demodulate
C2Technical/Specialist
Definition
Meaning
to extract or recover the original information-bearing signal from a modulated carrier wave.
The process of reversing modulation, converting a modulated radio frequency or other signal back into its original form, such as audio, data, or video.
Linguistics
Semantic Notes
A term specific to telecommunications, electronics, and signal processing. It implies a deliberate technical operation, not a natural or informal process.
Dialectal Variation
British vs American Usage
Differences
No significant lexical differences. Usage is identical across technical fields.
Connotations
Purely technical with no regional connotative differences.
Frequency
Equally low-frequency outside engineering/technical contexts in both regions.
Vocabulary
Collocations
Grammar
Valency Patterns
[Subject: device/circuit/software] demodulate [Object: signal/carrier/waveform][Subject: engineer/technician] demodulate [Object: signal] using [Instrument: device/method]Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “No common idioms”
Usage
Context Usage
Business
Rare, except in telecom/tech company contexts discussing product specifications.
Academic
Common in electrical engineering, physics, and telecommunications papers and textbooks.
Everyday
Extremely rare; would only be used by hobbyists (e.g., amateur radio).
Technical
Core term in RF engineering, signal processing, and communications design.
Examples
By Part of Speech
verb
British English
- The receiver must first demodulate the incoming RF signal.
- This software-defined radio can demodulate multiple protocols.
- We need to demodulate the signal before we can analyse the data.
American English
- The IC is designed to demodulate the QPSK waveform.
- You'll need a special chip to demodulate that broadcast standard.
- The first stage of the process is to demodulate the carrier.
adverb
British English
- The signal was processed demodulatedly by the dedicated unit.
- (Note: Highly unnatural; 'after demodulation' is preferred)
American English
- (Extremely rare to non-existent; technical language uses 'after demodulation' or 'post-demodulation')
adjective
British English
- The demodulated audio was surprisingly clear.
- Connect the probe to the demodulated output pin.
American English
- The demodulated signal is fed into the decoder.
- Check the voltage level on the demodulated side.
Examples
By CEFR Level
- The technician explained that the radio must demodulate the signal to produce sound.
- Demodulation is a key step in how your mobile phone receives data.
- Modern receivers digitally demodulate complex waveforms using sophisticated algorithms.
- The circuit's primary function is to demodulate the amplitude-modulated carrier and extract the baseband information.
Learning
Memory Aids
Mnemonic
Think: DE-modulate = take the message OFF the carrier, like getting off (de-) a bus.
Conceptual Metaphor
UNWRAPPING A PACKAGE (The carrier wave is the wrapping; demodulation is removing it to get the content).
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Not to be confused with 'демонтировать' (dismantle) or 'модулировать' (to modulate). The correct conceptual translation is 'демодулировать'.
Common Mistakes
- Using 'demodulate' for non-technical extraction (e.g., 'demodulate the meaning from the text').
- Confusing 'modulate' and 'demodulate'.
- Misspelling as 'demodulatte' or 'demodualte'.
Practice
Quiz
What is the direct technical antonym of 'demodulate'?
FAQ
Frequently Asked Questions
Primarily, but it applies to any modulated signal, including optical, digital data streams, and power line communications.
Yes, in contexts like software-defined radio (SDR) or digital signal processing where software performs the demodulation.
Demodulation. The device that performs it is a demodulator.
Yes, in very informal technical slang among engineers (e.g., 'check the demod output').