modulation

modulation — noun

1. the deliberate adjustment of the pitch, loudness, or rhythm of your voice so tha

1.nounB2
Definition

the deliberate adjustment of the pitch, loudness, or rhythm of your voice so that what you say sounds more expressive or has a stronger emotional effect

Example

Joaquín used subtle modulation of his voice to keep the audience engaged throughout his speech.

collocation: subtle modulation of voice

Professional voice actors train for years to master the modulation needed for different animated characters.

Common collocations
  • voice modulation
  • vocal modulation
  • subtle modulation
  • dramatic modulation
  • modulation of tone
Synonyms
  • inflection

    focuses specifically on grammatical or tonal pitch changes in speech, often unconsciously made

  • intonation

    describes the overall rise and fall of the voice across a sentence rather than deliberate adjustments

  • pitch variation

    more technical and narrower; refers only to changes in highness or lowness of sound

Grammar Patterns

modulation + of + noun

subtle/voice modulation

Usage Note

Often used in the context of public speaking, acting, and broadcasting. Countable uses (e.g. 'a modulation') refer to a specific instance of voice change.

Common Mistakes

She used good modulations in her presentation' (overuse of plural).
She used good modulation in her presentation.
'modulation' is usually uncountable when referring to the general skill or technique.

2. a small but deliberate change made to a plan, system, process, or behaviour in o

2.nounB2
Definition

a small but deliberate change made to a plan, system, process, or behaviour in order to improve it or make it suitable for new conditions

Example

The chef made a subtle modulation to the recipe by reducing the salt and adding fresh herbs.

collocation: subtle modulation to

After staff feedback, the company introduced a modulation of its remote-work policy for better flexibility.

Common collocations
  • modulation of policy
  • modulation of parameters
  • slight modulation
  • careful modulation
Synonyms
  • adjustment

    broader and more common in everyday use; does not carry the nuance of fine-tuning

  • fine-tuning

    more informal and implies very precise, small-scale corrections

  • modification

    can refer to larger or more structural changes than 'modulation' typically suggests

Grammar Patterns

modulation + of + noun

a modulation in + noun

Usage Note

Countable when referring to a specific instance of change ('a modulation in policy'). Uncountable when referring to the general act of adjusting ('requires careful modulation').

Common Mistakes

We need a big modulation of the budget' (too large a change for this word).
We need a slight modulation of the budget.
'modulation' implies small, fine-tuned adjustments, not major overhauls.

3. the process by which a living organism adjusts the level or activity of a biolog

3.nounC1
Definition

the process by which a living organism adjusts the level or activity of a biological function, such as hormone secretion or immune response, in reaction to internal or external signals

Example

The modulation of hormone levels is essential for maintaining the body's natural sleep-wake rhythm.

collocation: modulation of hormone levels

Researchers are studying the modulation of immune responses to develop more effective treatments for autoimmune diseases.

Common collocations
  • immune modulation
  • hormonal modulation
  • modulation of gene expression
  • modulation of enzyme activity
  • pharmacological modulation
Synonyms
  • regulation

    more general and common; implies maintaining within set boundaries rather than actively adjusting

  • adjustment

    simpler and less technical; preferred in everyday contexts over 'modulation' for biological processes

Grammar Patterns

modulation + of + noun (biological process)

Usage Note

Almost exclusively used in formal scientific or medical writing. The countable form ('a modulation in immune activity') appears in research papers but is rare in general English.

Common Mistakes

The modulation of the coffee machine' (wrong domain).
The modulation of enzyme activity in the liver.
In this sense, 'modulation' is restricted to biological, chemical, or physical processes.

4. a deliberate move within a piece of music to a different tonal centre, often use

4.nounB2
Definition

a deliberate move within a piece of music to a different tonal centre, often used to create a fresh mood, heighten emotion, or add structural variety

Example

The sudden modulation from C major to A minor gave the song a beautifully melancholic feeling.

grammar pattern: modulation from [key] to [key]

Cyrus admired how the jazz pianist used a rapid modulation to surprise the audience mid-solo.

Common collocations
  • sudden modulation
  • dramatic modulation
  • modulation from C to G
  • modulation between keys
  • rapid modulation
Synonyms
  • key change

    the more common everyday term for non-musicians; 'modulation' is the formal music-theory term

  • tonal shift

    broader; can describe any change in tonal centre, not always a classical modulation

Grammar Patterns

modulation + from + key + to + key

a sudden modulation

Usage Note

Countable when referring to a specific key change ('a dramatic modulation from G to D'). Uncountable when referring to the general technique ('Modulation is a common device in classical sonatas').

Common Mistakes

The song has a modulation to a faster tempo' (confusing key change with tempo change).
The song has a modulation from C major to G major.
'modulation' in music refers specifically to key, not tempo or dynamics.

5. a method of transmitting information by altering a property — such as frequency,

5.nounC1
Definition

a method of transmitting information by altering a property — such as frequency, amplitude, or phase — of a carrier wave that carries the signal over a distance

Example

Frequency modulation provides better sound quality than amplitude modulation for music radio broadcasts.

collocation: frequency modulation / amplitude modulation

Modern Wi-Fi networks use sophisticated quadrature amplitude modulation to transmit data at very high speeds.

Common collocations
  • frequency modulation
  • amplitude modulation
  • phase modulation
  • signal modulation
  • pulse-code modulation
  • quadrature amplitude modulation
Synonyms
  • encoding

    broader; refers to any method of converting information into a signal, not specifically carrier-wave variation

Grammar Patterns

modulation + of + noun (signal/carrier wave)

frequency/amplitude modulation

Usage Note

Technical term used in engineering and telecommunications. Often appears as part of compound nouns: 'frequency modulation (FM)', 'amplitude modulation (AM)', 'phase modulation (PM)'. These compound forms are uncountable.

Common Mistakes

The radio uses sound modulations' (vague and non-technical).
The radio station broadcasts using frequency modulation.
Be precise about which type of modulation is being used.

Word family

  • modulate
    verbB2
  • modulator
    nounC1
  • modulatory
    adjectiveC2

Synonym discussion

Sense: noun/1

While 'modulation' (sense 1) refers to the deliberate adjustment of voice qualities for expressive effect, related words narrow the focus in different ways. 'Inflection' describes the minute pitch changes that happen naturally in speech as part of grammar and meaning — it is often unconscious, whereas modulation is intentional. 'Intonation' covers the overall rising and falling melody of a whole sentence, conveying attitude or sentence type (question vs. statement); it is broader in scope but less about controlled variation. 'Pitch variation' is the most technical and limited of the three, referring strictly to changes in the highness or lowness of sound without encompassing volume or rhythm. For example, a news anchor uses careful modulation to sound authoritative, the natural intonation of a speaker's regional dialect may sound musical to outsiders, and a singer practises pitch variation to hit notes accurately. 'Modulation' remains the best choice when the speaker is making a conscious effort to control multiple vocal dimensions.

inflectionintonation ↗pitch variation

Common collocations

Nouns

Adverbs

Phrases

  • modulation of [something]
  • modulation from [something] to [something]
  • a modulation in [something]

Prepositions

Etymology

LatinFrenchEnglish

Derived from Latin 'modulatio', meaning 'rhythmic measure' or 'singing in measure'. This came from 'modulari' (to measure, to sing rhythmically), which itself comes from 'modulus' (a small measure, standard), a diminutive of 'modus' (measure, manner, way). The word entered English in the late 14th century with the musical sense of 'singing or making melody'. By the 16th century it had broadened to refer to adapting or regulating anything according to a measure. The modern technical sense in electronics developed in the early 20th century alongside radio technology.