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Abstract: When the acoustics are applied to any of the buildings, it produces optimum contingencies for producing and listening to vocals, any instrumental sound or recorded song in any cinema. The planning of acoustical design and construction of the building mainly provides to eradicate the noise level below the permissible level. And due to a regular use of these various instruments like frequency modulations, sci-fi movies, heavy machineries, and vehicles that produces noise, it is essential for contemporary era to improve the acoustical conditions of the building by removing the acoustical defects. This paper will explore the typologies of noise and on the other hand it will showcase the behavior of audible sound, factors that affect the same and common acoustical defects with its remedial actions. A good architectural acoustic design requires an appropriate combination of absorptive, reflective, and diffusive surfaces. Hence, for the better acoustical upshot the construction and implication of sound osmotic and sound reflective materials should be carefully selected and placed. This will lead us to providing a better quality of audio-visual sensations to the viewers and listeners. Optimum planning for acoustics can reduce or completely pulling up by the root defects related to sound which is then so called as acoustical defects. Keywords: Acoustics, Acoustical Defects, Remedial Actions, Acoustical Materials.