By this standard, it is determined that where two stations operating on the same frequency are involved, objectionable interference from station A exists at any point within the service area of station B where station A's signal is of an intensity one-twentieth or more of the strength of station B's signal at that point.

The television system for each country will specify a number of television channels within the UHF or VHF frequency ranges.

Most commonly, bandwidth refers to the 3-dB bandwidth, that is, the frequency range within which the spectral density ( in W / Hz or V < sup > 2 </ sup >/ Hz ) is above half its maximum value ( or the spectral amplitude, in V or V / Hz, is more than 70. 7 % of its maximum ); that is, above − 3 dB relative to the peak.

The 3 dB bandwidth of an electronic filter or communication channel is the part of the system's frequency response that lies within 3 dB of the response at its peak, which in the passband filter case is typically at or near its center frequency, and in the lowpass filter is near 0 hertz.

In calculations of the maximum symbol rate, the Nyquist sampling rate, and maximum bit rate according to the Hartley formula, the bandwidth refers to the frequency range within which the gain is non-zero, or the gain in dB is below a very large value.

Examples of genetic classification include methods based on the relative frequency of different air mass types or locations within synoptic weather disturbances.

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 frequency response may be tailored to, for instance, eliminate unwanted frequency components from an input signal, or to limit an amplifier to signals within a particular band of frequencies.

Calculating the frequency of a repeating event is accomplished by counting the number of times that event occurs within a specific time period, then dividing the count by the length of the time period.

For example, if 71 events occur within 15 seconds the frequency is:

Hail occurs most frequently within continental interiors at mid-latitudes and is less common in the tropics, despite a much higher frequency of thunderstorms than in the midlatitudes.

An MRI scanner is a device in which the patient lies within a large, powerful magnet where the magnetic field is used to align the magnetization of some atomic nuclei in the body, and radio frequency fields to systematically alter the alignment of this magnetization.

This instability is noted not only as a frequency shift from one pulse to the next, but also a frequency shift within an individual transmitted pulse.

In 1941, the problem of frequency instability was solved by coupling (" strapping ") alternate cavities within the magnetron.

Exiting from the windway, the breath is directed against a hard edge ( C ), called the " labium " or " ramp ", which causes the column of air within the resonator tube to oscillate at the desired frequency, determined by the bore length or open tone hole used.

To generate an SSB signal with this method, two versions of the original signal are generated, mutually 90 ° out of phase for any single frequency within the operating bandwidth.

The front end of an SSB receiver is similar to that of an AM or FM receiver, consisting of a superheterodyne RF front end that produces a frequency-shifted version of the radio frequency ( RF ) signal within a standard intermediate frequency ( IF ) band.

Unlike UMTS, CDMA2000 is an evolutionary upgrade to an existing 2G standard, cdmaOne, and is able to operate within the same frequency allocations.

This mutation occurs with the greatest frequency among Scandinavian males: 35 percent in Norway, Denmark and Sweden, and peaking at 40 percent within western Finland.

This is in contrast with vocoders realized using fixed-width filter banks, where spectral peaks can generally only be determined to be within the scope of a given frequency band.

Accordingly, the Commission has recognized that an optimum allocation pattern for one frequency does not necessarily represent the best pattern for other frequencies, and has assigned different frequencies for use by different classes of stations.

Ásatrú communities ( kindreds, hearths, mots ) have different approaches to the frequency of blóts and their means of celebrating them.

Each partial is a sine wave of different frequency and amplitude that swells and decays over time.

The transform preserves stability and maps every point of the frequency response of the continuous-time filter, to a corresponding point in the frequency response of the discrete-time filter, although to a somewhat different frequency, as shown in the Frequency warping section below.

This means that for every feature that one sees in the frequency response of the analog filter, there is a corresponding feature, with identical gain and phase shift, in the frequency response of the digital filter but, perhaps, at a somewhat different frequency.

To avoid confusion, people could take turns speaking ( time division ), speak at different pitches ( frequency division ), or speak in different languages ( code division ).

At the headend, each television channel is translated to a different frequency.

By giving each channel a different frequency " slot " on the cable the separate television signals do not interfere.

The polyphonic organization of different melodies to sound at the same time was still a relatively new invention then, and it is understandable that the mathematical or physical relationships in frequency that give rise to the musical intervals as we hear them, should be foremost among the preoccupations of Medieval musicians.

The DTMF system uses eight different frequency signals transmitted in pairs to represent 16 different numbers, symbols and letters-as detailed below.

This is sometimes referred to as spectral coherence, as it is related to the presence of different frequency components in the wave.

This forced development of a variation of DECT, called DECT 6. 0, using a slightly different frequency range ; the technology is nearly identical, but the frequency difference makes the technology incompatible with systems in other areas, even from the same manufacturer.

Another way to represent results is in DMIPS / MHz, where DMIPS result is further divided by CPU frequency, to allow for easier comparison of CPUs running at different clock rates.

With most IIR transfer functions there are related transfer functions having a frequency response with the same magnitude but a different phase ; in most case the so-called minimum phase transfer function is preferred.

But using different assumptions about the special-relativistic frames ( such as their being earth-fixed, or in free fall ), one can derive different predictions for the gravitational redshift, that is, the way in which the frequency of light shifts as the light propagates through a gravitational field ( cf.

CpG dinucleotides have long been observed to occur with a much lower frequency in the sequence of vertebrate genomes than would be expected due to random chance.

The frequency of CpG dinucleotides in human genomes is 1 % — less than one-quarter of the expected frequency.

The effect of the recording is very open and natural, with the frequency emphasis exactly what you would expect from a live performance.

The frequency used for these experiments is 15 mc. and the transducer is a specially cut crystal with an epoxy lens capable of providing beam diameters smaller than one millimeter.

On the other hand, the temporary reduction in hypothalamic excitability through the injection of a barbiturate into the posterior hypothalamus causes a lessening in frequency and amplitude of cortical strychnine spikes until the hypothalamic excitability is restored.

In addition, the cutoff frequency for input accelerations is approximately proportional to the servo loop gain ; ;

The effect is that the platform returns from an off-level position at a rapid rate until it is nearly level, at which point the platform is controlled by a proportional servo with low enough frequency response so that the noise has little effect on the leveling process.

`` However, evidence that the Axis powers are making significant preparations indicative of such an intention is being reported with increasing frequency from a variety of sources.

We know that the number of radio and television impulses, sound waves, ultra-violet rays, etc., that may occupy the very same space, each solitary upon its own frequency, is infinite.

It is she who decides the time, the place, the surroundings, and the frequency of the sexual act.

The participating institutions each broadcast, in real time, a frequency signal with time codes, which is their estimate of TAI.

People tend to be less cooperative if they perceive that the frequency of helpers in the population is lower.

the relative frequency at bin and is the total area of the histogram.

Contrast this with frequency modulation, in which the frequency is varied, and phase modulation, in which the phase is varied.

The Spectrogram produced by such an instrument is a graphical display of the time varying pressure level and frequency profiles which give a specific acoustic signal its defining character.

The lowest possible energy an electron can take is therefore analogous to the fundamental frequency of a wave on a string.

it was noted by Bohr that the existence of any sort of wave packet implies uncertainty in the wave frequency and wavelength, since a spread of frequencies is needed to create the packet itself.

An equivalent definition is the radius of an unperturbed circular Newtonian orbit about the Sun of a particle having infinitesimal mass, moving with an angular frequency of radians per day ; or that length such that, when used to describe the positions of the objects in the Solar System, the heliocentric gravitational constant ( the product GM < sub >☉</ sub >) is equal to ()< sup > 2 </ sup > AU < sup > 3 </ sup >/ d < sup > 2 </ sup >.