Interaural Time Difference (ITD) between left ear (top) and right ear (bottom). [sound source: 100 ms white noise from right] Interaural Level Difference (ILD) between left ear (left) and right ear (right).

The interaural time difference is the time interval between when a sound enters one ear and when it enters the other ear. In principle, this is a rather straightforward concept. A sound coming to us from the left will enter our left ear a split second before it enters our right ear.

On average, people can localize sounds – Directly in front of them most accurately – To the sides and behind their heads least accurately Page 5 Location cues are not contained in the receptor cells like on the retina in vision; location for sounds must be calculated through other cues.

When sounds are light treble sounds (over 1 kHz), the wavelength plays an essential role for the brain in determining the sound direction. If the sound comes from a direction to the right of the face, the head will prevent the sound waves from reaching the left ear.

Sound source localization is paramount for comfort of life, determining the position of a sound source in 3 dimensions: azimuth, height and distance. It is based on 3 types of cue: 2 binaural (interaural time difference and interaural level difference) and 1 monaural spectral cue (head-related transfer function).

People with spatial hearing loss have difficulty processing speech that arrives from one direction while simultaneously filtering out ‘noise’ arriving from other directions. Research has shown spatial hearing loss to be a leading cause of central auditory processing disorder (CAPD) in children.

Auditory Neuropathy is a condition where someone with or without hearing loss experiences problems with perceiving speech. They may be able to hear sounds just fine, but still have difficulty recognizing spoken words. …

The inability to distinguish spatial cues is known as spatial hearing loss. For example, if a person suffers from spatial loss of hearing, they would likely be unable to tell where a sound came from. Spatial loss of hearing is especially common in children as well as adults over the age of 60.

The brain uses interaural, time, amplitude, frequency and phase differences to locate sounds. In the case of the sounds coming from behind you versus those in front of you, time, phase, and amplitude will be equal at both ears for the most part. However, there is a frequency difference due to the pinna effect.

Answer. Answer: Having two ears helps us to determine the direction of sound waves. Time lag, wave length and tone – all these factors play important parts for the brain when determining the direction of sound.

Our ability to perceive sound direction works through a process known as binaural hearing, which essentially means “hearing with two ears”. Through the course of evolution, it turned out that this was the system most effective at allowing animals to gauge the direction of sounds in their environment.

The vibrations can travel through solids, liquids or gases. Sound cannot travel through a vacuum because there are no particles to carry the vibrations. The sound travels faster in solids than it does in liquids or gases as the speed depends on the density of the material.

vacuum

solids

Sound waves are travelling vibrations of particles in media such as air, water or metal. So it stands to reason that they cannot travel through empty space, where there are no atoms or molecules to vibrate.

Reverberation is the persistence of sound after the sound source has been stopped. It results from a large number of reflected waves which can be perceived by the brain as a continuous sound. On the other hand, an echo occurs when a pulse of sound can be heard twice.

The speed of light in a vacuum is 186,282 miles per second (299,792 kilometers per second), and in theory nothing can travel faster than light. In miles per hour, light speed is, well, a lot: about mph. If you could travel at the speed of light, you could go around the Earth 7.5 times in one second.

During the propagation of sound, the particles of the medium receive these vibrations and transfer them to the surrounding particles, allowing sound to travel. So what does happen to Sound in a Vacuum? In a vacuum, there are no (or very few) particles that can transfer and carry vibrations, so the sound cannot travel.

First, let’s think about why sound does not travel forever. Sound cannot travel through empty space; it is carried by vibrations in a material, or medium (like air, steel, water, wood, etc). So, the sound wave gets smaller and smaller until it disappears.

Light waves are electromagnetic in nature. Thus the light can travel in vacuum. On the other hand, sound waves require a medium for their propagation. They are mechanical waves and cannot travel in vacuum.

so light can travel through space because it doesn’t require another medium to move from one place to another. Light is a wave, it doesn’t need a medium, whereas sound is just atoms of air or another medium vibrating. Space is a vacuum, meaning there is nothing that can vibrate to create the sound.

YES, light can be destroyed , but its energy cannot be destroyed . when the energy in the light changes to another form(like heat)..you can say that light is destroyed. If you meant destroying energy that photons possess, no you can’t destroy it. In the above example the energy is just converted into heating water.

Like other waves, light waves can travel through matter, but light waves are different from water waves and sound waves. In empty space, light travels at a speed of about 300,000 km/s. Light travels so fast that light emitted from the Sun travels 150 million km to Earth in only about eight and a half minutes.

As light travels away from a galaxy, the Universe is continually expanding, meaning that the distance the light needs to travel is continually increasing as well. As space stretches out underneath a beam of light, its wavelength increases, and its energy decreases.

Sound and light are similar in that both are forms of energy that travel in waves. They both have properties of wavelength, freqency and amplitude. Here are some differences: Sound can only travel through a medium (substance) while light can travel through empty space.

Sound travels in waves and exists only within a medium. Light also travels in a wavelike manner but light has electric and magnetic properties and accordingly it is an electromagnetic (EM) wave. Sound travels at 343 m/s in air and light travels through all mediums at almost m/s.