<p>A two-channel phase-amplitude stereo encoding and decoding scheme enabling flexible and spatially accurate interactive 3-D audio reproduction via standard audio-only two-channel transmission. The encoding scheme allows associating a 2-D or 3-D positional localization to each of a plurality of sound sources by use of frequency independent inter-channel phase and amplitude differences. The decoder is based on frequency-domain spatial analysis of 2-D or 3-D directional cues in a two-channel stereo signal and re-synthesis of these cues using any preferred spatialization technique, thereby allowing faithful reproduction of positional audio cues and reverberation or ambient cues over arbitrary multi-channel loudspeaker reproduction formats or over headphones, while preserving source separation despite the intermediate encoding over only two audio channels.</p>
申请公布号
WO2009046460(A2)
申请公布日期
2009.04.09
申请号
WO2008US79004
申请日期
2008.10.06
申请人
CREATIVE TECHNOLOGY LTD;JOT, JEAN-MARC;WALSH, MARTIN;STEIN, EDWARD;MERIMAA, JUHA OSKARI;GOODWIN, MICHAEL M.
发明人
JOT, JEAN-MARC;WALSH, MARTIN;STEIN, EDWARD;MERIMAA, JUHA OSKARI;GOODWIN, MICHAEL M.