Audio Sounds around our lives.

In life we have many different sounds. In which the sounds emitted in daily activities but disturbing others are called "noise". There are cases for myself as "funny ringtones" but to others it is "loud sound" or "annoying sound". Are the sounds and sounds you make okay?
Each person's sound perception is different. The noises coming out of your life have many cases of disturbing others. Especially at night, the surroundings become quiet, so the small sounds feel louder than usual. Or on the day off, when the trainees gather crowdedly, party, talk happily, it is easy to tend to make loud noises. At times like that, you should pay attention not to just think for your own pleasure, but pay attention to your surroundings!