| 摘要 |
A process for measuring the sampled amplitude of a seismic signal received by a sensing device after the said signal has travelled through a continuous medium, in which the content of an adding counter for each basic unit of time is compared in turn with the contents of each of a first series of memories, containing, in digital form, the instants of emission of a sequence of energy impulses, in which the sampled digital value of the signal supplied by the sensor is received in another series of memories, the elements of which are identified in relation to the time, and in which each sample is given a number of addresses determined by the instant of sampling and the various instants of prior emissions preceding the instant of sampling, with a period shorter than the maximum time taken for the mechanical waves to travel through the ground.
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