Signal-to-noise ratio (SNR) is a measure of the relative levels of a desired signal and background noise. It is often expressed in decibels (dB), and a higher SNR indicates a better signal-to-noise ratio.
How do you explain signal-to-noise ratio?
Imagine you are listening to a speech in a noisy environment. The speech is the signal, and the noise is everything else you can hear, such as traffic, people talking, and the sound of the air conditioning. The SNR is a measure of how loud the speech is compared to the noise.
Why is signal-to-noise ratio important?
The SNR is important because it affects how well you can understand speech in a noisy environment. A higher SNR means that the speech signal is louder relative to the noise, so it is easier to understand. A lower SNR means that the noise is louder relative to the speech signal, so it is more difficult to understand.
What does low signal-to-noise ratio mean?
A low SNR means that the noise is louder relative to the speech signal. This makes it more difficult to understand speech, especially in noisy environments.
What is good signal-to-noise ratio?
The SNR that is considered “good” depends on the specific environment and the task. In general, a higher SNR is better. For example, a SNR of 10 dB is considered good for understanding speech in a quiet environment, while a SNR of 20 dB is considered good for understanding speech in a noisy environment.