To make a noise; to utter a voice; to make an impulse of the air that shall strike the organs of hearing with a perceptible effect.
To cause to make a noise; to play on; as, to sound a trumpet or a horn; to sound an alarm.
Waves carried by variations in air pressure. The speed of sound waves in air at room temperature and pressure is roughly 343 m/s.
A pressure wave motion propagated in an elastic medium (air) producing an auditory sensation in the ear by the change of pressure at the ear. Sound waves are produced by a vibrating body in contact with air.
These are audible vibrations transmitted by a medium (such as air).
Acoustical energy in waves generally accepted to be between 20 and 20,000 cycles per second.
Anything perceived by the ear.
Sound is the mechanical disturbance of air.
the energy of vibration that causes the sensation of hearing
A vibration which can be detected by the organs of hearing.
An audible vibration transmitted through a medium such as air.
the subjective sensation of hearing something; "he strained to hear the faint sounds"
mechanical vibrations transmitted by an elastic medium; "falling trees make a sound in the forest even when no one is there to hear them"
the sudden occurrence of an audible event; "the sound awakened them"
make a certain noise or sound; "She went `Mmmmm'"; "The gun went `bang'"
utter with vibrating vocal chords
an ear And gods with none believing Being chased by the lamb A knife
a sensation produced by the vibratory movement of a body on the ear drum
a vibration, carried upon the molecules of the air
A longitudinal wave, and can be pushed in all directions. It needs a medium to move, as without one it produces no noise. Thus, sound cannot be heard in space.
(1) Oscillation in pressure, stress, particle displacement, particle velocity, etc. in a medium with internal forces (e.g., elastic or viscous), or the superposition of such propagated oscillations. (2) Auditory sensation evoked by the oscillation described above (ANSI S1.1-1994: sound).
Sound is vibration. In order for something to produce a sound it has to vibrate. These vibrations disturb the air, causing it to move back and forth as well, referred to sound waves. If unobstructed, these waves spread outward from the vibrating object like ripples on a pond. When these waves reach your eardrum, they cause it to vibrate, which in turn stimulates a nerve that tells your brain that you hear something.
A kind of energy contained in vibrating matter. Sound travels through solids, liquids, and gases. The eardrums convert this vibrational energy into signals that travel along nerves to the brain, which interprets them as voices, music, noise, etc.
There are two definitions. Physically, sound consists of pressure fluctuations, at any frequency, that propagate in an elastic medium, such as air. Perceptually, sound is the human response to those physical pressure fluctuations, which are normally considered to occur in the frequency range 20 Hz to 20 kHz.
High and low pressure areas of the longitudinal wave.
the transfer of molecular vibrations from an originating source within any medium (gas, liquid or a solid); these vibrations can be perceived through touch or your ear
A vibration or pressure oscillation that is detectable by the ear drum.
A series of compressions and vibrations, caused by some sound source, travelling through air to another medium.
Sound is an oscillation in pressure, stress particle displacement, particle velocity in a medium. Sound produces an auditory sensation caused by the oscillation.
1) Moving pressure variations in air caused by something vibrating between 20 times a second and 20,000 times a second or similar variations in other substances like water. 2) Loosely, any audio signal regardless of its energy form.
An oscillation in pressure, particle displacement, particle velocity or other physical parameter, in a medium with internal forces that causes compression and rarefaction of that medium. The description of sound may include any characteristic of such sound, including duration, intensity and frequency.
Sound is considered both in terms of the sound pressure waves travelling in air (pressures superimposed on the atmospheric pressure) and the corresponding aural sensation. Sound can be "structure-borne", that is, transmitted through any solid elastic medium, but is audible only at points where the solid medium "radiates" the pressure waves into the air.
most air conditioning systems are relatively quiet and do not cause noise disturbance to users or the environment. It is common to illustrate equipment sound levels as either sound power, or sound pressure in dBA (deciBel on the A scale). This can be very confusing and the resultant room noise level is relative to many other factors, resulting in a room noise level, often expressed as a NR or NC level.
Any fluctuations in air pressure, usually from a vibrating object that can be heard by the human ear. Generally refers to sounds which are audible within the 20 Hz to 20,000 Hz range.
Vibrational energy. A pressure disturbance propagated through a medium and displacing molecules from a state of equilibrium. The auditory perception of this disturbance. Something heard by the ears.
Mechanical energy vibrations transmitted as waves through a solid, liquid, or a gas that can be detected by the human ear.
Pressure waves traveling through the air or in other elastic materials.
a form of energy caused by vibration
Produced by vibrations that cause air molecules to move back and forth.
insulation section of insulating material that damps sound waves.
Sound is a disturbance of mechanical energy that propagates through matter as a longitudinal wave. Sound is characterized by the properties of sound waves, which are frequency, wavelength, period, amplitude, and speed.