Remarks on a limit value of the sound directional diffusion coefficient in rooms

✍ Scribed by Andrzej Kulowski

• Publisher: Elsevier Science
• Year: 1991
• Tongue: English
• Weight: 505 KB
• Volume: 32
• Category: Article
• ISSN: 0003-682X
• DOI: 10.1016/0003-682x(91)90051-f

✦ Synopsis

The analytical form of the Thiele's coefficient of sound field directional diffusion has been derived for the case of a diffuse field existing at the presence of the sound source. The derit'ed formula gives the largest value of the coefficient which can be expected in the room of the assumed acoustical absorption, at the given distance from the sound source. The value of the coefficient has also been estimated for real conditions by means of the sound field numerical model based on the ray method. It has been shown that at the non-uniform distribution of sound-absorbing materials in a room,for example in a full concert hall, sound field diffusion is significantly smaller than that resulting from the commonly assumed statistical nature of the sound field in rooms.