**1. Introduction to acoustics**

Acoustics is a multidisciplinary field where many specializations cohere. The more the knowledge advances, the more the subfield growths and thus the belonging matter struggle. Acoustics comprehends a numerous profession such as architecture, engineering, physics, electronics, speech communication, mechanical engineering, medicine and speech communication, music and arts, and oceanography. Acoustics is a title, which today needs to be more complex as terminology, as all of the mentioned professions consider it as their own.

Acoustics is associated until a near date to the engineering. However, nowadays, many titles raised to identify the stipulation of the specific field better.

The soundscape is the acoustics that deals with the unconscious effects of sounds and the surrounding sound background having precise psychological effects.

Acoustical environment is the interior design application of the sound behavior within the interior and the different physical reactions on the human functions. Acoustical oceanography is the study of the underwater sound. Acoustical engineering, like science, belonged to the engineering; then by the advancement of information, it splits to mechanical waves, where the science of sound and vibration across the technology exists. Acoustical engineering, as well, has a direct relationship with the sound control through electrical devices.

Interior acoustical design cooperates some of the previous elucidated aspects, the soundscape, the acoustical environment, and the electrical sound systems, where all are integrated into the interior spaces based on their functions.
