demodulation
Low FrequencyTechnical, Scientific
Definition
Meaning
The process of extracting an information-bearing signal from a modulated carrier wave.
In a broader technical sense, the act of recovering data from a transmitted, multiplexed, or processed signal. It can metaphorically refer to unpacking a complex, encoded message.
Linguistics
Semantic Notes
Demodulation is the inverse operation of modulation. It is a process, not an object. The related verb is 'demodulate.' While crucial in electronics, it is not a general-purpose word.
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning, spelling, or pronunciation. The word is identical in both standard varieties.
Connotations
Purely technical term with no special connotations in either variety.
Frequency
Equally low frequency and technical in both regions.
Vocabulary
Collocations
Grammar
Valency Patterns
The demodulation of [signal/carrier][Device/Circuit] performs demodulationDemodulation is required to recover [data/information]Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “None”
Usage
Context Usage
Business
Rare. Might appear in technical sales for telecommunications hardware.
Academic
Common in electrical engineering, physics, and telecommunications papers and textbooks.
Everyday
Virtually never used in non-technical conversation.
Technical
Core term in electronics, radio, and signal processing.
Examples
By Part of Speech
verb
British English
- The circuit will demodulate the incoming FM signal to retrieve the audio.
- We need to demodulate the carrier wave before analysing the data.
American English
- The software-defined radio can demodulate multiple signal types simultaneously.
- The receiver failed to properly demodulate the transmitted packet.
adverb
British English
- No common adverbial form exists.
American English
- No common adverbial form exists.
adjective
British English
- The demodulation stage is critical for signal integrity.
- We are testing new demodulation algorithms.
American English
- The demodulation circuit requires precise tuning.
- There was a significant error in the demodulation process.
Examples
By CEFR Level
- Demodulation is a technical word from science.
- In radio, demodulation is needed to hear the broadcast.
- The word 'demodulation' is not used in daily conversation.
- The engineer explained that demodulation extracts the original sound from the radio wave.
- Modern smartphones perform complex demodulation to receive cellular signals.
- Coherent demodulation requires a phase-locked local oscillator synchronized with the transmitter.
- The paper compares the bit-error-rate performance of various digital demodulation schemes in noisy channels.
Learning
Memory Aids
Mnemonic
Think of it as DE-constructing a MODULATED signal to get the original message. De-modulate = 'un-modulate.'
Conceptual Metaphor
Unlocking a box (the modulated carrier) to get the prize inside (the original signal).
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Direct translation 'демодуляция' is correct and standard. Avoid confusing with 'декодирование' (decoding), which can be a separate stage in a communication chain.
Common Mistakes
- Spelling: 'demodualtion' or 'demodultaion'. Confusing with 'modulation' (its opposite). Using it as a verb (correct verb is 'demodulate').
Practice
Quiz
Demodulation is the opposite of which process?
FAQ
Frequently Asked Questions
Not exactly. Demodulation recovers an analogue waveform or digital symbols from a modulated carrier. Decoding interprets those symbols into meaningful data (like text or an image). Demodulation often comes first.
It would sound unnatural and overly technical. In everyday language, you would use terms like 'figure out,' 'decipher,' or 'unpack' instead.
The main verb is 'to demodulate.' For example, 'The receiver demodulates the signal.'
It is fundamental to all modern communication (radio, TV, mobile phones, Wi-Fi). It allows many signals to share the same transmission medium (like the airwaves) by using different carrier frequencies, which are then separated by demodulation in the receiver.