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Image Analysis

System-for-determining-transfer-function

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System for determining transfer function

Details

Inventors: Sloane, Edwin A.;
Assignee: Time/Data Corporation (Santa Clara, CA)
Primary Examiner: Gruber; Felix D.
Assistant Examiner:
Attorney, Agent or Firm: Spensley, Horn, & Lubitz

A system for determining the transfer function of a specimen from an input or driving signal and an output or response signal. The driving signal and response signal are each divided into segments or frames of data, each frame of equal duration and a sum is formed for each frame of data. A time-domain to frequency-domain transform is taken of the two sums; the transfer function is then determined from the transformed data.

DETAILED DESCRIPTION A system is disclosed and described for determining the transfer function of a specimen, such as a complex structure, from an input or driving signal and from an output or response signal.
The input is divided into a plurality of periodic frames of data which are summed.
The output signal is likewise divided into a plurality of periodic frames of data which are summed.
A time-domain to frequency-domain transform, such as a Fourier transform, is taken of each of the sums.
From the transformed data the transfer function is then calculated.
In some embodiments averages and conjugates of the sums are used for determining the transfer function as a method for eliminating noise.

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