Sound positioner
First Claim
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1. An apparatus for playing back sounds with three-dimensional spatial position controllable in real time comprising:
- a preprocessing means for generating a plurality of binaurally preprocessed versions of an original sound, wherein each said binaurally preprocessed version is the result of convolving the original sound with a head related transfer function corresponding to a single predefined point on a sphere surrounding a listener;
a storage means for storing said binaurally preprocessed versions of said sound; and
a playback means comprising a means for mixing said binaurally preprocessed versions on playback to produce a left and right pair of binaural output signals conveying a desired three-dimensional spatial sound position and position interpreting means to translate said desired three-dimensional spatial sound position into control commands to control said mixing apparatus to produce said desired output signals during playback.
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Abstract
This invention relates to the presentation of sound where it is desirable for the listener to perceive one or more sounds as coming from specified three-dimensional spatial locations. In particular, this invention provides economical means of presenting three dimensional binaural audio signals with adjustment of spatial positioning parameters in real time.
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Citations
19 Claims
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1. An apparatus for playing back sounds with three-dimensional spatial position controllable in real time comprising:
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a preprocessing means for generating a plurality of binaurally preprocessed versions of an original sound, wherein each said binaurally preprocessed version is the result of convolving the original sound with a head related transfer function corresponding to a single predefined point on a sphere surrounding a listener; a storage means for storing said binaurally preprocessed versions of said sound; and a playback means comprising a means for mixing said binaurally preprocessed versions on playback to produce a left and right pair of binaural output signals conveying a desired three-dimensional spatial sound position and position interpreting means to translate said desired three-dimensional spatial sound position into control commands to control said mixing apparatus to produce said desired output signals during playback. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for playing back sounds with three-dimensional spatial position controllable in real time comprising the steps of:
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preprocessing an original sound to generate a plurality of binaurally preprocessed versions of said sound, wherein each said binaurally preprocessed version is the result of convolving the original sound with a head related transfer function corresponding to a single predefined point on a sphere surrounding a listener; storing said binaurally preprocessed versions of said original sound; interpreting and translating a desired three-dimensional spatial coordinate position into control commands; mixing said binaurally preprocessed versions of said original sound according to said control commands to produce a left and right pair of binaural output signals conveying said desired three-dimensional spatial coordinate position; and playing back said left and right pair of binaural output signals on a playback means. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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Specification