11. to cause (something, such as an instrument) to make a sound or (of an instrument, etc) to emit a sound 12. to announce or be announced by a sound: to sound the alarm. 13. (intr) (of a sound) to be heard 14. (intr) to resonate with a certain quality or intensity: to...
Sound loudness is measured in terms of intensity or pressure, both representing the extent to which air molecules are condensed with each phase of the sound wave. The amplitude of the waves determines the intensity of the sound; the louder the sound, the greater the amplitude. A log scale, ...
The intensity or loudness of a sound depends upon the extent to which the sounding body vibrates, i.e., the amplitude of vibration. A sound is louder as the amplitude of vibration is greater, and the intensity decreases as the distance from the source increases. Loudness is measured in ...
7."Noise" cannot be measured in the same way because it refers to the psychological effect of sound and its level of "intensity" depends on the situation.这是因为噪音所指的是声音的心理效果,其强度级别依照具体情况而定。 8.A. Athletic Fish-Eye Seat Base is the upgrade of enhanced rubber sea...
Intensity refers to the amount of energy transmitted by the disturbance. It's proportional to the square of the amplitude. Intensity is measured in watts per square centimeter or in decibels (db). The decibel scale is defined as follows: An intensity of 10-16 watts per square centimeter equal...
We measure the loudness or intensity of sound in a unit called Decibel (dB). Decibel is a logarithmic scale, as we know that {eq}\begin{align} \bet...Become a member and unlock all Study Answers Start today. Try it now Create an ac...
Intensity, or loudness, is the strength of the pressure of these radiating waves and is measured in decibels. The human ear responds to intensity in a range from zero to 120 decibels. Any sound with pressure over 120 decibels is painful to the human ear. The speed of sound is generally ...
In this paper I challenge the widely held assumption that loudness is the perceptual correlate of sound intensity. Drawing on psychological and neuroscientific evidence, I argue that loudness is best understood not as a representation of any feature of a sound wave, but rather as a reflection of...
Fechner law.Let /denote the intensity of a sound .The least intense sound that can be heard is I'=10^(-12) watt/m^2 at a frequency of 1000 cycles/sec(this value is called the threshold of audibility).If L denotes the loudness of a sound,measured in decibels,then L=10log(I/I')...
Note! Since the sound intensity level may be difficult to measure it is common to use sound pressure level measured in decibels instead. Note that doubling sound pressure raises the sound pressure level with 6 dB. Loudness Sound loudness is a subjective term describing the ear's perception of ...