high frequency

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high frequency

A violinist plays a high frequency note during an orchestra rehearsal.

Definition

Noun: 1. A pitch that is perceived as above other pitches: In acoustics and music, this refers to a sound wave with a rapid rate of vibration, resulting in a tone that is high in pitch. 2. 3 to 30 megahertz: In telecommunications and physics, this is a specific band of the radio frequency spectrum, often used for shortwave radio, amateur radio, and some types of radar.

Usage Examples
  • Noun (Acoustics/Music):
    • The dog whistle emits a high frequency that is inaudible to humans.
    • Sopranos can sing notes at a very high frequency.
  • Noun (Telecommunications):
    • The signal is broadcast on a high frequency band.
    • This transmitter operates at a high frequency of 15 megahertz.
Advanced Usage
  • Technical Context: In electronics, "high frequency" (often abbreviated as HF or RF for Radio Frequency) describes alternating current (AC) signals above a certain threshold, typically in the kHz to GHz range, where circuit behavior changes significantly (e.g., skin effect, radiation).
    • High-frequency trading uses powerful computers to execute orders at extremely fast speeds.
    • The antenna is designed for high-frequency applications.
Variants and Related Words
  • High-frequency (adjective): Used attributively to describe something that operates at or involves high frequencies.
    • A high-frequency sound wave.
    • High-frequency radio waves.
  • High-Fidelity (Hi-Fi): A related but distinct term referring to the high-quality reproduction of sound.
  • Ultrahigh Frequency (UHF): A specific band of radio frequencies higher than VHF (Very High Frequency).
  • Radio Frequency (RF): A general term for electromagnetic waves in the frequency range suitable for radio communication, which includes high frequencies.
Synonyms
  • High pitch (for the acoustic meaning).
  • Treble (in audio contexts, referring to the higher end of the audible frequency spectrum).
  • HF (the standard abbreviation for the 3-30 MHz radio band).
Antonyms
  • Low frequency.
  • Bass (in audio contexts).
high frequency

A violinist plays a high frequency note during an orchestra rehearsal.

Noun
  1. a pitch that is perceived as above other pitches
  2. 3 to 30 megahertz

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