«As a DJ, to me, it sounds like if you were to low - pass it (keeping
the sound at low frequencies), I bet you're much more likely to hear Laurel,» Vaughn explains.
Ship propellers and motors, for instance, produce
sound at low frequencies, as does seismic activity.
Not exact matches
The doctor will play
sounds at different
frequencies, from really high to really
low.
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.
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.
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.
Researchers
at the University of Southampton are investigating the scope for neutralising
low -
frequency bass notes by generating «antiphase»
sound with an ordinary hi - fi system.
«There's so much
sound energy
at low frequencies that conventional, passive
sound insulation within walls doesn't work,» says Fahy.
The attack on Mr. Strode is cut fast and close — without any blood — but the
sound of Michael's strike is mostly
at the
low - end as opposed to the higher
frequency sound of a knife blade.
The Active Noise Cancellation (ANC) system identifies and reduces unwanted
low -
frequency sounds by using strategically placed microphones within the cabin and using a
sound wave
at the same amplitude through noise cancellation speakers to mask unwanted
sounds.
Paradoxical as it may
sound, a quad - core processor actually runs
at a
lower frequency and uses less power than a dual - core equivalent.
When batteries run
low, the devices often emit alert or alarm
sounds at frequencies that can be painful and frightening to many pets.
It's rigged up in a do - it - yourself manner so
sound waves oscillate from the highest to
lowest frequencies perceptible to the human ear through a circle of the upturned speakers, each piled up with crystals that reverberate
at various
frequencies.
Curious that Danes should complain about precisely the same effects from the incessant
low -
frequency noise and infra -
sound generated by giant fans that Vestas» victims
at Macarthur in Victoria do?
Called Sons de Mar («
sounds of the sea»), you can compare a blue whale's call (measuring 188 decibels and heard
at hundreds of kilometres) with the incessant
sounds of industrial shipping (180 db heard
at hundreds of kilometres) and
low -
frequency sonar used by the military (240 db heard
at hundreds of kilometres).
Infrasound is
sound of such a
low frequency as to be inaudible to humans; although
at high volumes it can be felt.
The
frequency response is a claimed 80Hz - 20kHz, though the speaker cuts off in the
low end sharply
at what
sounds like a bit before that 80Hz mark.
Nearly all modern TV and movie soundtracks are recorded in surround
sound, so most soundbars are equipped to decode
at least Dolby Digital and play back discrete left, right, and center channels, plus
low -
frequency effects (LFE).
Angling them sideways ensures that the metallic speaker column doesn't block their
sound path, and since our ears are very poor
at discerning the directionality of
lower frequencies, it doesn't matter that they are side - firing.
The guitar strums sometimes
sound brighter than they do on other pairs, and Callahan's vocals sometimes
sound more crisp — this
sound signature, even with the bass
at low or medium levels, is a
lows - and mids - forward affair, with a little less crispness and brightness in the higher
frequencies.
Pump the volume all the way up, and you'll find the treble / high -
frequencies are too harsh, while bass loses its effectiveness
at such volume; the
low - end also vanishes a bit when you turn the speaker down too
low, too, so you definitely have to find a volume sweetspot somewhere in the middle for the most balanced
sound results.
The loudspeaker
at the back is a quiet one and produces somewhat hollow
sound, with neither a focus on high (treble) nor
low (bass)
frequencies.