Sound Waves

The properties of waves are the same for all sorts of waves. If sound waves reflect it is called an echo. When light waves reflect it is simply called a reflection. Waves on the ocean can also reflect if they run into a cliff instead of a sandy beach. Reflected waves often cause what are called standing waves where waves travelling in opposite directions reinforce each other and cancel each other out. One point of the wave will hardly move and another point will move up and down double the distance it would if there is only one wave. This is very dangerous for boats. Light also can be made to create standing waves. In radio, antennas must be adjusted to get a Standing Wave Ratio of 1:1 so it works for electrical waves in a wire as well. In live concerts, standing waves can mean real trouble for the sound engineers trying to balance the reflected waves from the back of the hall or auditorium. It is often better to have such concerts outside to avoid such problems.

Sonar machines rely on the property of sound waves that allows them to bounce off objects and return to the source, a phenomenon known as echo. By calculating the time it takes for the sound wave to bounce back, sonar machines can determine the distance and location of objects underwater.

Sound can travel up to 1 mile (1.6 kilometers) in a quiet outdoor setting with no obstructions. However, in a typical urban environment with buildings and other obstructions, the distance at which you can clearly hear someone yelling is likely to be much shorter, around a few hundred feet.

The wavelength of a signal is calculated by c/f. C is the velocity of the wave and f the frequency of the signal.

Wavelength is defined as the distance between any two successive crests or troughs in case of a mechanical wave.

In case of longitudinal wave, the distance between two successive compressions or rarefactions will be the wavelength.

In case of electromagnetic wave c/f will be the wavelength

Reverberation is the persistence of sound in an enclosed space due to multiple reflections off surfaces. Echo is the distinct repetition of a sound caused by reflection of sound waves off distant surfaces, resulting in a delayed and distinct sound repetition. Think of reverberation as a continuous overlapping of sound reflections, while echo is a distinct, separate repetition of the sound.

when a sound wave hits a wall it refracts and loses velocity but carrys on. if there is another wall within its distace then it will refract gain. this can cause an echo

Phase distortion in sound waves leads to a change in the timing relationship between different frequency components of the sound. This can result in a less accurate representation of the original sound, affecting its timbre and clarity. The sound may sound less natural and more artificial.

Sound -is- vibration. A 'body' totally motionless makes no noise. it is only the movement of the air - which is either moving due to the wind, or because something is passing on vibrations to it, that creates sound.

Our hearing can detect the rhythm of a vibrating substance and we interpret that as sound. Some sounds are beyond our range - either above or below the frequency we can detect.

It is likely true that absolutely everything is capable of absorbing sound waves; if there are materials that cannot, they would be special indeed. Some materials are much better than others, but even the materials that are most resistant would be absorbing small amounts of energy from sound waves, assuming that the material is in a medium (like air) capable of transporting sound.

The loudness of a sound is related to how much energy is transmitted to the air. Clapping your hands transmits a small amount of energy. Detonating a stick of dynamite transmits MUCH more energy. The amplitude of the sound wave is much greater, and the noise, louder.

sound waves are compression waves, or longitudinal waves. sounds that we hear are actually just compressions and rarefactions of air particles, meaning the air particles move closer together for a time period then spread apart farther then they normally would(a rarefaction)

The pitch of sound refers to how high or low a sound is perceived. It is determined by the frequency of the sound waves, with higher frequencies producing higher pitched sounds and lower frequencies producing lower pitched sounds.

The frequency of this sound wave is very near constant.

Balloons can make some fun noises when you pinch and stretch the opening as you let the air out! The reason a balloon makes a higher pitch when you pull tighter comes from the amount of movement allowed. Because the air pushes through the opening of the balloon against the tightened rubber, this rubber vibrates as it gets pushed apart and pushes back together against the air. The tighter this opening, the less leeway the rubber has to move, and the faster it will vibrate, causing a higher pitch.

Well, it has to follow the inverse square law, so that as distance increases, the sound intensity drops by the square of the proportionate change in distance. The intensity will be 1/16 at 4 times the distance.

Commercially sold television receivers have always included a circuit for sound.

Historically, the first successful transmission of synchronized sound and video took place on 13 June, 1925 when Charles Francis Jenkins sent a 48 line mechanical system image of film and sound five miles in a test transmission.

Symbol amplitude refers to the magnitude or strength of a symbol in a communication system. It is the intensity of the signal representing a specific symbol, which can impact the signal-to-noise ratio and the quality of the communication. In digital communication, symbol amplitude is crucial for accurate symbol detection and decoding.

The time it takes for the sound to travel to the cliff and back as an echo is 4 seconds. Since the sound wave travels twice the distance to the cliff and back, the total distance traveled is 2 × 680 = 1360 meters. Using the formula speed = distance/time, we can calculate the speed of sound. The period of the sound wave is the time it takes for one complete cycle, which in this case is the time it takes for the sound to travel to the cliff and back, which we found to be 4 seconds.

Reverberation can be reduced by varios methods:

1:Hang up heavy drapes from the ceiling to the floor.

2:Coverhard floors with thick carpet.

3:Install acoustical ceiling tiles in the room.

4:Increase the insulation above the ceiling of the room and between the walls.

Sonic the hedgehog is a gaming character and a franchise created by SEGA to rival Nintendo's Mario.

The term Sonic can also be used to describe the speed of sound e.g. Sonic Boom, super sonic, sonic speed.

The frequency of a typical hand clap is around 250 to 500 Hz. This means that the clap creates 250 to 500 sound waves per second.

The frequency of the sound wave will remain unchanged when it refracts from air to water.

Forget the A-weighting filter to measure in dBA. In vacuum (that means no surrounding medium) there is no transportation of sound possible. So there will be no sound level.

The frequency of a sound wave determines the pitch of the sound, with higher frequencies corresponding to higher pitches and lower frequencies corresponding to lower pitches.

Sound travels in longitudinal waves, which means that the particles of the medium move in the same direction as the wave is propagating. This is in contrast to transverse waves where the particles move perpendicular to the wave's direction.