Whilst it is not necessary to learn the formula for calculating the standard deviation, there may be times when you wish to include it in a report or dissertation. Where x represents each value in the population, Î¼ is the mean value of the population, Ï is the summation (or total), and N is the number of values in the population.
In music, timbre, is the quality of a musical note or sound that distinguishes different types of sound production or musical instruments. The physical characteristics of sound that mediate the perception of timbre include spectrum and envelope. Timbre is also known in psychoacoustics as sound quality or sound color.
coloration, colouration, color, colour - the timbre of a musical sound; the recording fails to capture the true color of the original music. nasality - a quality of the voice that is produced by nasal resonators. plangency, reverberance, sonority, sonorousness, vibrancy, ringing, resonance - having the character of a loud deep sound; the quality of being resonant. stridence, stridency, shrillness - having the timbre of a loud high-pitched sound. register - (music) the timbre that is characteristic of a certain range and manner of production of the human voice or of different pipe organ stops or of different musical instruments.