EASY. Sound level is not a measure of loudness, as loudness is a subjective factor and depends on the characteristics of the ear of the listener. Loudness ofsound is not simply the energy reaching the human ear, but it also tells about the sensitivity of human ear detecting this energy. Answer. Loudness of sound is measured in decibel (dB). Volume or loudness is determined by the amplitude of the sound wave. Mathematically: L= logI L = K logI -----(1) Where ‘k’ is constant of proportionality. 1. Further,-“the dew factor at night increases the speed of sound as moisture level increases. That is, the threshold of hearing is 0 decibels. MEDIUM. Properties of Sound How Does Amplitude Affect Loudness? The decibel level of a sound having the threshold intensity of 10 −12 W/m 2 is β = 0 dB, because log 10 1 = 0. Name two factors on which the heat energy liberated a body depend. Intensity of sound and how it relates to loudness, the decibel levels of different sounds and factors that affect sound intensity. The loudness of a sound depends on two factors: the amount of energy it ta kes to ma ke the so und and the distance from the source of the sound. Loudness – amplitude ... Bookmark; 36. On what factor does loudness of sound depend? The amplitude of the sound wave depends on the vibration caused by the source of the sound. In an attempt to overcome this problem, scales have been developed to correlate loudness with objective measurements of sound. Long Answer Type Question. So, sound is more clear. The 'loudness' of a sound is based upon its intensity, or power per area. When looking at a sound wave graph, the higher-pitched sounds feature waves that are closer together, or more tightly wound, while lower-pitched sounds feature waves that are farther apart. State True or False. The pitch of a sound depends on the frequency while loudness of a sound depends on the amplitude of sound waves. ... Name the factor that determines: Loudness of the sound heard. Table 1 gives levels in decibels and intensities in watts per meter squared for some familiar sounds. Name the phenomenon that causes a loud sound when the stem of a vibrating tuning fork is kept pressed on the surface of a table. View Answer. As energy reaching the ear depends on square of amplitude, so loudness of sound depends on two factors (z) Amplitude of sound waves and I. Loudness A. The pitch of sound of stringed instrument can be varied by varying its length. If Lo represent the loudness of the faintest audible sound of intensity Io and L is the loudness of an unknown sound of intensity I, then above equation can be written as. Or loudness of sound is directly proportional to the logarithm of sound. 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