Yes we can as Alexander has mentioned. I saw the attached video demonstrating it. Inventor Woody Norris has developed a revolutionary technology called Hyper Sonic Sound that can direct sound the way a laser directs light. In the sound beam's direct line, you hear the audio signal as if through headphones, regardless of background noise.
What is the difference between directional sound and unsourced sound?
Directional sound is a technology that concentrates acoustic energy into a narrow beam so that it can be projected to a discrete area, much as a spotlight focuses light. Focused in this manner, sound waves behave in a manner somewhat resembling the coherence of light waves in a laser. Additionally, can normal speakers produce ultrasound? No.
Can we reflect sound in a different direction?
Mar 22, 2022 · "Directed" audio sounds like it's Researchers have developed technology that can project a beam of sound so narrow that only one person can hear it. Tuesday, March 22 2022
What is directiondirectional sound?
Directional Sound refers to the notion of using various devices to create fields of sound which spread less than most traditional loudspeakers. Several techniques are available to accomplish this, and each has its benefits and drawbacks. Ultimately, choosing a directional sound device depends greatly on the environment in which it is deployed as well as the content that will be …
How do I choose the best directional sound device?
Jul 23, 2012 · There are at least three ways to concentrate sound waves: 1. Parabolic concentrator (mentioned above by curl) 2. Parametric beamforming 3. Acoustic lenses Number 1. Above is a straightforward method to concentrate sound, either to gather sound energy from a distant source and concentrate it at the acoustic focal point, or the reverse.
Is sound directional?
Sound waves are routed in one direction only – always contrary to the direction of the air flow,” says Alù.Jan 31, 2014
Can sound be aimed?
A sound signal can be aimed so that only a particular passer-by, or somebody very close, can hear it. In commercial applications, it can target sound to a single person without the peripheral sound and related noise of a loudspeaker.
How do you make sound directional?
0:538:58How To Make Location Based Directional Audio | Sound CueYouTubeStart of suggested clipEnd of suggested clipSo it's now a sound cue what we're gonna hear is you'll see that i place it in the bottom leftMoreSo it's now a sound cue what we're gonna hear is you'll see that i place it in the bottom left corner. And you can hear it in your left ear now and if i to look to the right over here on my right.
Can sound be concentrated?
On the general level, you focus sound the same way you focus light -- either by reflecting it from a parabolic surface, or letting it pass through an acoustic lens. An acoustic lens is just like an optical lens in that it consists of a material with a different propagation speed of sound, with varying thickness.Dec 1, 2010
Can speakers play ultrasonic?
No. "Active" speakers with their own power supply and amplifier will usually have filters in them that roll off above 22kHz. They're not designed to be capable of emitting ultrasound, and the filtering is there to eliminate induced noise from other sources.Feb 20, 2015
What is a sound projection?
1. sound projection - the acoustic phenomenon that gives sound a penetrating quality; "our ukuleles have been designed to have superior sound and projection"; "a prime ingredient of public speaking is projection of the voice"
What is an omnidirectional speaker?
An omnidirectional speaker radiates sound in all directions. Hegeman(1), Bose (2) and Berlant (3) refer to a ideal sound source as being a point source that behaves like a pulsating sphere. This brings visions of some kind balloon or force field having a surface that expands and contracts modulated by an audio signal.
What is an ultrasonic speaker?
Ultrasonic speakers, also commonly referred to as directional or parametric speakers, are a unique variety of speaker which use ultrasonic waves to reproduce sound. The ultrasonic waves have a shorter wavelength, hence this type of speaker produces more directional sound than conventional speaker systems.
How does a sound beam work?
Soundbeam uses ultrasonic sensors to detect movement - big or small - and translates this into sounds. It comes with pre-loaded 'soundsets' that range from tracks which allow the exploration and performance of different genres - blues, classical, to more improvisational soundscapes and other musical ways of playing.
Can sound be directed like a laser?
Inventor Woody Norris has developed a revolutionary technology called Hyper Sonic Sound that can direct sound the way a laser directs light. In the sound beam's direct line, you hear the audio signal as if through headphones, regardless of background noise. Outside the beam, you hear nothing.Mar 6, 2012
Can sound waves be focused like a laser?
Now researchers have found a way to make sound waves that, like light waves in a laser, travel in step. They call it a phaser and it could open up applications as wide-ranging as precision timer circuits and better ultrasound scans.Mar 19, 2013
What is HyperSonic sound?
HyperSonicTM Sound (HSSTM) from American Technology Corporation employs ultrasonics to create audible sound in the air. It works by using harmless ultrasonic tones that we can't hear. These tones use the property of air to create new tones that are within the range of human hearing. The result is audible sound.
How do directional speakers work?
Summary of how directional speakers work 1 The piezoelectric transducers (gray circles) in the directional speaker produce two ultrasonic waves (red and blue), both of which are at frequencies way too high to hear). The transducers pump out the waves in a focused column (like the light in a flashlight beam). The waves are actually modulated (like radio waves) and travel as one wave, but it's simplest to imagine them as two quite separate waves. 2 When the two waves hit something (or someone), they slow down and demodulate, producing a new wave (green) whose frequency is much lower—equal to the difference in frequencies between the two original waves. This is a wave you can hear. 3 When there's no-one standing in the beam, the waves keep on traveling without producing an audible sound wave—so if there's no-one standing in front of the speaker, there's nothing you can hear. 4 People standing outside the beam can't hear anything because (unlike with a conventional loudspeaker) the sound waves are not diverging from the source of sound to reach their ears.
What frequency does ultrasound produce?
By the principle of wave superposition, two ultrasound waves of those frequencies can subtract from one another to produce a third wave with a much lower frequency in the range 200–20,000 Hz —and that's in the frequency range that your ears hear.
What is a loudspeaker?
courtesy of U.S. Army. A conventional loudspeaker is designed to spread sound over a fairly wide area: it has a paper or plastic cone that moves back and forth, pumping sound in a wide arc in front of it.
What device was used during Garner Protests?
Concerns Raised Over Shrill Device New York Police Used During Garner Protests by Colin Moynihan. The New York Times, December 12, 2014. Lawyers object to the use of LRAD for dispersing crowds of protesters.
What happens when sound becomes noise?
But when sound becomes noise, it increases stress and introduces emotional reactions in our lives and relationships. In fact, sound can distract, disorient, frighten, or injure–it is a pressure wave. As such it occurs at a certain frequency.
What is the loudest sound on earth?
Whales produce the loudest low frequency sounds on earth — at around 190 dB (17 to 30 Hz). Close up, the high-intensity calls by blue and fin whales can collapse the lungs and cause death to other living creatures.
How many Hz do teens like?
Make a sound that’s irritating to a person, and you can deter that person from a certain action. Teenagers don’t like sounds around 20,000 Hz and will try to distance themselves from this sound.
What is the meaning of dB in music?
Decibels (dB) is the measurement of the power or intensity of sound . The decibel provides a relative measure of sound intensity. The higher the dB rating, the more the volume sound has. The intensity of a sound wave decreases with increasing distance from the source (inverse square law).
What is Sonic Warfare?
Sonic Warfare. In the ‘Walls of Jericho’ scenario, sonic warfare is used to destructively shatter objects and material. It takes a directed concussive effect to vibrate structures to rubble and infrasonic energy to shatter bones and pulp organs from within. But, it is possible.
What is a LRAD?
The garage inventor for med a company (LRAD) and designed sonic and ultrasonic weapons that can incapacitate, injure, or kill. Law enforcement and the military now use their new long-range acoustic device (LRAD) as a directed beam weapon to control crowds and deter pirates or insurgents from attacking ships at sea.
