| controlled substance | a drug or chemical substance whose possession and use are controlled by law |
high pitch
high frequency | a pitch that is perceived as above other pitches |
low pitch
low frequency | a pitch that is perceived as below other pitches |
| frequency response | (electronics) a curve representing the output-to-input ratio of a transducer as a function of frequency |
audio
audio frequency | an audible acoustic wave frequency |
| radio frequency | an electromagnetic wave frequency between audio and infrared |
infrared
infrared frequency | the infrared region of the electromagnetic spectrum, electromagnetic wave frequencies below the visible range, they could sense radiation in the infrared |
extremely low frequency
ELF | below kilohertz |
very low frequency
VLF | tokilohertz |
| low frequency LF | to kilohertz |
medium frequency
MF | to kilohertz |
| high frequency HF | tomegahertz |
very high frequency
VHF | to megahertz |
ultrahigh frequency
UHF | to megahertz |
superhigh frequency
SHF | togigahertz |
extremely high frequency
EHF | to gigahertz |
fundamental
fundamental frequency
first harmonic | the lowest tone of a harmonic series |
| frequency distribution | a distribution of observed frequencies of occurrence of the values of a variable |
frequency band
waveband | a band of adjacent radio frequencies (e.g., assigned for transmitting radio or television signals) |
frequency modulation
FM | modulation of the frequency of the (radio) carrier wave |
radio spectrum
radio-frequency spectrum | the entire spectrum of electromagnetic frequencies used for communications, includes frequencies used for radio and radar and television |
frequency
absolute frequency | the number of observations in a given statistical category |
frequency
relative frequency | the ratio of the number of observations in a statistical category to the total number of observations |
frequency
frequence
oftenness | the number of occurrences within a given time period, the frequency of modulation wascycles per second, the frequency of his seizures increased as he grew older |
| sampling frequency | (telecommunication) the frequency of sampling a continuously varying signal |
| Nyquist frequency | (telecommunication) twice the maximum frequency occurring in the transmitted signal |
automated
machine-controlled
machine-driven | operated by automation, an automated stoker |
collectivist
collectivistic
collectivized
collectivised
state-controlled | subscribing to the socialistic doctrine of ownership by the people collectively |
| controlled | restrained or managed or kept within certain bounds, controlled emotions, the controlled release of water from reservoirs |
| price-controlled | having the price regulated or controlled by government |
| radio-controlled | operated and guided by radio, a radio-controlled airplane |
unmanned
remote-controlled | lacking a crew, an unmanned satellite to Mars |