated laser beams). In this chapter, we will develop the perspective and tools that will be used for the calculation of the radiation efficiency of various sources and combinations of sources, like the sound reinforcement system shown in Fig. 12.1.

REREADING TEXTS OF MUSIC AND DANCE IN THE HEBREW BIBLE: THE SPIRITUALITY OF MUSIC AND DANCE IN ZIMBABWE

2017 ◽  
Vol 25 (1) ◽  
pp. 72-98
Author(s):  
Temba T. Rugwiji
Keyword(s):  
Hebrew Bible ◽  
Land Reform ◽  
Critical Role ◽  
Musical Instruments ◽  
World Music ◽  
Human Existence ◽  
Biblical Text ◽  
Ancient Israel ◽  
Formed Part ◽  
The Church

The Hebrew Bible depicts that music and dance formed part of worship and reverence of Yahweh in which various musical instruments were played during ancient biblical times. In the modern post-biblical world, music and dance characterise every context of human existence either in moments of love, joy, celebration, victory, sorrow or reverence. In Zimbabwe, music — which is usually accompanied by dance — serves various purposes such as solidarity towards or remonstration against the land reform, despondency against corruption, celebration, giving hope to the sick, worship as in the church or appeasing the dead by those who are culturally-entrenched. Two fundamental questions need to be answered in this article: 1) What was the significance of music and dance in ancient Israel? 2) What is the significance of music and dance in Zimbabwe? In response to the above questions, this essay engages into dialogue the following three contestations. First, texts of music, musical instruments and dance in the Hebrew Bible are discussed in view of their spiritual significance in ancient Israel. Second, this study analyses music and dance from a faith perspective because it appears for the majority of Gospel musicians the biblical text plays a critical role in composing their songs. Third, this article examines music and dance in view of the spirituality which derives from various genres by Zimbabwean musicians in general. In its entirety, this article attempts to show that the Zimbabwean society draws some spirituality from music and dance when devastated by political, cultural or socio-economic crises.

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