Efficient head related transfer function filter generation
AssigneeConexant Systems, Inc.
InventorsPaul Chen, Harry Lau
Life of this patent
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Abstract
A method for generating a head related transfer function comprises downconverting each of a plurality of measured impulse responses from a first sampling frequency to a second sampling frequency and then converting each downconverted impulse responses to a set of head related transfer functions. Coordinate conversion can then be performed on each set of head related transfer functions. The converted sets of head related transfer functions are then averaged to generate one average head related transfer function. The average head related transfer function can be decimated to fit a filter engine of a target system.
Claims14
A method for generating a head related transfer function, comprising:
- downconverting each of a plurality of measured impulse responses from a first sampling frequency to a second sampling frequency;
- converting each downconverted impulse responses to a set of head related transfer functions;
- performing coordinate conversion on each set of head related transfer functions;
- averaging the converted sets of head related transfer functions to generate one average set of head related transfer functions;
- and
- decimating the average set of head related transfer functions to fit a filter engine of a target system.
A computer readable medium having stored thereon one or more sequences of instructions for causing one or more processors to perform steps for generating a head related transfer function, the steps comprising:
- downconverting each of a plurality of measured impulse responses from a first sampling frequency to a second sampling frequency;
- converting each downconverted impulse responses to a set of head related transfer functions;
- performing coordinate conversion on each set of head related transfer functions;
- averaging the converted sets of head related transfer functions to generate one average set of head related transfer functions;
- and
- decimating the average set of head related transfer functions to fit a filter engine of a target system.
Dependencies are inferred from the claim text.