Virtual sound source positioning

Details Virtual sound source positioning Virtual sound source positioning

2006-09-26

2006-09-26

Chin, Vivian (Department: 2615)

Electrical audio signal processing systems and devices

Binaural and stereophonic

Stereo speaker arrangement

C381S310000

Reexamination Certificate

active

07113610

ABSTRACT:
Indicating a spatial location of a virtual sound source by determining an output for each of one or more physical speakers as a function of an orientation of corresponding virtual speakers that track the position and orientation of a virtual listener relative to the virtual sound source in a virtual environment or game simulation. A vector distance between the virtual sound source and each virtual speaker is used to determine a volume level for each corresponding physical speaker. Each virtual speaker is specified at a fixed location on a unit sphere centered on the virtual listener, and the virtual sound source is normalized to a virtual position on the unit sphere. All computations are performed in Cartesian coordinates. Preferably, each virtual speaker vector distance is used in a nonlinear function to compute a volume attenuation factor for the corresponding physical speaker output.

REFERENCES:
patent: 4731848 (1988-03-01), Kendall et al.
patent: 5436975 (1995-07-01), Lowe et al.
patent: 5632005 (1997-05-01), Davis et al.
patent: 5943427 (1999-08-01), Massie et al.
patent: 5991385 (1999-11-01), Dunn et al.
patent: 5993318 (1999-11-01), Kousaki
patent: 6553121 (2003-04-01), Matsuo et al.
patent: 2002/0150257 (2002-10-01), Wilcock et al.
Cheng, Corey I. and Gregory H. Wakefield. 1999. Introduction to Head-Related Transfer Functions (HRTF'S): Representations of HRTF's in Time, Frequency, and Space. Paper presented at 107thAudio Engineering Society Convention, Sep. 24-27, Jacob K. Javits Center, NY, NY.
Chowning, John M. 1971. “The Simulation of Moving Sound Sources.” First PublishedJ. Audio Eng. Soc.19, 2-6.

Affiliated with

Also associated with

Rating

Virtual sound source positioning does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Virtual sound source positioning, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Virtual sound source positioning will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3553096