Methods and devices for reproducing surround audio signals

摘要

Method and devices for providing surround audio signals are provided. Surround audio signals are received and are binaurally filtered by at least one filter unit. In some embodiments, the input surround audio signals are also processed by at least one equalizing unit. In those embodiments, the binaurally filtered signals and the equalized signals are combined to form output signals.

主权项

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.