Translations:White convolutional model/5/en

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where s is the source wavelet, a is the absorption filter, m is the overall signal representing the multiples, and i is the response of the receiving instruments. These instruments include the geophones or hydrophones, the amplifiers, and the modulation equipment. Often the actual source wavelet, the instrumentation response, and certain near-surface effects all can be lumped together under the rubric of signature wavelet. The field wavelet w is necessarily causal, but it will not necessarily be minimum phase unless all its components are minimum phase.