signal-to-noise ratio
Học thuậtThân thiện
Definition
- Noun:
- A measure comparing the strength of a desired signal to the strength of background noise: The "signal-to-noise ratio" is a quantitative measurement, often expressed in decibels (dB), that describes how much a useful signal (the information) stands out from unwanted noise (interference or random data).
Usage
- The term is used primarily in technical fields such as electronics, telecommunications, audio engineering, and data science to assess the clarity or quality of a transmission, recording, or dataset.
- A high signal-to-noise ratio indicates a clear, strong signal relative to the noise, which is desirable. A low ratio indicates the signal is obscured by noise.
Examples
- Noun:
- The new amplifier boasts an improved signal-to-noise ratio, resulting in cleaner audio.
- In data analysis, a low signal-to-noise ratio can make it difficult to identify meaningful patterns.
- Engineers worked to increase the signal-to-noise ratio of the radio transmission.
Advanced Usage
- Metaphorical Use: The term is often used metaphorically in non-technical contexts to describe the proportion of useful information to irrelevant or distracting information.
- The signal-to-noise ratio on that social media platform is very low; it's hard to find valuable discussions among all the spam.
Variants and Related Words
- SNR: A common initialism for "signal-to-noise ratio."
- Signal: The meaningful information or data intended for transmission or processing.
- Noise: Unwanted disturbances or random fluctuations that interfere with the signal.
- Noise floor: The measure of the background noise level in a system.
Synonyms
- Clarity metric (in a technical sense)
- SNR (as an abbreviation)
Related Phrases
- Signal-to-noise: Often used adjectivally in compound terms (e.g., "signal-to-noise performance").
- The device's signal-to-noise performance is critical for professional audio work.
Noun
- the ratio of signal intensity to noise intensity