Patent ID: 8923536

Claim:
A method of localizing a sound image of an input signal to a spatial position, the method comprising: extracting, from a head related impulse response (HRIR) measured with respect to changes in a position of a sound source, first information indicating a reflection sound wave reflected by a body of a listener; extracting, from the HRIR, second information indicating a difference between sound pressures generated in two ears, respectively, when a direct sound wave generated from the position of the sound source arrives at the two ears, respectively, of the listener; extracting, from the HRIR, third information indicating a difference between times taken by the direct sound wave to arrive at the two ears, respectively; and localizing a sound image of an input signal to a spatial position by using the extracted information, wherein the extracting of the first information further comprises setting a plurality of at least one of gain and delay values corresponding to changes in the position of the sound source from the extracted first information, the extracting of the second information further comprises setting a gain value corresponding to changes in the position of the sound source from the extracted second information, and the extracting of third information further comprises setting a time delay value corresponding to changes in the position of the sound source from the extracted third information, and in the localizing of the sound image of the input signal to a spatial position, by using the plurality of at least one of gain and delay values set from the first information, the gain value set from the second information, and the time delay value set from the third information, the gain of the input signal is adjusted, and the delay of the input signal is processed, thereby localizing the sound image of the input signal to the spatial position.