In a communication system, what does 'signal-to-noise ratio' (SNR) measure?
Correct Answer: Signal-to-noise ratio (SNR) measures the strength of the signal relative to the background noise.
- Step 1: Understand that a 'signal' is the information we want to send, like a voice or data.
- Step 2: Recognize that 'noise' is any unwanted interference that can distort or hide the signal, like static on a phone call.
- Step 3: Realize that 'signal-to-noise ratio' (SNR) compares the strength of the signal to the strength of the noise.
- Step 4: Know that a higher SNR means the signal is much stronger than the noise, which usually means better quality communication.
- Step 5: Conversely, a lower SNR means the noise is closer in strength to the signal, which can lead to poor communication quality.
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