Three-dimensional acoustic panning device
View Patent ↗[Problems] To provide a three-dimensional acoustic panning device enabling a three-dimensional-panning of a sound source as a sound image panning. [Means for Solving the Problems] The three-dimensional acoustic panning device 1 includes a sound source acoustic signal acquiring means 11 for acquiring a sound source acoustic signal s(t) radiated from at least one sound source C, a panning information input means 12 for inputting an panning information I p to pan the sound source C, an sound image forming acoustic signal output means 13 for outputting sound image forming acoustic signals q(t) to form at least one sound image at the position where the sound source C is positioned, an arrangement information storage means 14 for storing an arrangement information I s of the sound image forming acoustic signal output means 13 , and a sound image forming acoustic signal generating means 15 for generating sound image forming acoustic signals q(t) using the sound source acoustic signals s(t), the panning information I p and the arrangement information I s .
1. A three-dimensional acoustic panning device comprising:
a sound source acoustic signal acquiring means for acquiring acoustic signals radiated from at least one sound source;
a sound image forming acoustic signal output means for outputting acoustic signals to form sound images;
an arrangement information storage means for storing an arrangement information of said sound image forming acoustic signal output means;
a panning information input means for inputting a panning information consisting of directions centering on the sound receiving point and distances between the sound receiving point and said sound source; and
a sound image forming acoustic signal generating means for generating sound image forming acoustic signals which form sound images at the positions determined by said directions and said distances in said panning information in response to the change of said panning information based on said sound source acoustic signals and said arrangement information, and outputting said sound image forming signal to said image forming acoustic signal output means.
2. The three-dimensional acoustic panning device set forth in claim 1 , wherein,
said panning information input means comprising a directional information input means for inputting at least one set of directional information concerning the direction of said sound sources viewed from a sound receiving point and a distance information input means for inputting at least one set of distance information concerning the distance between said sound receiving point and said sound sources.
3. The three-dimensional acoustic panning device set forth in claim 2 , wherein, said panning information input means having a panning information storage means for storing said panning information.
4. The three-dimensional acoustic panning device set forth in claim 1 wherein,
said sound image forming acoustic signal output means having a recording/editing means for recording and editing said sound image forming acoustic signal.
5. The three-dimensional acoustic panning device set forth in anyone of claims 1 - 4 , wherein,
said sound image forming acoustic signal generating means comprising a transforming means for Fourier transforming said sound source acoustic signal to a frequency region sound source acoustic signal,
a frequency region sound image forming acoustic signal generating means for generating a frequency region sound image forming acoustic signal using said frequency region sound source acoustic signal, said panning information, and said arrangement information, and
an inverse transforming means for inverse Fourier transforming said frequency region sound image forming acoustic signal to said sound image forming acoustic signal which is a time region signal.
6. The three-dimensional acoustic panning device set forth in claim 5 , wherein,
said frequency region sound image forming acoustic signal generating means generates said sound image forming acoustic signal which forms a sound image acoustic physical quantity vector at the sound receiving point equal to the sound source acoustic physical quantity vector which is an acoustic physical quantity vector at the sound receiving point formed by panning the sound sources, which radiate the sound source acoustic signals, based on the panning information.
7. The three-dimensional acoustic panning device set forth in claim 5 , wherein,
said frequency region sound image forming acoustic signal generating means forms a sound image acoustic physical quantity vector at the sound signal receiving area equal to a sound source acoustic physical quantity vector which is an acoustic physical quantity vector at the sound signal receiving area formed by panning the sound sources which radiate the sound source acoustic signals based on the panning information.
8. The three-dimensional acoustic panning device set forth in anyone of claims 1 - 4 , further comprising a mixing means for mixing the sound source acoustic signals acquired by said sound source acoustic signal acquiring means.