acoustic power
Definition
Noun: * The physical intensity of sound: A measure of the rate at which sound energy is emitted, transmitted, or received. It quantifies the power of a sound source, typically measured in watts.
Usage
- Acoustic power is a key parameter in audio engineering, noise control, and the design of transducers like speakers and microphones.
- It is distinct from perceived loudness, as it is an objective physical measurement rather than a subjective psychoacoustic experience.
- The term is often used in technical and scientific contexts to specify the output capability of sound-producing devices.
Examples
- The acoustic power output of the concert speakers was carefully calculated to cover the entire stadium.
- Regulations limit the maximum acoustic power that personal listening devices can generate to prevent hearing damage.
- Researchers measured the acoustic power of the whale's vocalizations to understand their communication range.
Advanced Usage
- Acoustic Power Level: Often expressed in decibels relative to a reference power (e.g., 1 picowatt), providing a logarithmic scale that is more practical for the wide range of powers encountered.
- The transducer's acoustic power level was reported as 120 dB re 1 μPa.
Variants and Related Words
- Sound Power: A direct synonym for acoustic power.
- Sound Intensity: Related but distinct; sound intensity is acoustic power per unit area (watts per square meter).
- Acoustic Energy: The total energy transmitted by sound waves, related to acoustic power over time (joules).
Synonyms
- Sound power
- Sound output (in technical contexts)
Antonyms
- Acoustic silence (the absence of sound power)
- Zero power output
Noun
-
the physical intensity of sound
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