måndag 23 Sep 2013, 1:10

I usually adopt my own variation of the Wiki definition for 'music':

Music is an Art form. It consists of fluctuations of sound and/or silence. Silence is the absence of sound. Sound is a mechanical wave. Sound is manifested as an oscillation of air pressure (or some other medium).

Sound is transmitted through some medium, such as gas (e.g. air), solid (e.g. metal) or liquid (e.g. water). It is composed of frequencies within the range of animal hearing. On human hearing: it is restricted to sounds that are perceptible by the human ear. These sounds have frequencies from around 20 Hertz (bassy) to 20 Kilohertz ( high-pitched). Hertz is the number of cycles per second. Therefore, high-pitched sounds of 20 Kilohertz are 20 thousand air-pressure oscillations per second. (or 1 cycle every 50 microseconds (μs). Cesium-133 atom is the benchmark for the hertz definition.

P.S. 1 :
Air pressure (P) is directly correlated to ambient temperature(T) , gas volume (V), and substance amount (n), according to the Universal Gas Law:
P * V = n * R * T
where
P = the absolute pressure of the gas, in Pa (pascal)
n = amount of substance, in mol
V = the volume of the gas, in cubic meters (m^3)
T = the absolute temperature of the gas, in Kelvin (K)
R = the universal gas law constant of 8.3145 m3·Pa/(mol·K)

P.S. 2 :
Excerpt off Dawkins' Unweaving the Rainbow :
"The feeling of awed wonder that science can give us is one of the highest experiences of which the human psyche is capable. It is a deep aesthetic passion to rank with the finest that music and poetry can deliver. It is truly one of the things that make life worth living and it does so, if anything, more effectively if it convinces us that the time we have for living is quite finite. "

Nodas
23-09-2013