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 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 >.

The energy received by the `` pill '' causes the resonant circuit to `` ring '' on after the burst and this `` ringing '' takes place at the resonant frequency of the `` pill ''.

Moseley, after discussions with Bohr who was at the same lab ( and who had used Van den Broek's hypothesis in his Bohr model of the atom ), decided to test Van den Broek and Bohr's hypothesis directly, by seeing if spectral lines emitted from excited atoms fit the Bohr theory's demand that the frequency of the spectral lines be proportional to a measure of the square of Z.

In the frequency domain, amplitude modulation produces a signal with power concentrated at the carrier frequency and two adjacent sidebands.

The acoustic equations for the conservation of momentum and the conservation of mass are often expressed in time harmonic form ( at fixed frequency ).

Studies published in 2004 and 2007 show the combined frequency of M7a and N9b to be at least 28 % in Okinawans ( 7 / 50 M7a1, 6 / 50 M7a ( xM7a1 ), 1 / 50 N9b ), 17. 6 % in Ainus ( 8 / 51 M7a ( xM7a1 ), 1 / 51 N9b ), and 10 % ( 97 / 1312 M7a ( xM7a1 ), 1 / 1312 M7a1, 28 / 1312 N9b ) to 17 % ( 15 / 100 M7a1, 2 / 100 M7a ( xM7a1 )) in mainstream Japanese.

A channel actually consists of two signals: the picture information is transmitted using amplitude modulation on one frequency, and the sound is transmitted with frequency modulation at a frequency at a fixed offset ( typically 4. 5 to 6 MHz ) from the picture signal.

At this point the IF signal consists of a video carrier wave at one frequency and the sound carrier at a fixed offset.

A demodulator recovers the video signal and sound as an FM signal at the offset frequency ( this is known as intercarrier sound ).

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

Modern switching amplifiers need steep low pass filtering at the output to get rid of high frequency switching noise and harmonics.

Many amplifiers are ultimately slew rate limited ( typically by the impedance of a drive current having to overcome capacitive effects at some point in the circuit ), which sometimes limits the full power bandwidth to frequencies well below the amplifier's small-signal frequency response.

* BABIP — Batting average on balls in play: frequency at which a batter reaches a base after putting the ball in the field of play.

For example, a 3 kHz band can carry a telephone conversation whether that band is at baseband ( as in your POTS telephone line ) or modulated to some higher frequency.

The senses in each counterpart bear the impression only of phenomena that share its own frequency, whereas those upon all other frequencies are invisible, inaudible and intactible to them.

In this, some base signal ( e. g., a sinusoidal carrier wave ) has one of its properties modulated: amplitude modulation involves altering the amplitude of a sinusoidal voltage waveform by the source information, frequency modulation changes the frequency.

Once the operator took his finger off, the player would speed up until its tachometer was back in phase with the master, and as this happened, the phasing effect would appear to slide up the frequency spectrum.

Analog ( or analogue ) television is the analog transmission that involves the broadcasting of encoded analog audio and analog video signal: one in which the information to be transmitted, the brightness and colors of the points in the image and the sound waves of the audio signal are represented by continuous variations of some aspect of the signal ; its amplitude, frequency or phase.

It is a mathematical tool for finding repeating patterns, such as the presence of a periodic signal which has been buried under noise, or identifying the missing fundamental frequency in a signal implied by its harmonic frequencies.

However, a common and well-accepted metric is the half power points ( i. e. frequency where the power goes down by half its peak value ) on the output vs. frequency curve.

In case of a low-pass filter or baseband signal, the bandwidth is equal to its upper cutoff frequency.

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.

This is the bandwidth of a device divided by its center frequency.

The plant occurs as a rare casual in the British Isles, mainly in southern England, but the frequency of its occurrence has declined greatly.

The station was later sold to RNC Media, but instead of renewing its license the CRTC issued RNC a license to launch a new radio station on the same frequency.

One clear benefit of the ' late arrival ' of the channel was that its frequency allocations at each transmitter had already been arranged in the early 1960s, when the launch of an ITV2 was highly anticipated.

At the subscriber's residence, either the subscriber's television or a set-top box provided by the cable company translates the desired channel back to its original frequency ( baseband ), and it is displayed on the screen.

However, the rapid growth of the world's population and its increased concentration often in hazardous environments has escalated both the frequency and severity of natural disasters.

The Nyquist – Shannon sampling theorem states that a signal can be exactly reconstructed from its samples if the sampling frequency is greater than twice the highest frequency of the signal ; but requires an infinite number of samples.