Marketing noise is everywhere and in across industries. If your marketing blends in with the rest it will be perceived as noise being distinguishable from all the other marketing noise. This is not the purpose of your marketing money and invested time as your marketing needs to be noticed to get attention for your products or services.
In order to have your marketing stand out you first need to listen to the existing marketing noise. Then you can start designing and creating your marketing making sure your marketing message will be heard amongst all of the noise.
Forty years ago SLADE had a different take on noise:
How well does your marketing stands out from the rest of the noise?