Abstract：This paper discusses theoretically the problem of recovering.trueamplitude of sign-bit seismic recording.It gives respectively the error formulas in recovering true amplitude when probability density of random noise is in uniform distribution and in normal distribution.The examAles are given ef the recovery under both distributions.It is deemed that the amplitude recovered from wsign-bit seismic recording unceasingly approaches to the true amplitude of primary seismic recording with the increase of stack traces.Experiments have shown that the stack traces needed should be no less than 700.Also with same stacked traces better effect is achieved in the case of normal distribution cf noise than in uniform distribution case.
