Method and apparatus for speech identification
Broadcast signal recognition system and method
Method and apparatus for classifying audio signals Patent #: 4542525
ApplicationNo. 210932 filed on 06/24/1988
US Classes:704/236, Specialized equations or comparisons455/2.01, AUDIENCE SURVEY OR PROGRAM DISTRIBUTION USE ACCOUNTING708/5Correlation, convolution, or transformation
ExaminersPrimary: Kemeny, Emanuel S.
Attorney, Agent or Firm
International ClassesG10L 005/00
Foreign Application Priority Data1987-06-24 DE
AbstractAn arrangement for automatically recognizing signal sequences such as spe and/or music signals, particularly useful for statistical evaluation of the frequency of play of music titles, commercial advertising spots, or verbal materials, etc. One envelope signal is generated from each preset signal sequence (e.g., music title) and time segments of the envelope signals are stored. An envelope signal is also generated from a signal sequence that is to be examined. Time segments of the envelope signal of the signal sequence to be examined are continually compared with the stored segments of the envelope signals of the preset signal sequences. When a preset degree of concordance is exceeded, a recognition signal is generated.