Results 211 to 220 of about 6,510 (259)
Some of the next articles are maybe not open access.
SIAM Journal on Computing, 1984
Let \((p_ 1,p_ 2,...,p_ n)\) be a probability distribution, \(\pi =(\pi_ 1,\pi_ 2,...,\pi_ n)\) be a permutation of 1,2,...,n and \(X_ 1,X_ 2,...,X_ k\) be k independent and identically distributed random variables with distribution \(P(X=i)=p\pi_ i\). It is known that the organ pipe permutation \(\pi^*\) makes the range \[ D(k,\pi)=\max_{1\leq j\leq k}
M. Keane +2 more
openaire +1 more source
Let \((p_ 1,p_ 2,...,p_ n)\) be a probability distribution, \(\pi =(\pi_ 1,\pi_ 2,...,\pi_ n)\) be a permutation of 1,2,...,n and \(X_ 1,X_ 2,...,X_ k\) be k independent and identically distributed random variables with distribution \(P(X=i)=p\pi_ i\). It is known that the organ pipe permutation \(\pi^*\) makes the range \[ D(k,\pi)=\max_{1\leq j\leq k}
M. Keane +2 more
openaire +1 more source
The Overblowing of Organ Pipes
The Journal of the Acoustical Society of America, 1943This paper reports preliminary results of research on beating phenomena observed when organ pipes are blown at pressures substantially above normal. Various investigators have suggested that the obnoxious beating resulting from overblowing comes from inharmonic partials, vibration of pipe walls, and the like.
C. P. Boner, R. B. Newman
openaire +1 more source
Transactions of the IRE Professional Group on Antennas and Propagation, 1952
In designing many scanning antennas, it is desirable to move a feed horn for an objective, a lens, or a reflector, along a curve on the focal surface of the objective. The most direct way to solve this problem is to move a horn on the desired curve mechanically; however, there are mechanical and electrical problems inherent in this type scanner which ...
G. D. M. Peeler +2 more
openaire +1 more source
In designing many scanning antennas, it is desirable to move a feed horn for an objective, a lens, or a reflector, along a curve on the focal surface of the objective. The most direct way to solve this problem is to move a horn on the desired curve mechanically; however, there are mechanical and electrical problems inherent in this type scanner which ...
G. D. M. Peeler +2 more
openaire +1 more source
Nature, 1924
THE work of Principal J. A. Aldis (NATURE, Aug. 30, p. 309) on the Bicylindron is not only of practical importance to the scientific pipe-builder, but also constitutes an important addition to the acoustical theory of the organ-pipe. The Bicylindron as invented by Mr.
openaire +1 more source
THE work of Principal J. A. Aldis (NATURE, Aug. 30, p. 309) on the Bicylindron is not only of practical importance to the scientific pipe-builder, but also constitutes an important addition to the acoustical theory of the organ-pipe. The Bicylindron as invented by Mr.
openaire +1 more source
The Journal of the Acoustical Society of America, 2012
An organist’s perspective on pipe organ acoustics. The range of frequencies produced by a large pipe organ covers 10 Hz to over 10,000 Hz. Three significant pipe organs in the Kansas City metro area will be discussed: the Julia Kauffman Casavant at the Kauffman Center for the Performing Arts in Kansas City (installation completed early 2012) and the ...
openaire +1 more source
An organist’s perspective on pipe organ acoustics. The range of frequencies produced by a large pipe organ covers 10 Hz to over 10,000 Hz. Three significant pipe organs in the Kansas City metro area will be discussed: the Julia Kauffman Casavant at the Kauffman Center for the Performing Arts in Kansas City (installation completed early 2012) and the ...
openaire +1 more source
2019
The pipe organ is the only musical instrument inseparably associated with the room acoustics of the building for which it was constructed (Cathedral, church, concert hall, private residence). Historical pipe organs are items belonging to the cultural heritage of humanity, which deserve special care for restoration, conservation and preservation ...
openaire +1 more source
The pipe organ is the only musical instrument inseparably associated with the room acoustics of the building for which it was constructed (Cathedral, church, concert hall, private residence). Historical pipe organs are items belonging to the cultural heritage of humanity, which deserve special care for restoration, conservation and preservation ...
openaire +1 more source
Aeroacoustical coupling and synchronization of organ pipes
The Journal of the Acoustical Society of America, 2016A synchronization experiment on two mutual interacting organ pipes is compared with a theoretical model which takes into account the coupling mechanisms by the underlying first principles of fluid mechanics and aeroacoustics. The focus is on the Arnold-tongue, a mathematical object in the parameter space of detuning and coupling strength which ...
Fischer, Jost Leonhardt +2 more
openaire +3 more sources
SYNCHRONIZATION OF HIGHER HARMONICS IN COUPLED ORGAN PIPES
International Journal of Bifurcation and Chaos, 2007We report results on the synchronization of two organ pipes positioned side by side. Special attention is put on the synchronization of the higher harmonics. As possible explanation, classical theory provides the amplitude death as explanation for the reduction to almost silence of two coupled organ pipes.
M. Abel, S. Bergweiler
openaire +2 more sources
2006
Abstract Over 2000 years ago, the story goes, a Chinese Emperor was saved in battle by the action of a lowly farmer. Perhaps it was the Emperor Qin-Shi-Huang, who is sometimes called the ‘First Emperor’ because he was the first to unite China into something resembling the huge country we know today, and he must have fought many bloody ...
openaire +1 more source
Abstract Over 2000 years ago, the story goes, a Chinese Emperor was saved in battle by the action of a lowly farmer. Perhaps it was the Emperor Qin-Shi-Huang, who is sometimes called the ‘First Emperor’ because he was the first to unite China into something resembling the huge country we know today, and he must have fought many bloody ...
openaire +1 more source
Jet wave amplification in organ pipes
The Journal of the Acoustical Society of America, 1998The amplification factor of an air jet waving over the mouth is estimated from flow visualization of the smoked jet, where the velocity ranges from 7–33 m/s, the Reynolds number from 1000–5000, and the sounding frequency from 130–580 Hz. The jet length is 15.8 and 10.2 mm in two models, while the jet thickness is 2.2 mm in both.
openaire +1 more source