Sounds at that frequency can travel long distances — useful for night - time communications.
Dolphins can produce
sound at frequencies up to 200 kilohertz — around 10 times as high as the highest pitch we can hear — and can also shift a signal's pitch or stretch it out over a long period of time.
Sound at that frequency is typically inaccessible.
To separate the speech of multiple talkers or to recognize one person's speech, computers represent the sound signal by its spectrum — the energy in
the sound at each frequency.
When batteries run low, the devices often emit alert or alarm
sounds at frequencies that can be painful and frightening to many pets.
Ultrasound refers to
sounds at frequencies above 20 kilohertz.
Bi-laminate polymer cones, silk dome tweeters and premium crossovers all contained within a high - efficiency design produces detailed, natural
sound at all frequencies without fatigue, even at the highest volumes.
Not exact matches
The Marpac Dohm
Sound Conditioner creates the soothing sound of rushing air, also known as «white noise,» which has been proven to effectively block noises at a broad range of frequen
Sound Conditioner creates the soothing
sound of rushing air, also known as «white noise,» which has been proven to effectively block noises at a broad range of frequen
sound of rushing air, also known as «white noise,» which has been proven to effectively block noises
at a broad range of
frequencies.
White noise acts as a mask because you will be hearing
sounds on every
frequency at once, making a sudden additional
sounds seem much quieter or unnoticeable.
The doctor will play
sounds at different
frequencies, from really high to really low.
Ultrasound is a common test during pregnancy that uses high
frequency sound waves to look
at the anatomy and structures of the developing baby.
At a scientific level, pitch is the
frequency of
sound.
The level of energy exposure to organ tissues transforms into heat energy, in addition to
sound waves
at varying
frequency may lead to unseen disruptions in normal activities and functions.
Install the matching set in your doors to replace or upgrade the factory models and start enjoying sharper
sound at a superior
frequency.
By playing notes through the vessel
at many
frequencies, the team determined the speed of
sound in the argon, and the energy of its atoms.
Ship propellers and motors, for instance, produce
sound at low
frequencies, as does seismic activity.
The researchers used the state - of - the - art nanofabrication technology to make arrays of electrodes with a width of only 100 nanometers (0.00001 centimeters) to excite
sound waves
at an unprecedented high
frequency that is higher than 10 GHz, the
frequency used for satellite communications.
«What's remarkable is that
at this high
frequency, the wavelength of the
sound is even shorter than the wavelength of light.
She says it may be better suited to indoor use, such as in a factory with machines that emit
sounds at different
frequencies.
What should be a wide blue swathe — good hearing across all volume levels and
sound frequencies — narrows sharply, permanently,
at one end.
The air sacs acted like bass drums, resonating
at low
frequencies, and causing vowel
sounds to merge; Lucy's baby would have had a greatly reduced vocabulary.
When the fluorescent molecules are excited, a sphere rings with light of specific wavelengths, just as an organ pipe rings with
sound at a fundamental
frequency and its overtones.
The resulting saser can build up an intense, pure
sound wave
at a specific
frequency in the terahertz range (far, far above the limit of human hearing) for a few billionths of a second.
Ultrasound waves are produced by firing
sound waves
at a glass surface or «lens» to create high -
frequency vibrations.
According to Ingo Titze, director of the National Center for Voice and Speech
at the University of Utah, vocal cords are able to produce a wide range of
sound frequencies because of the larynx's ability to stretch vocal cords and the cords» molecular composition.
Within 30 days, the electrodes began to pick up impulses whenever
sounds at high
frequencies (to the fish) were played over the loudspeaker.
Infrasound, sometimes called low -
frequency sound, is
sound waves that occur
at frequencies lower than the limit of human hearing.
It
sounds like a crazy way to improve your health — spend some time on a platform that vibrates
at about the same
frequency as the lowest string on a double bass.
Echography with microbubbles uses the fact that the bubbles will vibrate in the blood
at the same
frequency as the
sound produced by the echoscanner, as well as
at twice that
frequency; the so - called second harmonic.
The research shows that when the liquid is ultra-thin —
at nano and sub-micro depths — it flows away from the high -
frequency sound waves.
However, when Dayeh looked
at the different
sound frequency bands, he saw that the images cleared up
at higher
frequencies.
To figure out which
frequency of ultrasound would be most efficient for water purification, the scientists looked
at another process related to cavitation called sonoluminescence, in which water bubbles bombarded with
sound actually emit light.
But over time we start to home in on the
sounds of our native language, in effect «tuning» our ears to a narrow set of
frequencies,
at the expense of others.
So the team added another capacitor to their design, and made it vibrate using
sound waves
at a
frequency of 1 gigahertz.
By looking
at the responses of closely related crickets, the scientists found the most likely origin for the female vibrational signal was a startle reflex seen in other crickets in response to loud high
frequency sounds.
Next, they played high -
frequency sounds at different amplitudes and carried out brain scans to pinpoint which brain regions were most responsive to loud noises.
If the
sound is loud enough and
at the right
frequency, the pressure
at the trough of the wave will be so low that the fluid will boil, producing microscopic bubbles.
The
sound wave originates from the vibrating object, such as a vocal chord, and travels through the medium (such as air) causing all of the air particles to vibrate
at the
frequency of the vocal chord.
One strategy is to maximize their
sound output
at frequencies above 2,000 Hz.
For instance, two
sounds that start
at the same instant in time probably come from a single person, even if they involve several different
frequency bands.
The
sound,
at a
frequency of about 70 hertz, was picked up by receivers across the world.
The chip, unveiled in June, will allow radios to simultaneously listen to a wide range of
frequencies — spanning all radio and television broadcasts, along with all cell phone traffic — the way that ears listen to and analyze many
sound frequencies at once.
Harmonics that fall
at or near these resonance
frequencies are most efficiently radiated as
sound.
At such high
frequencies, the wavelength of the
sound becomes short enough that it can be guided along the surface of a microchip.
Because of the structure of speech, however, the louder of two
sounds at a given
frequency typically has significantly more power than the quieter
sound.
This is because an orchestra is typically loudest around 500 Hz, with the
sound level dropping off quickly
at higher
frequencies.
The folds vibrate
at a fundamental
frequency, fo, which determines the pitch of the
sound.
To see how it's done, a team of physicists led by Alex Tarnopolsky and Joe Wolfe
at the University of New South Wales in Sydney introduced a synthesised mix of many
sound frequencies into players» mouths while they played the didgeridoo.
This detects the
sound of a mosquito's wings from three radar - like dishes around the room, then transmits an amplified shriek
at the critical
frequency of the wing, breaking up the insect in mid-flight.
Christoph Kayser, a research scientist
at the Max Planck Institute for Biological Cybernetics in Tübingen, Germany, says that his team mapped the auditory cortex in monkeys, segmenting it into 11 fields based on the
frequency of
sound each section processes.