×

Speech-controlled electronic apparatus

  • US 4,573,187 A
  • Filed: 05/17/1982
  • Issued: 02/25/1986
  • Est. Priority Date: 07/24/1981
  • Status: Expired due to Fees
First Claim
Patent Images

1. A speech-controlled apparatus for performing a plurality of functions comprising:

  • electro-acoustic means for converting a word pronounced by the user of the apparatus, said word belonging to a predetermined vocabulary, into an analog signal;

    means for coding said signal including;

    a plurality of band-pass filter means for filtering said analog signal, each of said band-pass filter means having a distinct band-pass to provide a plurality of filtered analog signals,means for sampling each of said filtered analog signals,means for setting a threshold value, andmeans for comparing each sample of each filtered signal to said threshold and for allocating to each sample a first digital value if said sample has an amplitude which is greater than said threshold, and a second digital value in the opposite case, thereby forming from each analog filtered signal, strings of digital values, said strings forming together said coded digital signal;

    said apparatus further comprising;

    first processing means for sequentially detecting in each of said strings an isolated sample having said second digital value surrounded by two samples having said first digital value and for allocating to said isolated sample said first digital value, and means for then sequentially detecting in each of said strings an isolated sample having said first digital value and for allocating said second digital value to said isolated sample, whereby simplified strings of digital signals are formed, said simplified strings of digital signals forming together a coded digital signal representative of said pronounced word;

    means for memorizing as refernces in coded form all of the words of said predetermined vocabulary, each reference corresponding to an instruction for performing at least certain functions of the apparatus;

    means comparing said coded digital signal to at least a part of said references;

    means for selecting the compared reference which is closest to said coded digital signal;

    means for informing the user on the selected reference in response to said selected reference;

    means for transforming said selected reference into a control signal; and

    actuating means responsive to said control signal for performing said functions.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×