BIB-VERSION:: CS-TR-v2.0
          ID:: STAN//CS-TR-72-307
       ENTRY:: October 16, 1995
ORGANIZATION:: Stanford University, Department of Computer Science
       TITLE:: Hadamard transform for speech wave analysis.
        TYPE:: Technical Report
      AUTHOR:: Tanaka, Hozumi
        DATE:: August 1972
       PAGES:: 34
    ABSTRACT:: Two methods of speech wave analysis using the Hadamard
               transform are discussed. The first method is a direct
               application of the Hadamard transform for speech waves. The
               reason this method yields poor results is discussed. The
               second method is the application of the Hadamard transform to
               a log-magnitude frequency spectrum. After the application of
               the Fourier transform the Hadamard transform is applied to
               detect a pitch period or to get a smoothed spectrum. This
               method shows some positive aspects of the Hadamard transform
               for the analysis of a speech wave with regard to the
               reduction of processing time required for smoothing, but at
               the cost of precision. A formant tracking program for voiced
               speech is implemented by using this method and an edge
               following technique used in scene analysis.
       NOTES:: [Adminitrivia V1/Prg/19951016]
         END:: STAN//CS-TR-72-307