US 5,452,360 A · Sound field control device and method for controlling a sound field

Abstract

A sound field control device for simulating a sound field of a small space such as a concert hall in a large space such as an open outdoor space and a large indoor space comprises loudspeakers for controlling a sound field disposed at or in the vicinity of positions in a real space corresponding to positions on a hypothetical peripheral plane which defines a hypothetical space in the real space, and a hypothetical reflected sound synthesizing section for synthesizing hypothetical reflected sounds on the basis of the sounds from a real sound source and supplying the synthesized hypothetical reflected sounds to the loudspeakers. The hypothetical reflected sounds are synthesized so that they will simulate sounds which are emanated from the real sound source and reflected from the hypothetical peripheral plane of the hypothetical space. A natural sound field in which one feels as if he was in an indoor concert hall can be obtained in the whole hypothetical space.

Claims19

Dependent claims

A sound field control device for simulating a hypothetical space in a real space having a real sound source comprising:

a loudspeaker for controlling a sound field disposed at or in the vicinity of a position in the real space corresponding to a position on a hypothetical peripheral plane which defines the hypothetical space;
and
a hypothetical reflected sound synthesizing section for synthesizing a hypothetical reflected sound on the basis of a sound from the real sound source and supplying the synthesized hypothetical reflected sound to the loudspeaker, the hypothetical reflected sound being synthesized so that the hypothetical reflected sound simulates a sound which is emanated from the real sound source and reflected at the position on the hypothetical peripheral plane of the hypothetical space;
there being a plurality of positions on the hypothetical peripheral plane at which or in the vicinity of which a plurality of the loudspeakers are disposed, the positions being determined with a closer interval toward the real sound source.

1 more element

A sound field control device for simulating a hypothetical space in a real space having a real sound source, comprising:

a plurality of loudspeakers being respectively discretely disposed at or in the vicinity of a position in the real space corresponding to a position on a hypothetical peripheral plane which defines the hypothetical space;
hypothetical reflected sound source synthesizing means for synthesizing a plurality of hypothetical reflected sound source signals, the plurality of hypothetical reflected sound source signals being different from each other and respectively corresponding to said plurality of loudspeakers;
and
supplying means for respectively supplying the plurality of hypothetical reflected sound source signals to said corresponding loudspeakers, wherein a hypothetical reflected sound simulates a sound which is emanated from the real sound source and reflected at the position on the hypothetical peripheral plane of the hypothetical space;
a plurality of simulation points at which said plurality of loudspeakers are respectively disposed being determined not to equally divide the hypothetical peripheral plane but with a closer interval toward the real sound source.

2 more elements

Dependencies are inferred from the claim text.

Sound field control device and method for controlling a sound field

Life of this patent

Sound field control device and method for controlling a sound field

Life of this patent

Abstract

Claims19