×

Speech recognition method and device

  • US 6,721,702 B2
  • Filed: 12/10/2001
  • Issued: 04/13/2004
  • Est. Priority Date: 06/10/1999
  • Status: Expired due to Term
First Claim
Patent Images

1. A method for interactive voice recognition of a word by a voice recognition system, which comprises the steps of:

  • performing a word recognition mode by the steps of;

    converting a spoken word into an electrical word voice signal;

    analyzing the electrical word voice signal for recognizing the spoken word front a vocabulary of predetermined words;

    performing the following steps if a definite assignment of the electrical word voice signal to a word from the vocabulary of predetermined words cannot be made;

    compiling a preselection of words from the vocabulary of predetermined words which have a sufficient probability of being the spoken word;

    determining for each word forming the preselection of words, at least one decisive letter which makes the word distinguishable from other words in the preselection of words;

    inquiring which of the decisive letters for the words of the preselection of words is appropriate during a spelling recognition mode;

    converting a spelling voice input into an assigned electrical spelling voice signal; and

    analyzing the assigned electrical spelling voice signal for recognizing the decisive letter.

View all claims
  • 9 Assignments
Timeline View
Assignment View
    ×
    ×