Electrical audio signal processing systems and devices – Binaural and stereophonic – Stereo speaker arrangement
Reexamination Certificate
2007-06-12
2007-06-12
Chin, Vivian (Department: 2615)
Electrical audio signal processing systems and devices
Binaural and stereophonic
Stereo speaker arrangement
C381S018000, C381S022000, C381S023000
Reexamination Certificate
active
09806193
ABSTRACT:
This invention addresses sound recording and mixing methods for 3-D audio rendering of multiple sound sources over headphones or loudspeaker playback systems. Economical techniques are provided, whereby directional panning and mixing of sounds are performed in a multi-channel encoding format which preserves interaural time difference information and does not contain head-related spectral information. Decoders are provided for converting the multi-channel encoded signal into signals for playback over headphones or various loudspeaker arrangements. These decoders ensure faithful reproduction of directional auditory information at the eardrums of the listener and can be adapted to the number and geometrical layout of the loudspeakers and the individual characteristics of the listener. A particular multi-channel encoding format is disclosed, which, in addition to the above advantages, is associated with a practical microphone technique for producing 3-D audio recordings compliant with the decoders described.
REFERENCES:
patent: 4086433 (1978-04-01), Gerzon
patent: 5436975 (1995-07-01), Lowe et al.
patent: 5500900 (1996-03-01), Chen et al.
patent: 5521981 (1996-05-01), Gehring
patent: 5596644 (1997-01-01), Abel et al.
patent: 5757927 (1998-05-01), Gerzon et al.
patent: 5802180 (1998-09-01), Abel et al.
patent: 5809149 (1998-09-01), Cashion et al.
patent: 6259795 (2001-07-01), McGrath
patent: 6418226 (2002-07-01), Mukojima
patent: 6577736 (2003-06-01), Clemow
patent: 6628787 (2003-09-01), McGrath et al.
patent: 6990205 (2006-01-01), Chen
Jeffrey S. Bamford, et al., Ambisonic Sound for Us, Presented at the 99th Conv. Audio Eng. Soc. (preprint 4138).
John M. Chowning, The Simulation of Moving Sound Sources, J. Audio Eng. Soc. Jan. 1971, vol. 19, No. 1, pp. 2-6.
Michael J. Evans, et al., Spherical Harmonic Spectra of Head-Related Transfer Functions, Presented at the 103rd Conv. Audio Eng. Soc. (preprint 4571), Sept. 1997, New York.
Ken Farrar, Soundfield Microphone, Wireless World, Oct. 1979, pp. 48-50.
Ken Farrar, Soundfield Microphone—2, Wireless World, Nov. 1979, pp. 99-102.
Michael A. Gerzon, Ambisonics in Multichannel Broadcasting and Video, J. Audio Eng. Soc., vol. 33, No. 11, Nov. 1985, pp. 859-871.
Jean-Marc Jot, et al., A Comparative Study of 3-D Audio Encoding and Rendering Techniques, AES 16th Intl. Conf. on Spatial Sound Reproduction.
Jean-Marc Jot, et al., Digital Signal Processing Issues in the Context of Binaural and Transaural Stereophony, Presented at the 98th Conv. Audio Eng. Soc. (preprint 3980), Feb. 1995, Paris, France.
Doris J. Kistler, et al., A Model of Head-Related Transfer Functions Based on Principal Components Analysis and Minimum-Phase Reconstruction, J. Acoust. Soc. Am. vol. 91, No. 3, Mar. 1992, pp. 1637-1647.
M. Marolt, Proc. IEEE 1995 Workshop on Applications of Signal Processing to Audio and Acoustics, Oct. 15-18, New York.
Ville Pulkki, Virtual Sound Source Positioning Using Vector Base Amplitude Panning, J. Audio Eng. Soc., vol. 45, No. 6, Jun. 1997, pp. 456-466.
William L. Martens, Principal Components Analysis and Resynthesis of Spectral Cues to Perceived Direction, 1987 ICMC Proceedings, Aug. 1987, Illinois, pp. 274-281.
Chris Travis, Virtual Reality Perspective on Headphone Audio, Presented at 101st Conv. Audio Eng. Soc. (preprint 4354).
William G. Gardner, 3-D Audio Using Loudspeakers Submitted to the Program in Media Arts and Sciences, Sep. 1997.
Jot Jean-Marc
Wardle Scott
Chin Vivian
Creative Technology Ltd
Kurr Jason
Schwegman Lundberg Woessner & Kluth P.A.
LandOfFree
Method and apparatus for three-dimensional audio display does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for three-dimensional audio display, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for three-dimensional audio display will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3836113