| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a multichannel audio reproducer capable of correctly recognizing a sound source position regardless of a distance between the sound source and a listener. <P>SOLUTION: A multichannel audio reproducer comprises a localization sound source estimation part 1 estimating a localization sound source signal when a localization sound source exists in an input multichannel audio signal, a sound source signal separation part 2 separating the input multichannel audio signal into the localization sound source signal and a non-localization sound source signal, a sound source position parameter calculation part 3 calculating a sound source position parameter based on signal components composing the localization sound source, a sound source position determination part 101 determining whether a sound source position specified by the sound source position parameter is in an area close to a listener or in a distant area, a first reproduction signal generation part 102 generating a reproduction signal to control the sound source position when it is in the distant area, a second reproduction signal generation part 103 generating a reproduction signal to control the sound source position when it is in the close area, and a switch part 104 switching between the first reproduction signal generation part 102 and the second reproduction signal generation part 103. <P>COPYRIGHT: (C)2012,JPO&INPIT |
