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Reference.org
Cone-shape distribution function
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<p>The cone-shape distribution function, also known as the Zhao–Atlas–Marks time-frequency distribution, (acronymized as the ZAM distribution or ZAMD), is one of the members of <a href="/facts/Cohen%2527s_class_distribution_function/zS9J0gHy">Cohen's class distribution function</a>. It was first proposed by Yunxin Zhao, Les E. Atlas, and <a href="/facts/Robert_J._Marks_II/sI73BN04">Robert J. Marks II</a> in 1990. The distribution's name stems from the twin cone shape of the distribution's kernel function on the t , τ {\displaystyle t,\tau } plane. The advantage of the cone kernel function is that it can completely remove the cross-term between two components having the same center frequency. Cross-term results from components with the same time center, however, cannot be completely removed by the cone-shaped kernel. </p>