frequency warping definition, frequency warping meaning | English dictionary

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frequency  


      n   pl   , -cies  
1    the state of being frequent; frequent occurrence  
2    the number of times that an event occurs within a given period; rate of recurrence  
3      (Physics)   the number of times that a periodic function or vibration repeats itself in a specified time, often 1 second. It is usually measured in hertz.,   (Symbol)    <Gnu>   f  
4      (Statistics)  
a    the number of individuals in a class (absolute frequency)  
b    the ratio of this number to the total number of individuals under survey (relative frequency)  
5      (Ecology)  
a    the number of individuals of a species within a given area  
b    the percentage of quadrats that contains individuals of a species,   (Also called (for senses 1, 2))    frequence  
     (C16: from Latin frequentia a large gathering, from frequens numerous, crowded)  


angular frequency  
      n     (Physics)   the frequency of a periodic process, wave system, etc., expressed in radians per second  
audio frequency  
      n   a frequency in the range 20 hertz to 20000 hertz. A sound wave of this frequency would be audible to the human ear  
automatic frequency control  
      n   a system in a radio or television receiver by which the tuning of an incoming signal is accurately maintained,   (Abbrev.)    AFC  
expected frequency  
      n     (Statistics)   the number of occasions on which an event may be presumed to occur on average in a given number of trials  
extremely high frequency  
      n   a radio frequency between 30000 and 300000 megahertz,   (Abbrev.)    EHF  
extremely low frequency  
      n   a radio frequency or radio-frequency band below 3 kilohertz,   (Abbrev.)    ELF  
forcing frequency  
      n     (Physics)   the frequency of an oscillating force applied to a system  
   Compare       natural frequency  
frequency band  
      n   a continuous range of frequencies, esp. in the radio spectrum, between two limiting frequencies  
frequency distribution  
      n     (Statistics)   the function of the distribution of a sample corresponding to the probability density function of the underlying population and tending to it as the sample size increases, the set of relative frequencies of sample points falling within given intervals of the range of the random variable  
frequency-division multiplex  
      n      See       multiplex       1  
frequency modulation  
      n   a method of transmitting information using a radio-frequency carrier wave. The frequency of the carrier wave is varied in accordance with the amplitude and polarity of the input signal, the amplitude of the carrier remaining unchanged,   (Abbrev.)    FM      Compare       amplitude modulation  
gene frequency  
      n   the frequency of occurrence of a particular gene in a population in relation to the frequency of its alleles  
high frequency  
      n   a radio-frequency band or radio frequency lying between 30 and 3 megahertz,   (Abbrev.)    HF  
intermediate frequency  
      n     (Electronics)   the frequency to which the signal carrier frequency is changed in a superheterodyne receiver and at which most of the amplification takes place  
low frequency  
      n   a radio-frequency band or a frequency lying between 300 and 30 kilohertz,   (Abbrev.)    LF  
medium frequency  
      n   a radio-frequency band or radio frequency lying between 3000 and 300 kilohertz,   (Abbrev.)    MF  
natural frequency  
      n     (Physics)   the frequency at which a system vibrates when set in free vibration  
   Compare       forcing frequency  
radio frequency  
      n  
1   
a    a frequency or band of frequencies that lie in the range 10 kilohertz to 300000 megahertz and can be used for radio communications and broadcasting,   (Abbrevs.)    rf, RF      See also       frequency band  
b    (as modifier)  
a radio-frequency amplifier     
2    the frequency transmitted by a particular radio station  
relative frequency  
      n  
a    the ratio of the actual number of favourable events to the total possible number of events; often taken as an estimate of probability  
b    the proportion of the range of a random variable taking a given value or lying in a given interval  
spatial frequency  
      n     (Television)   the measure of fine detail in an optical image in terms of cycles per millimetre  
superhigh frequency  
      n   a radio-frequency band or radio frequency lying between 30000 and 3000 megahertz,   (Abbrev.)    SHF  
ultrahigh frequency  
      n   a radio-frequency band or radio frequency lying between 3000 and 300 megahertz,   (Abbrev.)    UHF  
very high frequency  
      n   a radio-frequency band or radio frequency lying between 30 and 300 megahertz,   (Abbrev.)    VHF  
very low frequency  
      n   a radio-frequency band or radio frequency lying between 3 and 30 kilohertz,   (Abbrev.)    VLF  
video frequency  
      n   the frequency of a signal conveying the image and synchronizing pulses in a television broadcasting system. It lies in the range from about 50 hertz to 8 megahertz  
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"Collins English Dictionary 5th Edition first published in 2000 © HarperCollins Publishers 1979, 1986, 1991, 1994, 1998, 2000 and Collins A-Z Thesaurus 1st edition first published in 1995 © HarperCollins Publishers 1995"