He looked for the source of the noise that had awakened him.

Engine noise is a particularly large component of mobile source noise for vehicles operating at lower speeds, where aerodynamic and tire noise is less significant.

Signal noise is an internal source of random variations in the signal, which is generated by all electronic components.

Shot noise is the dominant source in most receivers.

Since the electron is moving at a certain temperature ( Plank spectrum ) this noise source cannot be further eroded.

In addition, the intentional word play regarding the city of Babel, and the noise of the people's " babbling ," is found in the Hebrew words as easily as in English, and is considered typical of the " Yahwist source.

To recreate speech, the vocoder simply reverses the process, processing a broadband noise source by passing it through a stage that filters the frequency content based on the originally recorded series of numbers.

The Voder consisted of a series of manually-controlled oscillators, filters, and a noise source.

Zodiacal dust around nearby stars is called exozodiacal dust ; it is a potentially important source of noise for directly imaging extrasolar planets.

In atmospheric sounding and noise pollution, ambient noise level ( sometimes called background noise level, reference sound level, or room noise level ) is the background sound pressure level at a given location, normally specified as a reference level to study a new intrusive sound source.

That is, in a directional antenna, the portion of the noise source that the antenna's main and side lobes intersect contribute proportionally.

With analog filters, every component is a source of thermal noise ( such as Johnson noise ), so as the filter complexity grows, so does the noise.

In telecommunications, effective input noise temperature is the source noise temperature in a two-port network or amplifier that will result in the same output noise power, when connected to a noise-free network or amplifier, as that of the actual network or amplifier connected to a noise-free source.

You can also see that the greater the proximity of the pool to your main living quarters, the greater the chance for violation of family privacy, annoying noise and the let's-make-your-house-our-club attitude.

It's no use pretending that all conditioners are quiet, but the noise they produce can be kept to a minimum.

Watch people flock to amusement houses, cocktail lounges, and night clubs that advertise continuous entertainment, which means an endless flow of noise and frivolity by paid entertainers who are supposed to perform in those incredible ways which are designed to give men a few hours of dubious relaxation -- watch them and you can tell that many of them are running away from something.

In practice an analog signal is subject to electronic noise and distortion introduced by communication channels and signal processing operations, which can progressively degrade the signal-to-noise ratio.

Converting an analog signal to digital form introduces a constant low-level noise called quantization noise into the signal which determines the noise floor, but once in digital form the signal can in general be processed or transmitted without introducing additional noise or distortion.

Even if the resolution of an analog signal is higher than a comparable digital signal, the difference can be overshadowed by the noise in the signal.

The application of acoustics can be seen in almost all aspects of modern society with the most obvious being the audio and noise control industries.

This noise can be avoided by modulation of the signal at a higher frequency, for example through the use of a lock-in amplifier.

Many of these noise sources are narrow bandwidth and therefore can be avoided.

On some occasions a patient with a brain AVM may become aware of the noise, which can compromise hearing and interfere with sleep in addition to causing psychological distress.

To say that a system has a certain bandwidth means that the system can process signals of that bandwidth, or that the system reduces the bandwidth of a white noise input to that bandwidth.

By having two different temporal positive feedback loops or “ dual-time switches ” allows for ( a ) increased regulation: two switches that have independent changeable activation and deactivation times ; and ( b ) linked feedback loops on multiple timescales can filter noise.

Whilst distractions like background noise, poor lighting or an environment which is too hot or cold can all affect people's morale and concentration, which in turn interfere with effective communication.

Some small sense of the noise and power of a cavalry charge can be gained from the 1970 film Waterloo, which featured some 2000 cavalrymen, some of them cossacks.

The resulting ' music ' can be more like noise, or can sound quite familiar and pleasant.

CDMA is analogous to the last example where people speaking the same language can understand each other, but other languages are perceived as noise and rejected.

Another writer says, " My own position can be summarized in the following terms: just as music is whatever people choose to recognize as such, noise is whatever is recognized as disturbing, unpleasant, or both " ( Nattiez 1990, 47 – 48 ).

When using many effects, unwanted noise and hum can be introduced into the sound.

Today the consensus regarding FM is that narrow band FM is not so advantageous in terms of noise reduction, but wide band FM can bring great improvement in signal to noise ratio if the signal is stronger than a certain threshold.

Just inside the perforations, on the left side of the image, is the analog optical soundtrack, with two channels encoded using Dolby Analog SR | Dolby SR noise reduction that can be dematrixed into four channels using Dolby Pro Logic.

If high accuracy is required in preflight leveling, it is usually necessary to integrate or doubly integrate the accelerometer outputs ( this also minimizes the noise problem ).

* Noise mitigation, also known as noise abatement

In addition, as the same algorithm is used for background correction and elimination of lamp noise, the background corrected signals show a much better signal-to-noise ratio compared to the uncorrected signals, which is also in contrast to LS AAS.

Noise is an undesirable but inevitable product of the electronic devices and components ; also, much noise results from intentional economies of manufacture and design time.

The flame also burns without noise, unlike the Bunsen or Teclu burners.

Shannon and Weaver also recognized that often there is static that interferes with one listening to a telephone conversation, which they deemed noise.

Recurved limbs also put greater strain on the materials used to make the bow, and they may make more noise with the shot.

LPC may also be thought of as a basic perceptual coding technique ; reconstruction of an audio signal using a linear predictor shapes the coder's quantization noise into the spectrum of the target signal, partially masking it.

Their boots also made too much noise, therefore Carson and Beale removed them and tucked them under their belts.

In tone, the poem juxtaposes quiet with noise ... Action presents its contrasts also ...

This ignores the fact that the bar could simply lower its noise levels, and / or install soundproofing structural elements to keep the noise from excessively transmitting onto others ' properties, but this is also a false choice because it ignores the fact that the noise could be emanating from the patrons outside the bar.

Without efforts to damp this noise, it can approach 130 decibels ( dB ) with strong fields ( see also the subsection on acoustic noise ).

Roof bolters are among the loudest machines, but auger miners, bulldozers, continuous mining machines, front end loaders, and shuttle cars and trucks are also among those machines most responsible for excessive noise in mine work.

Arrests may also be made for violating a noise ordinance, for disorderly conduct, and even for operating a “ blind pig .”

This reduces the effect of background noise, including clicks or pops, and also conserves the amount of physical space needed for each groove, by reducing the size of the low-frequency undulations.

There will also be flicker noise caused by electrons transit through amplification devices, which is reduced using heterodyne amplification.

Signal can also be split among multiple filters for pulse-Doppler signal processing, which reduces the noise floor by the number of filters.

This version of the screwdriver also appears, although never officially announced, to have a flashlight setting, as the Doctor is seen to have it emitting a continuous glow while not uttering the classic sonic noise.

Humans are also capable of generating something approximating white noise by making a “ sshh ” sound.

Seismometers also record signals from non-earthquake sources ranging from explosions ( nuclear and chemical ), to local noise from wind or anthropogenic activities, to incessant signals generated at the ocean floor and coasts induced by ocean waves ( the global microseism ), to cryospheric events associated with large icebergs and glaciers.

The acoustic noise problem is actually more severe in the helicopter environment, not only because of the high noise levels but also because the helicopter pilot, in general, does not wear a facemask, which would reduce acoustic noise in the microphone.