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Musical acoustics or music acoustics is a multidisciplinary field that combines knowledge from physics, [1] [2] [3] psychophysics, [4] organology [5] (classification of the instruments), physiology, [6] music theory, [7] ethnomusicology, [8] signal processing and instrument building, [9] among other disciplines.
The Sound Barrier is a 1952 British aviation drama film directed by David Lean. It is a fictional story about attempts by aircraft designers and test pilots to break the sound barrier . It was David Lean's third and final film with his wife Ann Todd but it was his first for Alexander Korda 's London Films , following the break-up of Cineguild .
[189] [190] To compress the large range of sound levels encountered in everyday life into the small dynamic range of the hearing-impaired person, hearing aids apply amplitude compression, which is also called automatic gain control (AGC). The basic principle of such compression is that the amount of amplification applied to the incoming sound ...
Musicology (from Greek μουσική mousikē 'music' and -λογια-logia, 'domain of study') is the scholarly study of music.Musicology research combines and intersects with many fields, including psychology, sociology, acoustics, neurology, natural sciences, formal sciences and computer science.
Example of airborne and structure-borne transmission of sound, where Lp is sound pressure level, A is attenuation, P is acoustical pressure, S is the area of the wall [m²], and τ is the transmission coefficient. Acoustic transmission is the transmission of sounds through and between materials, including air, wall, and musical instruments.
The sound produced by this instrument has been variously described as "smoky", "metallic", "unearthly" and "majestic". [3] Wagner tubas (or Tenortuben and Basstuben ) are also referred to as Wagnertuben, Waldhorntuben, Bayreuth-tuben, Ring-tuben, or Horn-tuben by German writers, but it is most common to refer to them in English as Wagner tubas.
The sound barrier or sonic barrier is the large increase in aerodynamic drag and other undesirable effects experienced by an aircraft or other object when it approaches the speed of sound. When aircraft first approached the speed of sound, these effects were seen as constituting a barrier, making faster speeds very difficult or impossible.
The study of sound and musical phenomena prior to the 19th century was focused primarily on the mathematical modelling of pitch and tone. [4] The earliest recorded experiments date from the 6th century BCE, most notably in the work of Pythagoras and his establishment of the simple string length ratios that formed the consonances of the octave.