公开(公告)号：DE69131689T2

公开(公告)日：2000-07-06

申请号：DE69131689

申请日：1991-05-14

Applicant: VCS IND INC D B A VOICE CONTRO

Inventor： HUNT ALAN ,  SCHALK THOMAS

IPC: G07C9/00 ,  G10L15/10 ,  G10L15/22 ,  G10L17/00 ,  H04M3/38 ,  G10L11/00 ,  H04M1/64 ,  H04M1/66

Abstract: A caller is prompted to enunciate (105) an alphanumeric phrase comprising a number of characters. Having reset (104) to zero a cumulative recognition distance register or its equivalent, each character is captured and analyzed (106) and a form of acoustic dissimilarity calculated (108) in relation to a previously stored and corresponding reference character of a reference alphanumeric string. The register is incremented by a quantified difference between the reference character and the captured character and then an assessment (112) is made to determine which of the reference alphanumeric strings has the lowest cumulative recognition distance implying that this was the alphanumeric phrase spoken by the caller. Robust phrase recognition is thus achieved by the exemplified methodology of Figure 6.

公开(公告)号：DE69131689D1

公开(公告)日：1999-11-11

申请号：DE69131689

申请日：1991-05-14

Applicant: VCS IND INC D B A VOICE CONTRO

Inventor： HUNT ALAN ,  SCHALK THOMAS

IPC: G07C9/00 ,  G10L15/10 ,  G10L15/22 ,  G10L17/00 ,  H04M3/38 ,  G10L5/06 ,  H04M1/64 ,  H04M1/66 ,  G10L3/00

Abstract: A caller is prompted to enunciate (105) an alphanumeric phrase comprising a number of characters. Having reset (104) to zero a cumulative recognition distance register or its equivalent, each character is captured and analyzed (106) and a form of acoustic dissimilarity calculated (108) in relation to a previously stored and corresponding reference character of a reference alphanumeric string. The register is incremented by a quantified difference between the reference character and the captured character and then an assessment (112) is made to determine which of the reference alphanumeric strings has the lowest cumulative recognition distance implying that this was the alphanumeric phrase spoken by the caller. Robust phrase recognition is thus achieved by the exemplified methodology of Figure 6.