Since human ears are not able to hear each frequency at the same level, perceived loudness is different as we move up and down in frequency. If I play this sound here (please see 00:08 in the video above), and then I play this sound (please see 00:11 in the video above), can you tell what the difference is? 2. is a subjective measure of sound which can be determined by the intensity of certain component of 'sound' such as the base element of a piece of music which are more likely to travel than higher frequencies. Nglish: Translation of loudness for Spanish Speakers, Britannica.com: Encyclopedia article about loudness. SPL is a term calculated from the log of the rms sound pressure of a measured sound related to a reference value. Where frequency and form of vibrations are constant, loudness increases with an increase in sound pressure. Another word for loudness. The loudness of a sound, or volume of a sound wave, can be determined by the amplitude of the sound wave. Loudness of Sound This phenomenon of a sound depending on the amplitude of the sound wave. ˌloudˈspeaker noun 1. an instrument for increasing the loudness of sounds so that they can be heard further away. In acoustics, loudness is the subjective perception of sound pressure. Volume or loudness is determined by the amplitude of the sound wave. 'Nip it in the butt' or 'Nip it in the bud'. Definition of loudness : the attribute of a sound that determines the magnitude of the auditory sensation produced and that primarily depends on the amplitude of the sound wave involved Examples of loudness in a Sentence Recent Examples on the Web What stood out was the loudness… Sound occurs when energy causes air particles to move closer together and further apart. the perceptual strength or amplitude of sound pressure, measured in sones or phons loudness (Noun) Loudness is the characteristic of a sound that is primarily a psychological correlate of physical strength. Synonym Discussion of volume. There are two things that contribute to our perception of sound. Loudness, in acoustics, attribute of sound that determines the intensity of auditory sensation produced. Do you have perfect pitch? A Definition of Loudness Loudness may be defined as that attribute of auditory sensation that corresponds most closely to the physical measure of sound intensity, although, as we shall see, this definition is not accurate in all circumstances. Volume or loudness is determined by the amplitude of the sound wave. Sound is a longitudinal wave and so it is difficult to show the amplitude and frequency on a diagram. the physical strength of the sound pressure level, measured in decibels A purely subjective, but unduly restrictive, definition of sound is also possible, as that which is perceived by the ear. If the guitar string is lightly plucked, the resulting sound is softer, due to the lower level of particle vibration in the air. More formally, it is defined as, "That attribute of auditory sensation in terms of which sounds can … Phon definition, a unit for measuring the apparent loudness of a sound, equal in number for a given sound to the intensity in decibels of a sound having a frequency of 1000 cycles per second when, in the judgment of a group of listeners, the two sounds are of equal loudness. Test Your Knowledge - and learn some interesting things along the way. Send us feedback. 3. The wave is a longitudinal, or compressional, wave. Loud, noisy describe a strongly audible sound or sounds. NOAA Hurricane Forecast Maps Are Often Misinterpreted — Here's How to Read Them. If the guitar string is heavily plucked (pulled farther from its original tight position), the resulting sound is louder, due to the increased vibration of particles in the air caused by the significant movement of the string. If the amplitude of the sound wave is large, then the sound is said to be loud. 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