Apparatus and method of reproducing virtual sound of two channels based on listener's position

摘要

An apparatus and method of reproducing a virtual sound of two channels which adaptively reproduces a 2-channel stereo sound signal reproduced through a recording medium such as DVD, CD, or MP3 player etc., based on a listener's position. The method includes sensing a listener's position and recognizing distance and angle information about the listener's position, determining output gain values and delay values of two speakers based on the distance and angle information about the sensed listener's position and selecting localization filter coefficients in a predetermined table, and updating filter coefficients of a localization filter based on the selected localization filter coefficients and adjusting output levels and time delays of the two speakers from the determined gain values and delay values.

主权项

1. A method of reproducing a virtual sound by which a multi-channel audio signal is reproduced as 2-channel audio signals, the method comprising:
sensing a listener's position and recognizing distance and angle information about the listener's position; determining output gain values and delay values of two speakers based on the distance information about the sensed listener's position and determining a filter type index to select at least one localization filter coefficient set corresponding to the angle information; and generating the virtual sound of the 2-channel audio signals from the multi-channel audio signal based on a localization filter coefficient set corresponding to the filter type index; and adjusting levels and time delays of the 2-channel audio signals based on the determined gain values and delay values.