Loudness – amplitude ... Bookmark; 36. View Answer. That is, the threshold of hearing is 0 decibels. View Answer. ... timbre gives each instrument its own sound when they have _____ pitch and 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. Or loudness of sound is directly proportional to the logarithm of sound. Your teacher will give you a wooden board with two nails in it. Table 1 gives levels in decibels and intensities in watts per meter squared for some familiar sounds. Name two factors on which the heat energy liberated a body depend. Properties of Sound How Does Amplitude Affect Loudness? So, sound is more clear. ... Name the factor that determines: Loudness of the sound heard. As energy reaching the ear depends on square of amplitude, so loudness of sound depends on two factors (z) Amplitude of sound waves and State True or False. a factor perceived by the ear that depends primarily on the amplitude of the wave the observer hears. 1. Further,-“the dew factor at night increases the speed of sound as moisture level increases. Mathematically: L= log⁡I L = K logI -----(1) Where ‘k’ is constant of proportionality. In an attempt to overcome this problem, scales have been developed to correlate loudness with objective measurements of sound. EASY. 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. Energy of a sound source B. C. II. 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. On what factor does loudness of sound depend? 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. The pitch of sound of stringed instrument can be varied by varying its length. Intensity of sound and how it relates to loudness, the decibel levels of different sounds and factors that affect sound intensity. I. Loudness A. ... the speed of sound depends on _____ what its traveling through. Pitch A. The 'loudness' of a sound is based upon its intensity, or power per area. Volume or loudness is determined by the amplitude of the sound wave. Loudness of sound is measured in decibel (dB). 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. The amplitude of the sound wave depends on the vibration caused by the source of the sound. MEDIUM. Question 25 Suggest three measures to limit noise pollution in your locality. 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