trapez_c.mht

来自「常用的DSP算法集锦」· MHT 代码 · 共 29 行

MHT
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Date: Wed, 27 Sep 2006 22:43:48 +0800
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<BODY><PRE>/* trapez.c - trapezoidal wavetable: D1 rising, D2 steady */

double trapez(D, D1, D2, i)
int D, D1, D2, i;
{
       if (i &lt; D1)
              return i/(double) D1;
       else
            if (i &lt; D1+D2)
                 return 1;
            else
                 return (D - i)/(double) (D - D1 - D2);
}
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