low frequency
Definition
- Noun:
- A pitch perceived as lower than other pitches: In acoustics and music, "low frequency" refers to sound waves with a slower vibration rate, resulting in a deeper or bass tone.
- A range of radio waves: In physics and telecommunications, "low frequency" (often abbreviated as LF) specifically denotes the radio band from 30 to 300 kilohertz.
Usage Examples
- Noun:
- The subwoofer produces sounds at a very low frequency. (This describes a deep, bass audio tone.)
- Some marine navigation systems operate on low frequency. (This refers to the use of the specific radio wave band.)
Advanced Usage
- Technical Context: In scientific and engineering contexts, "low frequency" is a precise term contrasting with medium, high, and ultra-high frequencies. It often modifies other nouns.
- Low-frequency oscillation can affect the stability of the circuit.
- The study focused on low-frequency noise pollution.
Variants and Related Words
- Low-frequency (adjective): Used attributively to describe something that operates at or involves low frequencies.
- A low-frequency transmitter.
- LF (abbreviation): The standard abbreviation for the Low Frequency radio band.
- Infrasound (noun): Sound waves with frequencies below the lower limit of human audibility (typically below 20 Hz), an extreme type of low-frequency sound.
Synonyms
- Bass (tones): For auditory pitches.
- Long wave (in radio contexts, approximately): Although not perfectly synonymous, "long wave" radio broadcasting uses frequencies within the LF band.
Related Phrases
- Low-frequency response: A term in electronics and audio engineering describing how well a system reproduces low-frequency signals.
- This speaker has excellent low-frequency response.
- Extremely low frequency (ELF): A related but distinct band for frequencies below 300 Hz, used in specialized communication (e.g., with submarines).
Noun
-
a pitch that is perceived as below other pitches
-
30 to 300 kilohertz
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