band-pass filter
C2Highly Technical / Academic
Definition
Meaning
A circuit or device that allows signals within a specific range of frequencies to pass through while blocking those outside that range.
A technical filter, either electronic, optical, or acoustic, designed to transmit frequencies within a designated band and attenuate frequencies outside it. The concept can also be used metaphorically in fields like data analysis to describe selective processing.
Linguistics
Semantic Notes
A highly domain-specific term primarily used in electronics, signal processing, optics, and acoustics. It implies selectivity and is defined by its passband, the range of frequencies it transmits.
Dialectal Variation
British vs American Usage
Differences
No significant lexical or spelling differences. The hyphenated compound form 'band-pass' is standard in both.
Connotations
Purely technical and neutral in both varieties.
Frequency
Used with identical frequency in relevant technical fields in both the UK and US.
Vocabulary
Collocations
Grammar
Valency Patterns
The [noun] uses a band-pass filter to [verb]...A band-pass filter with a [adjective] bandwidth...To filter out noise, [subject] applied a band-pass filter.Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “None”
Usage
Context Usage
Business
Extremely rare; only in highly technical product specifications or R&D discussions in relevant industries (e.g., telecoms, audio equipment).
Academic
Common in engineering, physics, and computer science publications, theses, and lectures on signal processing.
Everyday
Virtually never used.
Technical
The primary domain of use. Found in circuit diagrams, datasheets, software for audio/image processing, and scientific papers.
Examples
By Part of Speech
verb
British English
- The software is designed to band-pass filter the raw audio signal.
- You need to band-pass filter that data to remove the interference.
American English
- We need to band-pass filter the input to isolate the carrier frequency.
- The circuit band-pass filters the signal before amplification.
adverb
British English
- The signal was processed band-pass. (Rare and highly technical)
American English
- The data was filtered band-pass to enhance the target range. (Rare and highly technical)
adjective
British English
- The band-pass filtering stage is crucial for clarity.
- We observed a band-pass filter effect in the experimental setup.
American English
- Adjust the band-pass filter settings on the equalizer.
- The band-pass filter characteristics are shown in the diagram.
Examples
By CEFR Level
- The radio uses a band-pass filter to select only one station.
- A simple band-pass filter can be made with resistors and capacitors.
- The engineer designed a fourth-order Chebyshev band-pass filter with a centre frequency of 10 kHz.
- By applying a digital band-pass filter, we successfully isolated the physiological signal from the artefact noise.
Learning
Memory Aids
Mnemonic
Think of a 'band' of musicians allowed to 'pass' through a security filter at a festival, while soloists (high frequencies) and drum corps (low frequencies) are stopped.
Conceptual Metaphor
A FREQUENCY GATEKEEPER or a SELECTIVE TUNNEL for signals.
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid a direct calque like '*полосно-проходящий фильтр*'. The standard Russian equivalent is 'полосовой фильтр'.
- Do not confuse with 'фильтр нижних/верхних частот' (low/high-pass filter).
Common Mistakes
- Misspelling as 'bandpass filter' (acceptable but less standard than hyphenated) or 'band pass filter'.
- Confusing its function with a 'high-pass' or 'low-pass' filter.
- Using it in a non-technical context where it would not be understood.
Practice
Quiz
What is the primary function of a band-pass filter?
FAQ
Frequently Asked Questions
The standard form is hyphenated: 'band-pass filter'. 'Bandpass filter' (as one word) is also common in technical literature, but the hyphenated form is often preferred in formal writing.
Primarily in electrical engineering, audio engineering, telecommunications, optics, acoustics, and any scientific field involving signal or data processing.
The direct functional opposite is a 'band-stop filter' or 'notch filter', which blocks a specific band of frequencies while allowing others to pass. 'High-pass' and 'low-pass' filters are also functional opposites for one side of the spectrum.
Yes, in technical jargon, it can be used as a phrasal verb (e.g., 'to band-pass a signal'), though it is less common than the noun form.