<p>Audio is analyzed based on semitone intervals (402-406) and an average is calculated for each semitone channel (408-410). Running averages are calculated for each semitone channel (412) and averages are compared to see if they cross (414, 416). Crossing events are marked and utilized in combination with frequency spectrum data to determine a match between stored sound patterns and the input audio.</p>
申请公布号
EP1497935(B1)
申请公布日期
2008.02.20
申请号
EP20020723802
申请日期
2002.04.05
申请人
INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人
PITMAN, MICHAEL, C.;FITCH, BLAKE, G.;ABRAMS, STEVEN;GERMAIN, ROBERT, S.
