While this disturbance is usually small, it is still noticeable to the human ear.

This range is important because its frequencies can be detected by the human ear.

But if set to a frequency outside the human audible range then the ear can't perceive the square wave, only the difference between the speaker being switched on and off.

The perceptual models used to estimate what a human ear can hear are generally somewhat different from those used for music.

The lowest note of a double bass is an E < sub > 1 </ sub > ( on standard four-string basses ) at approximately 41 Hz or a B0 ( when five strings are used ) at approximately 31 Hz, within about an octave above the lowest frequency that the average human ear can perceive as a distinctive pitch.

The latter hypothesis seems the more plausible evolution determinant as the surface area of the head is minute compared to the remainder of the body, thus the energy required in producing long hair for the express purpose of " optical " amplification of UV light reflected from the snow seems counterproductive ( however, it's very likely that the trait was sustained due to a nuanced combination of multiple influences, given that human hunting-skills and ingenuity were such by 50, 000 years ago that said benefits in terms of ' comfort ' could have alternatively been derived from constructing head and ear warmers of fur from prey, etc .).

When a user acquires a lossily compressed file, ( for example, to reduce download time ) the retrieved file can be quite different from the original at the bit level while being indistinguishable to the human ear or eye for most practical purposes.

Flaws caused by lossy compression that are noticeable to the human eye or ear are known as compression artifacts.

Just as the eye perceives colours and the ear sounds, so thinking perceives ideas .” A consistent thread that runs from his earliest philosophical phase through his later spiritual orientation is the goal of demonstrating that there are no essential limits to human knowledge.

Science fiction editors John Clute and Peter Nichols offer a largely favorable appraisal of King, noting his " pungent prose, sharp ear for dialogue, disarmingly laid-back, frank style, along with his passionately fierce denunciation of human stupidity and cruelty ( especially to children ) of which rank him among the more distinguished ' popular ' writers.

( The unwanted components at can be removed by a lowpass filter ( for which an output transducer or the human ear may serve )).

Many animals — such as dogs, cats, dolphins, bats, and mice — have an upper frequency limit that is higher than that of the human ear and thus can hear ultrasound.

The wavelengths of sound frequencies audible to the human ear ( 20 Hz – 20 kHz ) are thus between approximately 17 m and 17 mm, respectively.

In the measurement of loudness, for example, an A-weighting filter is commonly used to emphasize frequencies around 3 – 6 kHz where the human ear is most sensitive, while attenuating very high and very low frequencies to which the ear is insensitive.

When sound film was introduced in 1926, variations in film speed were no longer tolerated as the human ear is more sensitive to changes in audio frequency.

The untrained human ear typically does not perceive harmonics as separate notes.

In Europe, it is preferable to apply a ITU-R BS. 468 weighed curve, which is intended to accentuate what is most audible to the human ear, contributing to a more accurate measurement.

Similarly, the audio frequency range is limited to those sounds most clearly heard by the human ear.

In short, audio illusions highlight areas where the human ear and brain, as organic, makeshift tools, differ from perfect audio receptors ( for better or for worse ).

But Mach also made many contributions to psychology and physiology, including his anticipation of gestalt phenomena, his discovery of the oblique effect and of Mach bands, an inhibition-influenced type of visual illusion, and especially his discovery of a non-acoustic function of the inner ear which helps control human balance.

The human inner ear develops during week 4 of embryonic development from the auditory placode, a thickening of the ectoderm which gives rise to the bipolar neurons of the cochlear and vestibular ganglions.

Research by NASA in the 1970s showed that this effect occurs as a result of thermal expansion of parts of the human ear around the cochlea, even at low power density.

* Earwax-found in the human ear.

The technology used head-related transfer functions ( HRTF ), which the human ear interprets as spatial cues indicating the location of a particular sound source.

There are certainly large areas of understanding in the human sciences which in themselves and even without political invention can help to dispel our present fears.

Underlying these conceptions of mimesis are certain presuppositions concerning the nature of primary human experience which require some exposition before the main argument can proceed.

Such genuine human leadership the proprietorship can offer, corporations cannot.

Proprietorships can establish a meaningful identity, representing a human personality, and thus establish sincere relationships with customers and community.

As a Humanist, Dr. Huxley interests himself in the possibilities of human development, and one thing we can say about this suggestion, which comes from a leading zoologist, is that, so far as he is concerned, the scientific outlook places no rigid limitation upon the idea of future human evolution.

He was a learned and brilliant man, one of the best jurists in Europe and with flashes of penetrating insight, and yet in his dealings with other people, particularly when he tried to be ingratiating, he was capable of an abysmal stupidity that can have come only from a complete incomprehension of human nature and human motives.

Writers of this class of science fiction have clearly in mind the assumptions that man can master the principles of this cause-and-effect universe and that such mastery will necessarily better the human lot.

If man is actually the product of his environment and if science can discover the laws of human nature and the ways in which environment determines what people do, then someone -- a someone probably standing outside traditional systems of values -- can turn around and develop completely efficient means for controlling people.

What we must have, if the United Nations is to survive, is as nonpolitical, nonpartisan an organization at the top as human beings can make it, subject to no single nation's direction and subservient to no single nation's ambition.

In still others which are barely on the threshold of the transition into modernity, the decade can bring significant progress in launching the slow process of developing their human resources and their basic services to the point where an expanded range of developmental activities is possible.

Anatomically, the horse lung appears to be remarkably like that of man, insofar as this can be ascertained from comparison of our findings in the horse with those of others ( Birnbaum, '54 ) in the human being.

Progress is impeded by psychological inhibitions to effective action among those in power and by a failure on their part to understand how local resources, human and material, can be mobilized to achieve the national goals of modernization already symbolically accepted.

By clarifying fundamental premises in the social sciences, and defining the logical problems emergent at the borderlands of each new scientific discipline, philosophy can offer the sort of distinction that can accelerate growth in human understanding.

The thing can be made to look like the cluttered attic of a large and vigorous family -- a motley jumble of discarded objects, some outworn and some that were never useful, some once whole and bright but now chipped and tarnished, some odd pieces whose history no one remembers, here and there a gem, everything fascinating because it suggests some part of the human condition -- the whole adding up to nothing more than a glimpse into the disorderly history of the makers and users.

Pond water can be filtered for human use, but most part-time farmers would not want to go to so much trouble.

I speak of `` the largest possible measure '' because any person who supposes that these conditions can be universally and perfectly achieved -- ever -- reckons without the inherent imperfectability of himself and his fellow human beings, and is therefore a dangerous man to have around.

Most members of the U.S. Senate, because they are human, like to eat as high on the hog as they can.

Each man can identify himself with the history and the death of Jesus Christ because Jesus Christ has identified himself with human history and human death, coming as the head of a new humanity.

The statement also points to a classic paradox: The more men turn toward God, who is not only in himself the paradigm of all unity but also the only ground on which human unity can ultimately be established, the more men splinter into groups and set themselves apart from one another.

That is why it is so very important that ethical analysis keep clear the problem of decision as to `` permitted '' effects, and not draw back in fright from any conceivable contingency or suffer paralysis of action before possibilities or probabilities unrelated, or not directly morally related, to what we can and may and must do as long as human history endures.