Patent ID: 9635484
Date: 2017-04-25
CPC Classifications: H04S

Claim:
1. Method for providing coloration reduced surround audio signals, comprising the steps of: receiving surround audio signals; and binaurally filtering the surround audio signals by at least one filter unit using a modified set of head-related transfer functions to obtain the coloration reduced surround audio signals, wherein a set of head-related transfer functions comprises for at least one given source angle a head-related transfer function for a left ear and a head-related transfer function for a right ear, and wherein a spectral envelope is obtained from a combination of the head-related transfer function for the left ear and the corresponding head-related transfer function for the right ear, and wherein the modified set of head-related transfer functions is generated from an initial set of head-related transfer functions by modifying at least a portion of the initial set of head-related transfer functions, the portion corresponding to a frequency range such that the associated spectral envelope of said portion becomes more flat and has a resulting dynamic range that is less than a dynamic range of the spectral envelope of said portion that is associated with the initial set of head-related transfer functions.