Signal-to-noise ratio (SNR or S/N) is a measure used in science and engineering that compares the level of a desired signal to the level of background noise. SNR is defined as the ratio of signal power to the noise power, often expressed in decibels. A ratio higher than 1:1 (greater than 0 dB) indicates more signal than noise. Wikipedia
This is a scientific term that relates to how much background noise there is interfering with the data or information you are trying to receive. A simple way to think about this is having a conversation in a party. If the noise of the party is too loud, you can’t pick up the signal (what the other person is saying). There is a point at which the noise does not interfere and the signal/communication is easy to hear, then moving along the scale the noise can interfere a little or a lot.
With machines this ratio is easy to calculate. With humans it’s a lot harder. It isn’t always about the quality of the signal, it’s also about the the willingness of the receiver to receive the signal. Sometimes people are not ready to receive the signal no matter how clear it is. Sometimes people choose to listen to the noise. Sometimes the noise is in their own head, not just coming from outside.
We are currently living in a world where a large number of people pay attention to the noise and are missing the signal altogether. A world where the noise is intentionally being spread. A world where the signal is considered noise. But humans aren’t machines, and so the noise isn’t easily calibrated and removed.
Social media used to amplify the signal, now it amplifies the noise. News used to amplify the signal, now it constantly reports about the problem of the noise, thus highlighting the noise and bringing it to everyone’s attention… not always in a negative light… or putting the signal and the noise on an equal footing as if to say here are two equal signals to be weighed and considered. As a result, communities, families, and friendships are being torn apart as they argue about what is signal and what is noise.
I’m reminded of the ‘More Cowbell’ skit on Saturday Night Live.
https://vimeo.com/257364428
The noise is becoming too loud to receive the signal in any meaningful way. We need to simultaneously turn up the signal and turn down the noise. If not, we better get used to the cow bell.
