نتایج جستجو برای: brass

تعداد نتایج: 2289  

Journal: :Journal of the Japan Society of Precision Engineering 1956

Journal: :Journal of the Japan Society of Powder and Powder Metallurgy 1966

Journal: :Transactions of the Japan Institute of Metals 1970

Journal: :Archives of Foundry Engineering 2014

Journal: :International journal of occupational safety and ergonomics : JOSE 2011
Emil Kozłowski Jan Zera Rafał Młyński

In this study, change in A-weighted and 1/3 octave sound pressure levels (SPLs) was used to assess the influence of wearing earplugs by musicians on their musical performances. Seven soloists and 3 music assembles performed 4 pieces of music with musician's earplugs donned and doffed. They used silicon custom moulded earplugs with acoustic filters designed to attenuate sound by 9, 15 or 25 dB. ...

2001
Neville H. Fletcher

Progress made over the past decade in understanding the mechanisms of sound production in music wind instruments is reviewed. The behavior of air columns, horns, and fingerholes is now fairly well understood, and most recent interest centers on details of the sound generator — the reed in woodwinds, the lips in brass instruments, and the air jet in flute-family instruments. Not only do these ge...

2016
David Gibson

It is proposed that by using computing analysis software and 3D fabrication techniques, low cost plastic trumpet bells could be produced for different music genres by altering their timbres. These may be attached to the trumpet in a similar manner to that of a tuning bell trumpet. The novel bells are designed to eliminate or enhance particular harmonics to change their brightness by altering th...

2016
Michael Wolff

In this experiment, κ, the thermal conductivity of a rod of brass, was measured by periodically heating one end of the rod. Turning the heater attached to the rod on and off with a 10 mHz square wave signal, waves of heat were sent along the length of the rod, measured by two thermistors a distance ∆x apart. Taking these temperatures as a function of time, a Fourier transform was applied to a 1...

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