Acoustic Design Support Apparatus

• US 20100232610A1
• Filed: 05/20/2010
• Published: 09/16/2010
• Est. Priority Date: 07/19/2005
• Status: Active Grant

• Current Assignee: Yamaha Corporation
• Original Assignee: Yamaha Corporation
• Inventors: Matsumoto, Shuichi, Watanabe, Takayuki, MIYAZAKI, Hideo, Sakanashi, Hideki
• Granted Patent: US 8,290,605 B2
• Time in Patent Office: Days
• US Class Current: 381/59
• CPC Class Codes: H04S 7/301 Automatic calibration of stereophonic sound system, e.g. with test microphone
• CPC Class Codes: H04S 7/302 Electronic adaptation of stereophonic sound system to listener position or orientation H04S7/301 takes precedence
• CPC Class Codes: H04S 7/307 Frequency adjustment, e.g. tone control H04S7/301 takes precedence

Abstract

In an acoustic design support apparatus, a speaker selection supporter selects a desired speaker as a candidate for use in a given space based on shape information representing a shape of the space. A speaker mounting angle optimizer calculates an optimal mounting direction of the selected speaker by selecting a mounting direction pattern which minimizes a degree of variation among sound pressure levels at a plurality of positions on a sound receiving surface defined in the space. An acoustic parameter calculator calculates a variety of acoustic parameters at sound receiving points within the space based on both of the shape information of the space and the optimal mounting direction of the speaker.

Claims

1. An acoustic design support apparatus comprising:

a speaker selection supporter that selects a desired array speaker including a plurality of speaker units as a candidate for use in a given space based on shape information representing a shape of the space;

a speaker mounting angle optimizer that calculates an optimal mounting direction of each speaker unit of the selected array speaker by selecting a mounting direction pattern which minimizes a degree of variation among sound pressure levels at a plurality of positions on a sound receiving surface defined in the space; and

an acoustic parameter calculator that calculates a variety of acoustic parameters at sound receiving points within the space based on both of the shape information of the space and the optimal mounting direction of each speaker unit, wherein

the acoustic parameter calculator calculates the sound pressure level at each sound receiving point as one of a variety of acoustic parameters in a frequency domain through convolution operation of all of Fourier transformed time delay phase correction filter data, Fourier transformed distance attenuation correction filter data, Fourier transformed equalizer data, and impulse response data of a corresponding direction that is produced through Fast Fourier Transform of an impulse response of surroundings of the selected array speaker.