Audio signal recognition computer
Recognition of speech or speech-like sounds
Speech-controlled electronic apparatus Patent #: 4573187
ApplicationNo. 433098 filed on 11/08/1989
US Classes:704/248, Endpoint detection704/234, Normalizing704/253Endpoint detection
ExaminersPrimary: Harkcom, Gary V.
Attorney, Agent or Firm
International ClassG10L 005/00
Foreign Application Priority Data1988-11-16 CN
AbstractA method and apparatus for real time speech recognition with and without speaker dependency which includes the following steps. Converting the speech signals into a series of primitive sound spectrum parameter frames; detecting the beginning and ending of speech according to the primitive sound spectrum parameter frame, to determine the sound spectrum parameter frame series; performing non-linear time domain normalization on the sound spectrum parameter frame series using sound stimuli, to obtain speech characteristic parameter frame series with predefined lengths on the time domain; performing amplitude quantization normalization on the speech characteristic parameter frames; comparing the speech characteristic parameter frame series with the reference samples, to determine the reference sample which most closely matches the speech characteristic parameter frame series; and determining the recognition result according to the most closely matched reference sample.