Further,-“the dew factor at night increases the speed of sound as moisture level increases. 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. Or loudness of sound is directly proportional to the logarithm of sound. View Answer. 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. The 'loudness' of a sound is based upon its intensity, or power per area. Name two factors on which the heat energy liberated a body depend. Loudness of sound is measured in decibel (dB). MEDIUM. 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. That is, the threshold of hearing is 0 decibels. ... the speed of sound depends on _____ what its traveling through. Answer. In an attempt to overcome this problem, scales have been developed to correlate loudness with objective measurements of sound. 1. The amplitude of the sound wave depends on the vibration caused by the source of the sound. I. Loudness A. View Answer. Your teacher will give you a wooden board with two nails in it. The pitch of a sound depends on the frequency while loudness of a sound depends on the amplitude of sound waves. 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. Mathematically: L= logI L = K logI -----(1) Where ‘k’ is constant of proportionality. 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. Amazingly, many musicians, who have been trained are capable of detecting a difference in frequency between two separate sounds that are as little as 2 Hz. a factor perceived by the ear that depends primarily on the amplitude of the wave the observer hears. Properties of Sound How Does Amplitude Affect Loudness? Loudness ofsound is not simply the energy reaching the human ear, but it also tells about the sensitivity of human ear detecting this energy. The pitch of sound of stringed instrument can be varied by varying its length. So, sound is more clear. EASY. As energy reaching the ear depends on square of amplitude, so loudness of sound depends on two factors (z) Amplitude of sound waves and Question 25 Suggest three measures to limit noise pollution in your locality. State True or False. On what factor does loudness of sound depend? Table 1 gives levels in decibels and intensities in watts per meter squared for some familiar sounds. Energy of a sound source B. C. II. ... 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