frequency

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amplitudenoun

/ˈæm.plɪ.tud/

The maximum absolute value of the vertical component of a curve or function, especially one that is periodic.

"The amplitude of the child's swing showed how high it went on each push. "

stilladverb

/stɪl/

Always; invariably; constantly; continuously.

"My younger brother is still very energetic, even after a long day at school. "

ultrasoundsnoun

/ˈʌltrəsaʊndz/

Sound with a frequency greater than the upper limit of human hearing, which is approximately 20 kilohertz.

"The doctor used ultrasounds to check the baby's development in the womb. "

superhetsnoun

/ˈsuːpərˌhɛts/

Superheterodyne receiver.

"My grandfather, a ham radio enthusiast, still prefers working with superhets because of their superior sensitivity to weak signals compared to newer receiver designs. "

subcarriersnoun

/sʌbˈkæriərz/

A separate signal carried on a main radio transmission, often carrying additional information such as voice or data.

"The FM radio station uses subcarriers to broadcast traffic updates and weather information in addition to its regular music programming. "

loweradjective

/ˈləʊə/ /ˈloʊɚ/ /ˈlaʊ.ə/ /ˈlaʊ.ɚ/

(acoustics) Grave in pitch, due to being produced by relatively slow vibrations (wave oscillations); flat.

"Generally, European men have lower voices than their Indian counterparts."

short wavenoun

/ˈʃɔːrt ˌweɪv/

An electromagnetic wave having a wavelength between approximately 10 and 100 meters, corresponding to frequencies between 3 and 30 MHz.

"Shortwaves are longer than microwaves."

lowadjective

/ləʊ/ /loʊ/ /laʊ/

(acoustics) Grave in pitch, due to being produced by relatively slow vibrations (wave oscillations); flat.

"Generally, European men have lower voices than their Indian counterparts."

baudnoun

/bɔːd/

A unit of data transmission symbol rate; the number of signalling events per second.

"The old modem transmitted data at 300 baud, meaning it sent 300 signals per second. "

bandsnoun

/bændz/

A part of the electromagnetic spectrum.

"Different wireless devices, like phones and Wi-Fi routers, operate on different bands of the electromagnetic spectrum to avoid interference. "

habituallyadverb

/həˈbɪtʃuəli/ /həˈbɪtʃəli/

Occurring regularly or usually.

"Professor Franklein is habitually pessimistic."

spectrogramnoun

/ˈspɛktɹəˌɡɹæm/

A visual representation of the spectrum of a sound changing through time.

"The teacher used a spectrogram to show how the different frequencies in the student's singing voice changed over time. "

repetitiveadjective

/rɪˈpɛtətɪv/ /rəˈpɛtətɪv/

Happening many times in a similar way; containing repetition; repeating.

"The meeting was repetitive; the same points were discussed over and over again. "

subcarriernoun

/ˈsʌbˌkæriər/ /ˈsʌbˌkɛriər/

A separate signal carried on a main radio transmission, often carrying additional information such as voice or data.

"The radio station uses a subcarrier to transmit song lyrics and artist information alongside the music. "

upfieldadjective

/ˈʌpfiːld/

Describing an NMR resonance at a lower frequency to that of a reference signal

"The NMR spectrum showed the sample's hydrogen atoms had an upfield resonance compared to the standard reference. "

pulsateverb

/pʌlˈseɪt/ /ˈpʌl.seɪt/

To produce a recurring increase and decrease of some quantity.

"The flashing light on the emergency vehicle began to pulsate, growing brighter and then dimmer in a steady rhythm. "

twiceadverb

/twaɪs/

Two times.

"My sister practiced her piano piece twice before the recital. "

duty cyclesnoun

/ˈdjuːti ˈsaɪkl̩z/ /ˈduːti ˈsaɪkl̩z/

The ratio between the amount of time in which the clock's signal is high and the clock's period.

"The robot vacuum cleaner's effectiveness depends on its duty cycles, as longer periods of operation mean more dirt is collected. "

detuneverb

/diːˈtjuːn/ /deɪˈtjuːn/

To alter the capacitance of a circuit such that its resonant frequency differs from the incoming frequency.

"The technician had to detune the circuit to match the incoming radio signal's frequency. "

fundamentalsnoun

/ˌfʌndəˈmɛntəlz/ /ˌfʌndəˈmɛnəlz/

The lowest frequency of a periodic waveform.

"The fundamentals of a musical note determine its perceived pitch. "