high frequency
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).
Noun
-
a pitch that is perceived as above other pitches
-
3 to 30 megahertz
Khám phá thêm
Các từ liên quan
Từ đồng nghĩa
Từ trái nghĩa
Từ chứa "high frequency"
