A hybrid transform method for analysis/synthesis of speech

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5 Scopus citations


In this paper, a hybrid transform method for analysis/synthesis and coding of speech signals is proposed. A finite number of Fourier functions is used to represent frame-by-frame the selective (narrow-band) components of speech. The broadband residual is characterized by a small number of Walsh functions. An iterative algorithm, to determine the frequency and sequency components in a systematic manner, is derived. This is employed for speech coding at 16 kbit/s and 9.6 kbit/s. The hybrid transform method produces natural sounding speech which is indistinguishable from the original at 16 kbit/s and highly intelligible at 9.6 kbit/s.

Original languageEnglish (US)
Pages (from-to)217-229
Number of pages13
JournalSignal Processing
Issue number2
StatePublished - Aug 1991


  • Fourier
  • Speech
  • Walsh
  • coding
  • transforms

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Software
  • Signal Processing
  • Computer Vision and Pattern Recognition
  • Electrical and Electronic Engineering


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