| 摘要 |
<p>The orthogonal transformer comprises a buffer memory (10) for storing an input time series data (X) temporarily, an orthogonal transformer means (20) for carrying out orthogonal transformation through multiplying each predetermined data read sequentially out of the buffer memory (10) by a predetermined twiddle factor, and a control means (30) for specifying data read out of the buffer memory (10) and giving 1 and r/2 I in magnitude of the real part and imaginary part as a value of the twiddle factor. I is a natural number including 0, and r is a natural number including 0 determined for each I and r </= 2 I. This orthogonal transformer is high in approximation and simple in hardware configuration and can be used in a signal analyzer simple in configuration.
<??>Furthermore, cepstrum information is obtainable with a simple hardware through analyzing a signal by the orthogonal transformer. </p> |
