The phrase "new sounds" refers to sounds or noises that are unfamiliar or different from what we are used to hearing. It can also suggest the introduction of fresh and innovative music or auditory experiences. Full definition
Maybe you have a nice camera sitting around along with a sweet new sound system. (lemonade.com)
It is when we need extra security and comfort, especially at night where we are more likely to be sleeping somewhere strange with new sounds, smells, and on an unfamiliar surface. (attachmentparenting.org)
So, we had the opportunity and the challenge to invent new sounds for these aspects of the game. (mcvuk.com)