Sound field forming apparatus and method
First Claim
1. An apparatus, comprising:
- a central processing unit (CPU) configured to;
acquire position information indicative of one of a position of a first listener of a plurality of listeners or a position of a sound source;
determine a control point position based on;
a first distance of one of the first listener or the sound source from a speaker array, andthe acquired position information,wherein the speaker array surrounds the first listener;
convolve a filter coefficient, corresponding to the determined control point position, with a sound source signal;
generate a speaker drive signal based on the convolution of the filter coefficient with the sound source signal; and
control the speaker array to generate a specific sound field,wherein the specific sound field is generated based on the speaker drive signal.
1 Assignment
0 Petitions
Accused Products
Abstract
Provided are a sound field forming apparatus and a method that enhances the reproducibility of a wavefront at a listener position. The sound field forming apparatus has a position acquisition unit to acquire position information indicative of a position of a listener or a position of a sound source to be formed, a control point specification unit to specify a control point with a distance from a speaker array of the listener or the sound source on the basis of the position information, and a filter unit to generate a speaker drive signal for forming a predetermined sound field by the speaker array by convoluting a filter coefficient corresponding to the specified control point with a sound source signal.
18 Citations
10 Claims
-
1. An apparatus, comprising:
a central processing unit (CPU) configured to; acquire position information indicative of one of a position of a first listener of a plurality of listeners or a position of a sound source; determine a control point position based on; a first distance of one of the first listener or the sound source from a speaker array, and the acquired position information, wherein the speaker array surrounds the first listener; convolve a filter coefficient, corresponding to the determined control point position, with a sound source signal; generate a speaker drive signal based on the convolution of the filter coefficient with the sound source signal; and control the speaker array to generate a specific sound field, wherein the specific sound field is generated based on the speaker drive signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
9. A method, comprising:
-
acquiring position information indicative of one of a position of a listener or a position of a sound source; determining a control point position based on; a distance of one of the listener or the sound source from a speaker array, and the acquired position information, wherein the speaker array surrounds the listener; convoluting a filter coefficient, corresponding to the determined control point position, with a sound source signal; generating a speaker drive signal based on the convolution of the filter coefficient with the sound source signal; and controlling the speaker array to generate a specific sound field, wherein the specific sound field is generated based on the speaker drive signal.
-
-
10. A non-transitory computer-readable medium having stored thereon computer-executable instructions which, when executed by a computer, cause the computer to execute operations, the operations comprising:
-
acquiring position information indicative of one of a position of a listener or a position of a sound source; determining a control point position based on; a distance of one of the listener or the sound source from a speaker array, and the acquired position information, wherein the speaker array surrounds the listener; convoluting a filter coefficient, corresponding to the determined control point position, with a sound source signal; generating a speaker drive signal based on the convolution of the filter coefficient with the sound source signal; and controlling the speaker array to generate a specific sound field, wherein the specific sound field is generated based on the speaker drive signal.
-
Specification