公开(公告)号：AT386999T

公开(公告)日：2008-03-15

申请号：AT02723802

申请日：2002-04-05

Applicant: IBM

Inventor： PITMAN MICHAEL ,  FITCH BLAKE ,  ABRAMS STEVEN ,  GERMAIN ROBERT

IPC: G10L15/10 ,  G06F17/30 ,  G10L15/02 ,  G10L19/018 ,  G10L19/02 ,  G10L25/51 ,  H04H1/00 ,  H04H60/58

Abstract: 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.